The laser light of laser pointer is installed in the theater
DC transport through self-consistent to consider the Coulomb interaction of the current conservation of the gauge invariant transport theory. Green function of second-order perturbation expansion of the arbitrary frequency of the quantum pump theory successfully explained within the quantum dot at zero bias pump current effect, is the best quantitative calculations. SCI papers cited 170. By the Jiangsu Province scientific and technological progress second prize, third prize each time. Invited to speak at several international conferences on the invitation of the report or oral report. Comparison of the micro-plasma cladding and laser cladding. The Company for many years engaged in the practice of application of laser cladding and micro-plasma cladding, with some knowledge of and summary. Today issued a document exchange with the majority of my colleagues. The trainer can smoothly step into the next training stage with help of laser pointer .
Laser cladding is the most important feature of the heat concentrated, quick heating, cooling fast heat-affected zone, especially between the different materials melt characteristics can not be compared with other heat sources, it is also a special heating and cooling process in the casting region the organizational structure is also different from other cladding (spray ? Surfacing ? General welding, etc.) means, and can even produce amorphous organization, especially the pulsed laser is more obvious. This is the so-called laser cladding deformation without annealing. But I think this is just the macro from the workpiece as a whole, the microscopic analysis of the cladding layer and heat affected zone, you will see another scene, which I described at the back. The laser light of laser pointer is installed in the theater.
The laser cladding is the domestic use of two models; CO2 lasers, YAG lasers. The former is a continuous output, cladding machine generally above 3KW; YAG laser pulse output, generally around 600W. Equipment, end users is difficult to understand well, heavily dependent on the production side of the service, expensive purchase price, maintenance costs, high component prices, coupled with the device stability and tolerance with foreign and more common, there are gaps. Laser cladding machine is generally used in specific areas, the area of general industrial manufacturing, maintenance is difficult to cost-effective. Here will introduce the function of electronic pointer of laser pointer .
The first pre-treatment: laser cladding is generally just polished workpiece clean, degreasing, rust, and the fatigue layer is relatively simple. The powder feeding: CO2 laser power, usually argon powder feeding; YAG laser power, usually with natural off the powder.
Friday, November 30, 2012
Tuesday, November 27, 2012
What are the differences between red ray laser pointer and green ray laser pointer
What are the differences between red ray laser pointer and green ray laser pointer ?
The two works are the same. The models vary, transfer to different. The early production of laser printers use of the transfer corona discharge. When the toner image drum rotation and transfer the tangent to the location of the electrodes or transfer rubber rollers, a paper was sent to both, then added to the transfer electrode on the high-pressure start discharge paper to the drum at the same time, the underside of the printing paper to transfer high-voltage electric field, the toner image on the drum to attract to the print paper to complete the secondary transfer of the toner image. Transfer the discharge polarity of the electrode wire or transfer rubber rollers are the same, was negative. It is the 100mW bright laser pointer pen.
However, this negative voltage than the drum exposed areas brought negative high voltage, so that the printing paper to push the drum at the same time, also toner to maximize attracted to the print paper. But pay attention to the transfer of toner to fight that on paper, if the fight that is paper damp, poor insulation performance, it will affect the efficiency of toner transfer, hence the image defect character hollow chip of poor print quality. The difference between yellow ray laser pointer and blue ray laser pointer will be contained.
When the toner image transferred onto the print paper, the paper takes on a charge. In the process of printing paper transport, electric and friction may damage the structure of the toner image after the toner image transfer, coupled with the electrical device of a "get rid of , also known as "separation of teeth." Its role is to charge toner on the paper and adsorption and to eliminate the polarity to make it significantly neutral, physically attached to the print paper, in order to ensure the accuracy of fixing the toner image before. The process of elimination power is AC voltage, so as to achieve the best eliminate power and effect. Will print the adsorption of the toner image on paper, using pressurized hot melt method, melt the toner immersed in the paper, the formation of a fixed image of the process, known as "fixing". The table will introduce the difference between the blue ray laser pointer and green ray laser pointer .
Adsorption on paper, toner, is formed by the heat of the resin and toner mixing small particles when adsorption have the toner to the paper after the two higher gap without large metal drum caught, carbon The melted resin in the powder and the toner is tightly pressure attached to a piece of paper to form a permanent image, but also to complete the entire process of laser printing.
The two works are the same. The models vary, transfer to different. The early production of laser printers use of the transfer corona discharge. When the toner image drum rotation and transfer the tangent to the location of the electrodes or transfer rubber rollers, a paper was sent to both, then added to the transfer electrode on the high-pressure start discharge paper to the drum at the same time, the underside of the printing paper to transfer high-voltage electric field, the toner image on the drum to attract to the print paper to complete the secondary transfer of the toner image. Transfer the discharge polarity of the electrode wire or transfer rubber rollers are the same, was negative. It is the 100mW bright laser pointer pen.
However, this negative voltage than the drum exposed areas brought negative high voltage, so that the printing paper to push the drum at the same time, also toner to maximize attracted to the print paper. But pay attention to the transfer of toner to fight that on paper, if the fight that is paper damp, poor insulation performance, it will affect the efficiency of toner transfer, hence the image defect character hollow chip of poor print quality. The difference between yellow ray laser pointer and blue ray laser pointer will be contained.
When the toner image transferred onto the print paper, the paper takes on a charge. In the process of printing paper transport, electric and friction may damage the structure of the toner image after the toner image transfer, coupled with the electrical device of a "get rid of , also known as "separation of teeth." Its role is to charge toner on the paper and adsorption and to eliminate the polarity to make it significantly neutral, physically attached to the print paper, in order to ensure the accuracy of fixing the toner image before. The process of elimination power is AC voltage, so as to achieve the best eliminate power and effect. Will print the adsorption of the toner image on paper, using pressurized hot melt method, melt the toner immersed in the paper, the formation of a fixed image of the process, known as "fixing". The table will introduce the difference between the blue ray laser pointer and green ray laser pointer .
Adsorption on paper, toner, is formed by the heat of the resin and toner mixing small particles when adsorption have the toner to the paper after the two higher gap without large metal drum caught, carbon The melted resin in the powder and the toner is tightly pressure attached to a piece of paper to form a permanent image, but also to complete the entire process of laser printing.
The different powers of laser pointer are needed
Dry the camera's film, however, the preservation of the environment require a higher temperature of 35 ° C, relative humidity 60% to save about half a year; the temperature at 30 cC, relative humidity 60% to save about five years, and not with acid, alkali and Organic solvent exposure, we must avoid a long period of illumination. laser pointer can meet the needs of the customer.
Dry laser camera with DICOM3.0 to interface to connect multiple images through the PACS network equipment, and the sharing of resources. When multiple devices at the same time came the image signal can be pre-set their priorities, which device the film takes precedence over print. The camera can also be printed image to be stored, if necessary, can be directly selected in the camera out of print without the need to re-take pictures. Based on dry laser cameras for all to see these benefits, but also with the development of computer technology, its spatial resolution and gray scale grade higher and higher, faster and faster print speed, imaging results fully comparable with the wet laser imager, Therefore, more and more hospitals are recognized. The different powers of laser pointer are needed.
The laser camera card how to do. Card laser camera, generally the fault tips: Film Jam,. The cause of the card. Such as: film input tray can not send the piece drive shaft axis ask the friction force does not match the sensor failure, a sudden power outage. Therefore, require careful analysis, to accurately determine the card position, the right medicine, clear the film was stuck. We Tianjian medical bought in early 2004 to customers of Konica company Drypro752 medical dry laser printer, and two analog ports are connected to the out-patient radiology and ward radiology, a digital port connected to the hospital local area network has been run for nearly a year, the cumulative print film in CR 23 000, a good run. Whether the power of laser pointer can meet the use requirements of the customer.Guide shaft transmission mounted on a dedicated print drum, the drum immediately go to the print position, the laser Jian instruction in accordance with the computer and the matrix, the image pixel unit PIX-EL gray value digital truss descendant of the laser camera memory direct control of f for each pixel unit of the laser exposure time, Ti weak change. The intensity of the laser beam can be controlled by the digital signal by the regulator adjustment regulator.Then, the image data from digital into analog signals. When the laser generator is working properly, the image analog signal to control the laser modulator to change the brightness of the laser beam, laser beam transmission through the lens focus and the mirror (10) to the film. The gray scale adjustment technology uses two initial temperature of the hair color (capsule wall carbon particles (Tg), as well as the micro-capsules of different sizes to optimize the combination), get a good gray scale characteristics.
Dry laser camera with DICOM3.0 to interface to connect multiple images through the PACS network equipment, and the sharing of resources. When multiple devices at the same time came the image signal can be pre-set their priorities, which device the film takes precedence over print. The camera can also be printed image to be stored, if necessary, can be directly selected in the camera out of print without the need to re-take pictures. Based on dry laser cameras for all to see these benefits, but also with the development of computer technology, its spatial resolution and gray scale grade higher and higher, faster and faster print speed, imaging results fully comparable with the wet laser imager, Therefore, more and more hospitals are recognized. The different powers of laser pointer are needed.
The laser camera card how to do. Card laser camera, generally the fault tips: Film Jam,. The cause of the card. Such as: film input tray can not send the piece drive shaft axis ask the friction force does not match the sensor failure, a sudden power outage. Therefore, require careful analysis, to accurately determine the card position, the right medicine, clear the film was stuck. We Tianjian medical bought in early 2004 to customers of Konica company Drypro752 medical dry laser printer, and two analog ports are connected to the out-patient radiology and ward radiology, a digital port connected to the hospital local area network has been run for nearly a year, the cumulative print film in CR 23 000, a good run. Whether the power of laser pointer can meet the use requirements of the customer.Guide shaft transmission mounted on a dedicated print drum, the drum immediately go to the print position, the laser Jian instruction in accordance with the computer and the matrix, the image pixel unit PIX-EL gray value digital truss descendant of the laser camera memory direct control of f for each pixel unit of the laser exposure time, Ti weak change. The intensity of the laser beam can be controlled by the digital signal by the regulator adjustment regulator.Then, the image data from digital into analog signals. When the laser generator is working properly, the image analog signal to control the laser modulator to change the brightness of the laser beam, laser beam transmission through the lens focus and the mirror (10) to the film. The gray scale adjustment technology uses two initial temperature of the hair color (capsule wall carbon particles (Tg), as well as the micro-capsules of different sizes to optimize the combination), get a good gray scale characteristics.
Sunday, November 25, 2012
The cost performance of the blue laser pointer is high
The cost performance of the blue laser pointer is high
Set the target distance R, the laser pulse to and from the elapsed time t, and the speed of light propagation in the air for c, then ranging the formula as follows: R = ct / 2. The actual pulse laser rangefinder is the use of the clock crystal oscillator and pulse up and measurement time interval of t. Crystal oscillator clock is used to generate a fixed frequency electrical pulse oscillation (T = 1 / f) the role of the pulse counter to count the number of electrical pulses generated in the crystal. Such as in the light and from the time t between the rangefinder and the target number of pulses N, the energy band measured distance R ==. System components and overall demonstration program. Pulsed laser ranging system consists of three parts: the laser transmitter, laser receiver part and the signal processing section. The development of the industry of laser pointer should be performed.
The output signal is provided to the follow-up circuit. The high voltage generating circuit. In the drive circuit of the APD, you need the 160V high voltage bias, the need to use a 5V supply voltage rise to 160V high-voltage generating circuit in the system. The circuit 555 oscillator consisting of a square wave generator to produce a certain duty cycle square wave to control the switching transistor on and off. Voltage of the circuit generated by the power supply voltage, temperature and other factors, therefore in order to produce high-pressure stability, and high-pressure adjustable within a certain range, high-voltage generating circuit in a feedback loop, as shown: front The amplifier circuit. Ranging when, due to the measured distance near and far. Function and performance of laser pointer is closer to the customer’s requirement.
Laser camera composition. Wet Laser Camera. The structure of the wet laser imager is mainly composed of six parts: switching power supply, Image Control System (IMS), grasping piece institution control system (PCB), laser printing control system, the film transmission control system (MCS), automatic washing unit. Various parts of the main features are as follows: switching power supply: compatible laser camera unit power. Image Control system: responsible for finishing the host of the image signal, the need for sub-grid layout; the same time, adjust the image contrast and density. Controlled by a computer image control system is the core of the laser camera.
Set the target distance R, the laser pulse to and from the elapsed time t, and the speed of light propagation in the air for c, then ranging the formula as follows: R = ct / 2. The actual pulse laser rangefinder is the use of the clock crystal oscillator and pulse up and measurement time interval of t. Crystal oscillator clock is used to generate a fixed frequency electrical pulse oscillation (T = 1 / f) the role of the pulse counter to count the number of electrical pulses generated in the crystal. Such as in the light and from the time t between the rangefinder and the target number of pulses N, the energy band measured distance R ==. System components and overall demonstration program. Pulsed laser ranging system consists of three parts: the laser transmitter, laser receiver part and the signal processing section. The development of the industry of laser pointer should be performed.
The output signal is provided to the follow-up circuit. The high voltage generating circuit. In the drive circuit of the APD, you need the 160V high voltage bias, the need to use a 5V supply voltage rise to 160V high-voltage generating circuit in the system. The circuit 555 oscillator consisting of a square wave generator to produce a certain duty cycle square wave to control the switching transistor on and off. Voltage of the circuit generated by the power supply voltage, temperature and other factors, therefore in order to produce high-pressure stability, and high-pressure adjustable within a certain range, high-voltage generating circuit in a feedback loop, as shown: front The amplifier circuit. Ranging when, due to the measured distance near and far. Function and performance of laser pointer is closer to the customer’s requirement.
Laser camera composition. Wet Laser Camera. The structure of the wet laser imager is mainly composed of six parts: switching power supply, Image Control System (IMS), grasping piece institution control system (PCB), laser printing control system, the film transmission control system (MCS), automatic washing unit. Various parts of the main features are as follows: switching power supply: compatible laser camera unit power. Image Control system: responsible for finishing the host of the image signal, the need for sub-grid layout; the same time, adjust the image contrast and density. Controlled by a computer image control system is the core of the laser camera.
Friday, November 23, 2012
The customer still asks for more discount for this kind of laser pointers
The customer still asks for more discount for this kind of laser pointers .
Low-intensity laser-induced biological effects gradually increased from 3 days to 10-15 days to reach the maximum! Persist day and night best laser cooling (laser cooling) the interaction of atoms with laser and slow atomic motion in order to obtain ultra-low temperature atoms of high-tech. The main purpose of the early important technology is to accurately measure the various atomic parameters for high-resolution ultra-high-precision laser spectroscopy and quantum frequency standards, but later became achieve atomic Bose - Einstein condensation of the key experimental methods. The retail price of laser pointers will be much more expensive.The small size of the role of laser weapons, but the key parts of the damage on the target, the target can cause devastating damage. This earth-shattering nuclear weapons than are the two styles completely. Different power densities, different output waveform, different wavelengths of laser interaction with different target materials, it will produce different effects of anti destroyed. The coupon of laser pointers can save much money for the customer.Antenna is the optical telescope; receiver using various forms of optical detectors, such as photomultiplier tubes, semiconductor photodiodes, avalanche photodiodes, infrared and visible multi-detector parts. Laser radar using pulsed or continuous wave two kinds of work, the direct detection method of detection and sub-heterodyne detection. The use of laser weapons is a directional laser beam emission target or direct damage to the failure of directed energy weapons. According to operational use of different laser weapons can be divided into tactical and strategic laser weapons, laser weapons into two categories. Weapon system consists of lasers and tracking, aiming and firing devices, components, lasers are now commonly used chemical lasers, solid-state lasers, CO2 lasers. Laser weapons have attack speed, to flexible, enabling precision strike, immune to electromagnetic interference, etc., but there are also vulnerable to weather and environmental impact of weaknesses. The laser pointers for lecturing has some specific requirements.The success of the optical capture technology by the University of California nanotube experts, physicist Alex ? Ze Teer praise, he said, because there is not a reliable technique to manipulate a large number of nanotubes, which kinds of new optical capture technology has the potential for industrial. Laser applications in medicine is divided into three categories: Laser Life Science, laser diagnostics, laser treatment, laser treatment is divided into: laser surgery, laser bio-stimulation of the weak non-surgical laser treatment and photodynamic therapy.In recent years some of the new laser, high-energy ultra-pulsed CO2 laser, Erbium laser for wrinkles, skin resurfacing, treatment of snoring, teeth whitening,and achieved good effect, for the laser surgery to open up more and wider area. Laser surgery can not be compared with the advantages of traditional surgery.
Low-intensity laser-induced biological effects gradually increased from 3 days to 10-15 days to reach the maximum! Persist day and night best laser cooling (laser cooling) the interaction of atoms with laser and slow atomic motion in order to obtain ultra-low temperature atoms of high-tech. The main purpose of the early important technology is to accurately measure the various atomic parameters for high-resolution ultra-high-precision laser spectroscopy and quantum frequency standards, but later became achieve atomic Bose - Einstein condensation of the key experimental methods. The retail price of laser pointers will be much more expensive.The small size of the role of laser weapons, but the key parts of the damage on the target, the target can cause devastating damage. This earth-shattering nuclear weapons than are the two styles completely. Different power densities, different output waveform, different wavelengths of laser interaction with different target materials, it will produce different effects of anti destroyed. The coupon of laser pointers can save much money for the customer.Antenna is the optical telescope; receiver using various forms of optical detectors, such as photomultiplier tubes, semiconductor photodiodes, avalanche photodiodes, infrared and visible multi-detector parts. Laser radar using pulsed or continuous wave two kinds of work, the direct detection method of detection and sub-heterodyne detection. The use of laser weapons is a directional laser beam emission target or direct damage to the failure of directed energy weapons. According to operational use of different laser weapons can be divided into tactical and strategic laser weapons, laser weapons into two categories. Weapon system consists of lasers and tracking, aiming and firing devices, components, lasers are now commonly used chemical lasers, solid-state lasers, CO2 lasers. Laser weapons have attack speed, to flexible, enabling precision strike, immune to electromagnetic interference, etc., but there are also vulnerable to weather and environmental impact of weaknesses. The laser pointers for lecturing has some specific requirements.The success of the optical capture technology by the University of California nanotube experts, physicist Alex ? Ze Teer praise, he said, because there is not a reliable technique to manipulate a large number of nanotubes, which kinds of new optical capture technology has the potential for industrial. Laser applications in medicine is divided into three categories: Laser Life Science, laser diagnostics, laser treatment, laser treatment is divided into: laser surgery, laser bio-stimulation of the weak non-surgical laser treatment and photodynamic therapy.In recent years some of the new laser, high-energy ultra-pulsed CO2 laser, Erbium laser for wrinkles, skin resurfacing, treatment of snoring, teeth whitening,and achieved good effect, for the laser surgery to open up more and wider area. Laser surgery can not be compared with the advantages of traditional surgery.
Thursday, November 22, 2012
Each laser pointer requires 2 pieces of AAA batteries
Each laser pointer requires 2 pieces of AAA batteries.
The following is a commonly used pre-distortion compensation circuit block diagram: the RF signal first passes through the main part of the separator 1, the energy into the main channel. A small part of the Vice-channel, then Vice-channel separator 2 divided equally into a vice channel 2. Vice-channel nonlinear generator specifically produce distortion products of the second order, and oblique; Vice-channel non-linear generator to produce specialized third-order and odd order distortion products. Vice channel nonlinear distortion inherent nonlinear distortion of the laser with the same amplitude, phase contrast, the two vice-channel signals through the combiner and two synthetic all the way, and finally the main channel after the delay signal is mixed to become all the way with the distortion of the RF broadband signal with its modulated DFB lasers, you can make the distortion is greatly reduced. It is the waterproofing green ray laser pointer with LED indicators and compasses.
More than 550MHZ band, join the digital signal will cause the deterioration of the indicators. The optical transmitter selection should be the product of the RF excitation circuit and the test conditions of emphasis on the reference price level to make the choice of science. Part VI. The core of the optical transmitter control functions. Semiconductor lasers are very sensitive to temperature change, so the stability of the laser light output is an important issue; destabilizing temperature change and the aging of the device to the laser is mainly as follows: 1, the laser threshold current with temperature exponentially changes in the law, and increase with the aging of the device so that the output optical power change. The customer can require some special customized service of the focusable performance of laser pointer .
With increasing temperature and device aging, reduce the electro-optical conversion efficiency of the laser, so the output changes, the other with increasing temperature, the peak position of the semiconductor laser emission wavelength towards the long wave. In summary, a single laser is unable to work, the role of the core of the optical transmitter control circuit is to eliminate the influence of temperature and device aging, so that the laser always work in the best working condition. The core of the optical transmitter control circuit mainly in two ways: automatic temperature control (ATC) and automatic power control (APC), in view of the two parts of the circuit is quite complex, high technology content, if there are problems repaired by the user is unlikely .
The following is a commonly used pre-distortion compensation circuit block diagram: the RF signal first passes through the main part of the separator 1, the energy into the main channel. A small part of the Vice-channel, then Vice-channel separator 2 divided equally into a vice channel 2. Vice-channel nonlinear generator specifically produce distortion products of the second order, and oblique; Vice-channel non-linear generator to produce specialized third-order and odd order distortion products. Vice channel nonlinear distortion inherent nonlinear distortion of the laser with the same amplitude, phase contrast, the two vice-channel signals through the combiner and two synthetic all the way, and finally the main channel after the delay signal is mixed to become all the way with the distortion of the RF broadband signal with its modulated DFB lasers, you can make the distortion is greatly reduced. It is the waterproofing green ray laser pointer with LED indicators and compasses.
More than 550MHZ band, join the digital signal will cause the deterioration of the indicators. The optical transmitter selection should be the product of the RF excitation circuit and the test conditions of emphasis on the reference price level to make the choice of science. Part VI. The core of the optical transmitter control functions. Semiconductor lasers are very sensitive to temperature change, so the stability of the laser light output is an important issue; destabilizing temperature change and the aging of the device to the laser is mainly as follows: 1, the laser threshold current with temperature exponentially changes in the law, and increase with the aging of the device so that the output optical power change. The customer can require some special customized service of the focusable performance of laser pointer .
With increasing temperature and device aging, reduce the electro-optical conversion efficiency of the laser, so the output changes, the other with increasing temperature, the peak position of the semiconductor laser emission wavelength towards the long wave. In summary, a single laser is unable to work, the role of the core of the optical transmitter control circuit is to eliminate the influence of temperature and device aging, so that the laser always work in the best working condition. The core of the optical transmitter control circuit mainly in two ways: automatic temperature control (ATC) and automatic power control (APC), in view of the two parts of the circuit is quite complex, high technology content, if there are problems repaired by the user is unlikely .
Wednesday, November 21, 2012
Welcome to order laser pointer with USB flash disks
In addition, laser pointer support the browsing of various documents, websites, and e-books and so on.
Polarizing beam splitter. Photodetachment is the reflection of the emitted light from the LD from the CD, first, so that the reflected light back to the LD laser cavity, resorted to shooting the laser does not produce noise, the second is reflected back with the information reflected laser The beam can have the smallest loss, first make the Q-surface filter out the ingredients other than the incident light A is P linear polarizer, make it a pure P linear polarizer, must also be Q face of P linear polarizer through the S linear polarized total internal reflection. Matter lens design, it is necessary depends on the thickness of the disc if the thickness of the disc are inconsistent with the design value. Welcome to order laser pointer with USB flash disks.
Will produce a spherical aberration, so that the aggregation properties deteriorate, which is why for the disc thickness 0.6mm DVD on the grounds of the material lens can not read the CD-ROM disc thickness 1.2mm signal. DVDbook provisions NA = 0.6, the general radius R = 2mm. fobj = 2R/2NA = 3.33 (mm). Generally read-only using the power of small injection aspheric optical resin can be recorded by the power of a larger, usually with multiple sets of optical glass lens combination, the aberration of the imaging department ministries goods must be strictly controlled the FES focus servo error signal to obtain a variety of ways, such as non-point like the difference method, blade method, dual-blade method, only the relatively simple optical system, a wider application of non-point aberration France.The characteristics of the laser. Because the laser is light amplification by stimulated emission of radiation-based light-emitting phenomenon, and thus it has many distinctive features compared with ordinary light source based on spontaneous emission.
Isolated from PBS containing information of the reflected light, with the exception of the part into the servo control system, the majority of the signal system, into electrical signals by PD, preamplifier, the RF signal. The design of the optical system of the optical head. DVD optical head including material lens drive system ACT (ACTUATOR) and the Department of Optics, rem lens drive system has two functions, is issued from the semiconductor laser laser focus on the information of the disc surface, and the other beam on the track and follow the track , because the focus is for the disc surface vibration to the error of less than 1μm to follow, the design focus servo drive coil.
If 0.42mW/mA said input drive current of 1 mA output 0.42mW optical power, modulation gain is generally the bigger the better. The laser relative intensity noise RIN.
Polarizing beam splitter. Photodetachment is the reflection of the emitted light from the LD from the CD, first, so that the reflected light back to the LD laser cavity, resorted to shooting the laser does not produce noise, the second is reflected back with the information reflected laser The beam can have the smallest loss, first make the Q-surface filter out the ingredients other than the incident light A is P linear polarizer, make it a pure P linear polarizer, must also be Q face of P linear polarizer through the S linear polarized total internal reflection. Matter lens design, it is necessary depends on the thickness of the disc if the thickness of the disc are inconsistent with the design value. Welcome to order laser pointer with USB flash disks.
Will produce a spherical aberration, so that the aggregation properties deteriorate, which is why for the disc thickness 0.6mm DVD on the grounds of the material lens can not read the CD-ROM disc thickness 1.2mm signal. DVDbook provisions NA = 0.6, the general radius R = 2mm. fobj = 2R/2NA = 3.33 (mm). Generally read-only using the power of small injection aspheric optical resin can be recorded by the power of a larger, usually with multiple sets of optical glass lens combination, the aberration of the imaging department ministries goods must be strictly controlled the FES focus servo error signal to obtain a variety of ways, such as non-point like the difference method, blade method, dual-blade method, only the relatively simple optical system, a wider application of non-point aberration France.The characteristics of the laser. Because the laser is light amplification by stimulated emission of radiation-based light-emitting phenomenon, and thus it has many distinctive features compared with ordinary light source based on spontaneous emission.
Isolated from PBS containing information of the reflected light, with the exception of the part into the servo control system, the majority of the signal system, into electrical signals by PD, preamplifier, the RF signal. The design of the optical system of the optical head. DVD optical head including material lens drive system ACT (ACTUATOR) and the Department of Optics, rem lens drive system has two functions, is issued from the semiconductor laser laser focus on the information of the disc surface, and the other beam on the track and follow the track , because the focus is for the disc surface vibration to the error of less than 1μm to follow, the design focus servo drive coil.
If 0.42mW/mA said input drive current of 1 mA output 0.42mW optical power, modulation gain is generally the bigger the better. The laser relative intensity noise RIN.
Monday, November 19, 2012
It is the use method of laser pointer
It is the use method of laser pointer .
In the normal instrument operation does not need to. More specific information detailed in Chapter IV. The laser classification. According to the test gas when operating within the near infrared range between 700-2400nm laser gas analyzer, using a diode laser. The laser output power, according to the classification of the latest version of IEC 60825-1, the laser gas analyzer as a class of laser products. Note: The laser emission is not visible when determining the installation location of the laser gas analyzer, before the measurement point, we recommend 5 minimum flue diameter straight pipes after the measurement point to recommend the direct delivery of two flue diameter tube. Analyzer placement. The customer can choose the most suitable and appropriate kind of laser pointer .
Emission unit and receiver unit must be accessible. A person should be able to stand in the front of the transmitting unit or receiving unit, using two standard wrench to adjust the M16 screws. For the receiving unit, shown in Table 2-1, distance flange installed in the flue and it measured outward should have free space of 1 m. Table 2-1: The transmitter and receiver mounting tolerances. Flange and the requirements of the flue opening. Analyzer requires two holes relative, which are located on both sides of the diameter, the diameter of at least 50mm. The standard flange is used to connect the inner diameter of 50mm, outer diameter 165mm DN50/PN10 flange. The flange can be installed directly in the operation, for security reasons, can also act as a valve connected to the process. The measuring principle is known as infrared singlet absorption spectrum. It is based on this fact: most of the gas absorb specific wavelengths of light. The absorption of flue gas content is a direct reflection of. The customer can choose the suitable laser beam color for laser pointer .
The measurement principle is described in Table 1-1. The diode laser wavelength by scanning the selected absorption lines. Due to absorption of the diode laser and detector light on the road of the specific gas molecules, detecting the light intensity change due to the wavelength of the laser. In order to increase its sensitivity, the use of wavelength modulation technique: scan absorption lines, the laser wavelength will be a slight adjustment. The second harmonic signal is used to measure the concentration of absorbing gases. Since a specific wavelength, the absorption lines of other gases do not exist, so there is no direct interference from other gases. The measurement of gas concentration and absorption lines of the amplitude is proportional to the.
In the normal instrument operation does not need to. More specific information detailed in Chapter IV. The laser classification. According to the test gas when operating within the near infrared range between 700-2400nm laser gas analyzer, using a diode laser. The laser output power, according to the classification of the latest version of IEC 60825-1, the laser gas analyzer as a class of laser products. Note: The laser emission is not visible when determining the installation location of the laser gas analyzer, before the measurement point, we recommend 5 minimum flue diameter straight pipes after the measurement point to recommend the direct delivery of two flue diameter tube. Analyzer placement. The customer can choose the most suitable and appropriate kind of laser pointer .
Emission unit and receiver unit must be accessible. A person should be able to stand in the front of the transmitting unit or receiving unit, using two standard wrench to adjust the M16 screws. For the receiving unit, shown in Table 2-1, distance flange installed in the flue and it measured outward should have free space of 1 m. Table 2-1: The transmitter and receiver mounting tolerances. Flange and the requirements of the flue opening. Analyzer requires two holes relative, which are located on both sides of the diameter, the diameter of at least 50mm. The standard flange is used to connect the inner diameter of 50mm, outer diameter 165mm DN50/PN10 flange. The flange can be installed directly in the operation, for security reasons, can also act as a valve connected to the process. The measuring principle is known as infrared singlet absorption spectrum. It is based on this fact: most of the gas absorb specific wavelengths of light. The absorption of flue gas content is a direct reflection of. The customer can choose the suitable laser beam color for laser pointer .
The measurement principle is described in Table 1-1. The diode laser wavelength by scanning the selected absorption lines. Due to absorption of the diode laser and detector light on the road of the specific gas molecules, detecting the light intensity change due to the wavelength of the laser. In order to increase its sensitivity, the use of wavelength modulation technique: scan absorption lines, the laser wavelength will be a slight adjustment. The second harmonic signal is used to measure the concentration of absorbing gases. Since a specific wavelength, the absorption lines of other gases do not exist, so there is no direct interference from other gases. The measurement of gas concentration and absorption lines of the amplitude is proportional to the.
Thursday, November 15, 2012
The technology confirmation meeting of laser pointer
The technology confirmation meeting of laser pointer will be held as required by the customer.
ZEMAX software simulation based on the focal length and aberration curve results, I finally selected 25.8577mm the focal length, thus ensuring the minimum aberration. Through software emulation operations, before and after the collimating lens and the surface of the radius were 18.472mm-84.835mm. Thickness of 7mm, diameter of 10mm. This makes the divergence angle of compression to the 0.04267mrad, even if the distance is only a 500m radius of 21.34mm size of the circular spot, usually less than the full radius of 50mm target surface. This will not only meet the requirements of the laser range finder, but also saves manufacturing costs and facilitate the realization of small, modular, to ensure sufficient received power. The parents are informed of the fact that the school will be equipped with laser pointer .
Similarly the use of ZEMAX software, I designed a 10mm focal length of receiving lens. Lens thickness is 4mm, the front surface radius of 7.831mm, the surface radius-42.824mm. Because the receiving waves not only with the output of 635nm wavelength red light, also contains other miscellaneous light, so I further analysis of the receiver lens chromatic aberration, to ensure the output of 635nm wave normal reception. Since the receiver does not require a high use of the lens, so the receiving system needs further filtering and error analysis. Study, produced in Germany ACAM TDC-GP2 chip, the system averaged multiple measurements, and then calculating the average of the microcontroller to reduce the output error results. The company pays more attention to manufacture of laser pointer due to the large quantity of laser pointer .
Since the voltage generated by circuit supply voltage, temperature and other factors, so in order to produce high-pressure stability, and high-pressure adjustable within a certain range, the high-voltage circuit to add a feedback loop, as shown: test distance, due to different measuring the distance, leading to APD driver circuit output voltage signal changes drastically. In order to get a smaller signal amplitude changes in the preamplifier circuit, selection of automatic gain control (AGC) function of the amplifier, as shown in Figure. Preamplifier output signal amplitude, signal to noise ratio measurement unit is not enough to meet the requirements. In order to obtain sufficient signal to noise ratio and a higher magnification, the subsequent signal processing also need to zoom in and shaping.Among them, the non-axial propagation of light waves outside the cavity escapes soon: axial propagation of light waves able to spread in the cavity round-trip, when it spread in the laser material, the light intensity is growing.
ZEMAX software simulation based on the focal length and aberration curve results, I finally selected 25.8577mm the focal length, thus ensuring the minimum aberration. Through software emulation operations, before and after the collimating lens and the surface of the radius were 18.472mm-84.835mm. Thickness of 7mm, diameter of 10mm. This makes the divergence angle of compression to the 0.04267mrad, even if the distance is only a 500m radius of 21.34mm size of the circular spot, usually less than the full radius of 50mm target surface. This will not only meet the requirements of the laser range finder, but also saves manufacturing costs and facilitate the realization of small, modular, to ensure sufficient received power. The parents are informed of the fact that the school will be equipped with laser pointer .
Similarly the use of ZEMAX software, I designed a 10mm focal length of receiving lens. Lens thickness is 4mm, the front surface radius of 7.831mm, the surface radius-42.824mm. Because the receiving waves not only with the output of 635nm wavelength red light, also contains other miscellaneous light, so I further analysis of the receiver lens chromatic aberration, to ensure the output of 635nm wave normal reception. Since the receiver does not require a high use of the lens, so the receiving system needs further filtering and error analysis. Study, produced in Germany ACAM TDC-GP2 chip, the system averaged multiple measurements, and then calculating the average of the microcontroller to reduce the output error results. The company pays more attention to manufacture of laser pointer due to the large quantity of laser pointer .
Since the voltage generated by circuit supply voltage, temperature and other factors, so in order to produce high-pressure stability, and high-pressure adjustable within a certain range, the high-voltage circuit to add a feedback loop, as shown: test distance, due to different measuring the distance, leading to APD driver circuit output voltage signal changes drastically. In order to get a smaller signal amplitude changes in the preamplifier circuit, selection of automatic gain control (AGC) function of the amplifier, as shown in Figure. Preamplifier output signal amplitude, signal to noise ratio measurement unit is not enough to meet the requirements. In order to obtain sufficient signal to noise ratio and a higher magnification, the subsequent signal processing also need to zoom in and shaping.Among them, the non-axial propagation of light waves outside the cavity escapes soon: axial propagation of light waves able to spread in the cavity round-trip, when it spread in the laser material, the light intensity is growing.
Tuesday, November 13, 2012
laser pointer can improve the users’ modern information tools use level
Instead, they can directly use laser pointer to aim at the key content.
And continue with the class of multimedia courseware development intuitive, and really understand and master the key and difficult content, grip laser operation of basic physical principles and theoretical basis of laser application technology. To further study the follow-up professional courses lay the foundation for the future in optoelectronics and related areas such as electronics and information science research and teaching in academic and lay a solid theoretical foundation. This lesson teaching methods: visualization with the help of multimedia courseware to enable students to truly understand and master the key and difficult content. laser pointer can improve the users’ modern information tools use level.
Hold down pins, straight out SPG bracket welded on the following four points, a total of four points. Four points to uniform size, each point of welding time in three seconds. Weld joints without confirmation, to smooth joints. Note: welding, soldering iron can not bend the suspension lines. After soldering, check Wuxi grain adhesion, adhesion must be clean tin capsules. The ACT component of the specified location into the DAMP glue. Even at the size of each glue, flip hanging wire. After gel point after UV irradiation. Confirm the amount of suitable plastic, dispensing position without offset, DAMP did not glue stains other locations. laser pointer can “hide in” screen, just as the effect of press the “F5”key.
Dispensing, the needles do not touch the SPG; not stained at the non-dispensing glue. Bamboo peripheral OBL forceps, and placed in a central location ACT frame, OBL to be flat. OBL with UV glue bonding on the frame, and then UV irradiation. OBL sure is no float, tilt. UV glue stains can not be objective, but also not out of frame. The right amount of glue, not higher than the lens surface. The ACT for good visual inspection, confirmation of the characteristics of the ACT test. Servo technology is the key technology of DVD loader, CD-ROM is a breakthrough technology industry to promote the Commission to focus one's attention more and more related industries. What are the prominent advantages of laser pointer for users?
DVD technology is mainly related to the laser head servo, servo systems, coding technology, machine control systems and so on. Focus servo system includes servo, tracing the servo, the servo feed, servo and spindle servo five parts out of warehouses. Focus servo unit from the focus error detection, phase compensator, and drives. Some distance from the disc to the lens, in the process of high-speed rotating disc surface will cause vibration and eccentric depth of focus changes and other factors, to enable accurate positioning of light information in the CD track, through the focus servo system error and seek to overcome track error.
And continue with the class of multimedia courseware development intuitive, and really understand and master the key and difficult content, grip laser operation of basic physical principles and theoretical basis of laser application technology. To further study the follow-up professional courses lay the foundation for the future in optoelectronics and related areas such as electronics and information science research and teaching in academic and lay a solid theoretical foundation. This lesson teaching methods: visualization with the help of multimedia courseware to enable students to truly understand and master the key and difficult content. laser pointer can improve the users’ modern information tools use level.
Hold down pins, straight out SPG bracket welded on the following four points, a total of four points. Four points to uniform size, each point of welding time in three seconds. Weld joints without confirmation, to smooth joints. Note: welding, soldering iron can not bend the suspension lines. After soldering, check Wuxi grain adhesion, adhesion must be clean tin capsules. The ACT component of the specified location into the DAMP glue. Even at the size of each glue, flip hanging wire. After gel point after UV irradiation. Confirm the amount of suitable plastic, dispensing position without offset, DAMP did not glue stains other locations. laser pointer can “hide in” screen, just as the effect of press the “F5”key.
Dispensing, the needles do not touch the SPG; not stained at the non-dispensing glue. Bamboo peripheral OBL forceps, and placed in a central location ACT frame, OBL to be flat. OBL with UV glue bonding on the frame, and then UV irradiation. OBL sure is no float, tilt. UV glue stains can not be objective, but also not out of frame. The right amount of glue, not higher than the lens surface. The ACT for good visual inspection, confirmation of the characteristics of the ACT test. Servo technology is the key technology of DVD loader, CD-ROM is a breakthrough technology industry to promote the Commission to focus one's attention more and more related industries. What are the prominent advantages of laser pointer for users?
DVD technology is mainly related to the laser head servo, servo systems, coding technology, machine control systems and so on. Focus servo system includes servo, tracing the servo, the servo feed, servo and spindle servo five parts out of warehouses. Focus servo unit from the focus error detection, phase compensator, and drives. Some distance from the disc to the lens, in the process of high-speed rotating disc surface will cause vibration and eccentric depth of focus changes and other factors, to enable accurate positioning of light information in the CD track, through the focus servo system error and seek to overcome track error.
Monday, November 12, 2012
It is the applicable occasions of laser pointer
laser pointer can make your speech and demonstration more successful.
It was not until high brightness, color pure, good coherence after the advent of laser, holographic really shoot. Holographic and three-dimensional photography are two different things. Although the three-dimensional color photographs look colorful, structured, rich three-dimensional, but it is still the single image I fear, even the best can not be replaced according to the true three-dimensional kind. For example, a square block of three-dimensional photographs, no matter how we change the viewing angle, vertical cross look to see, see only the pictures that picture. But holographic photo is different, we just change the viewing angle, you can see the positive aspects of the six boxes. Because all of holographic technology can object geometry information is recorded on the film, which is the hologram of the most important characteristics.
Page, make mark, made of three-dimensional advertising; museums use it to replace the precious relics on display. There is a machine tool manufacturing company abroad, introduction of goods to another country will be open on the run with a hologram instead of a real machine tool exhibition. All kinds of machine tools exhibition hall of hologram, holographic pictures of these machines and really looks no different, but more aroused the interest of visitors. The shooting distance of yellow ray laser pointer is much shorter.
Conceiving of the hologram is an exquisite work of art. The United States and France and other countries have hologram museum, focused on the world's most beautiful works. Holography can also record the precious historical relics, cultural relics in case there was severe damage, even if gone, we still can holographic reconstruction. Such as attractions like the Beijing Summer Palace, when the Boxer Rebellion was burned, although it intends to rebuild, because they do not know the whole face, it is difficult to fully recover. If the hologram invented 100 years earlier, then that's easy. Three-dimensional holographic pictures from the scene inspired, scientists thought of holographic films and holographic television. It is the applicable occasions of laser pointer .
Experimental three-dimensional holographic film has been in the former Soviet Union appear. Show this movie, the audience does not see the picture on screen, but in the audience among the people there are rich, immersive feel. The holographic television, because it involves more complex technical issues, are also being studied. In 1982, the German television station broadcast a three-dimensional television, not the laser holographic television, it's the same principle and the general three-dimensional movie to watch when wearing a pair of special glasses.
It was not until high brightness, color pure, good coherence after the advent of laser, holographic really shoot. Holographic and three-dimensional photography are two different things. Although the three-dimensional color photographs look colorful, structured, rich three-dimensional, but it is still the single image I fear, even the best can not be replaced according to the true three-dimensional kind. For example, a square block of three-dimensional photographs, no matter how we change the viewing angle, vertical cross look to see, see only the pictures that picture. But holographic photo is different, we just change the viewing angle, you can see the positive aspects of the six boxes. Because all of holographic technology can object geometry information is recorded on the film, which is the hologram of the most important characteristics.
Page, make mark, made of three-dimensional advertising; museums use it to replace the precious relics on display. There is a machine tool manufacturing company abroad, introduction of goods to another country will be open on the run with a hologram instead of a real machine tool exhibition. All kinds of machine tools exhibition hall of hologram, holographic pictures of these machines and really looks no different, but more aroused the interest of visitors. The shooting distance of yellow ray laser pointer is much shorter.
Conceiving of the hologram is an exquisite work of art. The United States and France and other countries have hologram museum, focused on the world's most beautiful works. Holography can also record the precious historical relics, cultural relics in case there was severe damage, even if gone, we still can holographic reconstruction. Such as attractions like the Beijing Summer Palace, when the Boxer Rebellion was burned, although it intends to rebuild, because they do not know the whole face, it is difficult to fully recover. If the hologram invented 100 years earlier, then that's easy. Three-dimensional holographic pictures from the scene inspired, scientists thought of holographic films and holographic television. It is the applicable occasions of laser pointer .
Experimental three-dimensional holographic film has been in the former Soviet Union appear. Show this movie, the audience does not see the picture on screen, but in the audience among the people there are rich, immersive feel. The holographic television, because it involves more complex technical issues, are also being studied. In 1982, the German television station broadcast a three-dimensional television, not the laser holographic television, it's the same principle and the general three-dimensional movie to watch when wearing a pair of special glasses.
Sunday, November 11, 2012
The manager has approve the photoelectric technology of laser pointer
The manager has approve the photoelectric technology of laser pointer .
German electronics company Dassault, Zeiss optic and the British GEC-Marconi Avionics, Marconi SpA, jointly developed by Eloise CO2 laser radar, is another obstacle Helicopter alarm system can provide early 10s in front of 5mm cable with alarm, so that the helicopter in flight operations under adverse weather conditions. Marconi SpA company also provides self-developed Loam obstacle avoidance system. The system uses eye-safe laser technology to detect wires, trees, masts and other obstacles. Pilots to receive visual and audible alarm, display the shape of obstacles, position, direction and distance. Laser radar by measuring the small amount of naturally occurring atmospheric backscattering particles, can detect wind speed, turbulence detection, real-time measurement of the wind farm. Since the returned backscatter radiation is very weak, and therefore need to use air monitoring sensitive laser radar receiver. The photoelectric technology of laser pointer will be adopted by this workshop.
In the high-altitude bombing and other weapons of a problem is encountered, the wind disturbance down trajectory. U.S. Air Force tried to use the main approach is to use inertial devices to increase the tail or GPS-guided, correct flight path. But this increased the cost of throwing all kinds of weapons. Air Force Materiel Command ongoing ballistic wind project, using another method, namely the use of airborne laser radar to provide real-time information on wind throw area, so by adjusting the throwing point, to compensate for wind. The program's goal is to measure the time between aircraft and ground-dimensional wind field maps, allowing accurate from an altitude of over 3000m threw. Stratified by 100m wind farm plans, speed accuracy of 0.5m / s or less. Commissioned by the Air Force Wright Laboratory developed coherent laser radar technology companies. The first flash-pumped laser radar using laser pulse energy 50mJ, pulse repetition frequency 7Hz, installed in the C-141 aircraft on the test. The second laser radar using diode-pumped laser pulse energy 3.5mJ, pulse repetition frequency 200Hz, weight 913kg, volume of 3.26m3. The photoelectric technology of laser pointer can be adopted for this product.
Third human eye safety Tm (YAG laser radar. The laser radar wavelength 2021.84nm, the laser pulse energy 12mJ, the laser pulse duration 650ns, pulse repetition frequency of 100Hz, weight 272kg, volume of 1.27m3. Lidar receiver by the transmitter , signal processing devices, environmental control devices, optical scanners, inertial navigation unit and power supply is mounted in a modified C-130 aircraft fuel tank nose cone stand.
German electronics company Dassault, Zeiss optic and the British GEC-Marconi Avionics, Marconi SpA, jointly developed by Eloise CO2 laser radar, is another obstacle Helicopter alarm system can provide early 10s in front of 5mm cable with alarm, so that the helicopter in flight operations under adverse weather conditions. Marconi SpA company also provides self-developed Loam obstacle avoidance system. The system uses eye-safe laser technology to detect wires, trees, masts and other obstacles. Pilots to receive visual and audible alarm, display the shape of obstacles, position, direction and distance. Laser radar by measuring the small amount of naturally occurring atmospheric backscattering particles, can detect wind speed, turbulence detection, real-time measurement of the wind farm. Since the returned backscatter radiation is very weak, and therefore need to use air monitoring sensitive laser radar receiver. The photoelectric technology of laser pointer will be adopted by this workshop.
In the high-altitude bombing and other weapons of a problem is encountered, the wind disturbance down trajectory. U.S. Air Force tried to use the main approach is to use inertial devices to increase the tail or GPS-guided, correct flight path. But this increased the cost of throwing all kinds of weapons. Air Force Materiel Command ongoing ballistic wind project, using another method, namely the use of airborne laser radar to provide real-time information on wind throw area, so by adjusting the throwing point, to compensate for wind. The program's goal is to measure the time between aircraft and ground-dimensional wind field maps, allowing accurate from an altitude of over 3000m threw. Stratified by 100m wind farm plans, speed accuracy of 0.5m / s or less. Commissioned by the Air Force Wright Laboratory developed coherent laser radar technology companies. The first flash-pumped laser radar using laser pulse energy 50mJ, pulse repetition frequency 7Hz, installed in the C-141 aircraft on the test. The second laser radar using diode-pumped laser pulse energy 3.5mJ, pulse repetition frequency 200Hz, weight 913kg, volume of 3.26m3. The photoelectric technology of laser pointer can be adopted for this product.
Third human eye safety Tm (YAG laser radar. The laser radar wavelength 2021.84nm, the laser pulse energy 12mJ, the laser pulse duration 650ns, pulse repetition frequency of 100Hz, weight 272kg, volume of 1.27m3. Lidar receiver by the transmitter , signal processing devices, environmental control devices, optical scanners, inertial navigation unit and power supply is mounted in a modified C-130 aircraft fuel tank nose cone stand.
Friday, November 9, 2012
the signal will be transmitted through the radio wave
laser pointer should be free from the interruption of the electromagnetism.
Instead, blend and combine together cartridges, toner particles in the middle of each small parcel of a blend oil particles are not only simplifies the internal structure of the machine, but also to print out the contents of the oil in a sense be greatly reduced. Network printing is accompanied by the development of network technology to develop a field of printer technology, which uses network connections instead of traditional direct interface between the printer and computer connection, the use of network printers and computer data transmission to achieve two-way data exchange between , strictly speaking, technology is actually a network printer interface to alternative technologies. In the network print mode, print server plays a key role, which implements the connection between the printer and the network, the network is responsible for receiving print data from the computer and send to the printer, and printer status information to the computer; Another print server also manage print jobs from queues on different computers. When laser pointer adopts RF, the signal will be transmitted through the radio wave.
Network printing, because the printer is directly connected to the network, so all access to network computers can access and use the printer without any intermediate links. Print in printer work process, the data transfer rate is affecting print speed of a more important factor, especially in some high-performance laser printer or color printer, the printing process the printer needs to transfer large amounts of data, data transmission rate the impact of the printing speed is very obvious. As the network data transfer rate than traditional parallel port or USB interface transfer rate is much higher, so the most direct network printing is its speed advantage. "PC World" evaluation laboratory in the years of printer product evaluation process found that some high-performance monochrome laser printers and color laser printers, print some large complex (including complex graphics, high-precision images, several special fonts) document, color documents, network printing can be clearly demonstrated its speed advantage. Is a device-independent PostScript printer language, which can define the image does not take into account the characteristics of the output device (such as printer resolution, paper size, etc.), and its text and graphics to implement the same process, which to bring a great deal of flexibility in the font.
Instead, blend and combine together cartridges, toner particles in the middle of each small parcel of a blend oil particles are not only simplifies the internal structure of the machine, but also to print out the contents of the oil in a sense be greatly reduced. Network printing is accompanied by the development of network technology to develop a field of printer technology, which uses network connections instead of traditional direct interface between the printer and computer connection, the use of network printers and computer data transmission to achieve two-way data exchange between , strictly speaking, technology is actually a network printer interface to alternative technologies. In the network print mode, print server plays a key role, which implements the connection between the printer and the network, the network is responsible for receiving print data from the computer and send to the printer, and printer status information to the computer; Another print server also manage print jobs from queues on different computers. When laser pointer adopts RF, the signal will be transmitted through the radio wave.
Network printing, because the printer is directly connected to the network, so all access to network computers can access and use the printer without any intermediate links. Print in printer work process, the data transfer rate is affecting print speed of a more important factor, especially in some high-performance laser printer or color printer, the printing process the printer needs to transfer large amounts of data, data transmission rate the impact of the printing speed is very obvious. As the network data transfer rate than traditional parallel port or USB interface transfer rate is much higher, so the most direct network printing is its speed advantage. "PC World" evaluation laboratory in the years of printer product evaluation process found that some high-performance monochrome laser printers and color laser printers, print some large complex (including complex graphics, high-precision images, several special fonts) document, color documents, network printing can be clearly demonstrated its speed advantage. Is a device-independent PostScript printer language, which can define the image does not take into account the characteristics of the output device (such as printer resolution, paper size, etc.), and its text and graphics to implement the same process, which to bring a great deal of flexibility in the font.
Thursday, November 8, 2012
This method uses a special optical fiber
The package weight of laser pointer is a part of the gross weight of laser pointer .
Very rapid development of fluorescent probes, Molecular Probes currently only U.S. company can offer 1,800 kinds of fluorescent probes [3, each year the company also has introduced new fluorescent probes. Usually the content of each test or test substances have several or dozens of related or specific fluorescent probes. Select the appropriate fluorescent probes is effective to carry out experiments and to obtain desired results protection.
Treatment of myopia is the use of ablation on the corneal surface for precision machining, control the refractive index (correction) process. Figure 10 shows the schematic of the laser corneal surgery. Point in 1990, after the invention of optical fiber, a variety of optical fiber and laser equipment are used to try laser prostatectomy. The most commonly used laser is the Nd: YAG laser, of course, other lasers such as KTP: YAG lasers, semiconductor diode laser and the recent Ho: YAG laser can be used to treat BPH. The system includes a laser probe through the urethra into the (partial flexion of the beam can reach 90 °), a timely 7.5MHz ultrasound transducer and a Nd: YAG laser generator. Most laser pointer companies pay attention to the technology innovation of laser pointer .
Use the side firing optical fiber to cause effective coagulation necrosis and tissue vaporization. UrolaseTM is currently the most used and evaluation of non-contact fiber, it can pre-set point in the radiation caused by the solidification of the organization. This method uses a special optical fiber, can be repeatedly and directly penetrate the prostate, irradiation can produce a wide range of coagulation necrosis and subsequent atrophy, and tissue decay phenomenon does not occur. In imaging facilities, guided percutaneous needle through the optical fiber to the center of the organ lesions, and laser transmission through the device. The treatment is the key to the optical fiber placed in the right place, right on the part of the treatment and the extent of necrosis caused by use of laser strict match and confirm normal and abnormal areas can heal safely. So the whole process depends on imaging. The details of technology innovation of laser pointer will be discussed in the meeting.
Very rapid development of fluorescent probes, Molecular Probes currently only U.S. company can offer 1,800 kinds of fluorescent probes [3, each year the company also has introduced new fluorescent probes. Usually the content of each test or test substances have several or dozens of related or specific fluorescent probes. Select the appropriate fluorescent probes is effective to carry out experiments and to obtain desired results protection.
Treatment of myopia is the use of ablation on the corneal surface for precision machining, control the refractive index (correction) process. Figure 10 shows the schematic of the laser corneal surgery. Point in 1990, after the invention of optical fiber, a variety of optical fiber and laser equipment are used to try laser prostatectomy. The most commonly used laser is the Nd: YAG laser, of course, other lasers such as KTP: YAG lasers, semiconductor diode laser and the recent Ho: YAG laser can be used to treat BPH. The system includes a laser probe through the urethra into the (partial flexion of the beam can reach 90 °), a timely 7.5MHz ultrasound transducer and a Nd: YAG laser generator. Most laser pointer companies pay attention to the technology innovation of laser pointer .
Use the side firing optical fiber to cause effective coagulation necrosis and tissue vaporization. UrolaseTM is currently the most used and evaluation of non-contact fiber, it can pre-set point in the radiation caused by the solidification of the organization. This method uses a special optical fiber, can be repeatedly and directly penetrate the prostate, irradiation can produce a wide range of coagulation necrosis and subsequent atrophy, and tissue decay phenomenon does not occur. In imaging facilities, guided percutaneous needle through the optical fiber to the center of the organ lesions, and laser transmission through the device. The treatment is the key to the optical fiber placed in the right place, right on the part of the treatment and the extent of necrosis caused by use of laser strict match and confirm normal and abnormal areas can heal safely. So the whole process depends on imaging. The details of technology innovation of laser pointer will be discussed in the meeting.
Wednesday, November 7, 2012
The industry of remote control laser pointer becomes more and more mature
Users can obtain fantastic convenience with remote control laser pointer .
The measurement signals and other control parameters to a file; observation and erasing apparatus error log; configuration 4-20 mA process temperature and pressure input; configuration output 4-20 mA measurement; change to measure the average time; gas alarm level setting; setting the optical path parameters; change the concentration of units; change the display format of the concentration; change the instrument clock time; to calibrate the instrument; all the instrument parameters to a file; instrument parameters to recover from the file; configuration Ethernet connection. Through the different menus, the necessary installation parameters may have been set. All you have to finish setting the parameters, the personal computer is no longer needed. Laser gas analyzer has all the parameters are stored in the memory. Therefore, the personal computer can not connect, and the laser gas analyzers do not have to either turn off or turn on to reset parameters. The industry of remote control laser pointer becomes more and more mature.
After starting the program, the screen will display equipment and personal computers connected to a choice: for a direct serial connection or modem connection, an available port from the drop down list, select the PC serial port and press the appropriate button. When using a modem, you will be asked to dial a phone number. If the number on the first digit is zero, the software after dialing the dial zero before the remaining numbers will be suspended. If you need additional pause between numbers increase in the "." If you are using LAN communication, you will be asked the number of IP addresses and channels: A typical IP address and number of channels were set to the default value 192.168.1.237 and 5001. If the IP address and the number of channels need to be changed, run the program with a direct serial connection. As described in Section 4.3.8 Configuring TCP / IP parameters. The technology used by remote control laser pointer becomes more and more advanced.
After the connection has been established in the instrument, you will be prompted to the user mode or advanced mode, start the program. Press the start the program. This program mode set by the parameters of the instrument limited access provides a simple interface, installation and normal operation of the instrument should be used. Password can only set the parameters of the instrument full access to use the advanced mode. This program mode services in the instrument calibration process should be used.
The measurement signals and other control parameters to a file; observation and erasing apparatus error log; configuration 4-20 mA process temperature and pressure input; configuration output 4-20 mA measurement; change to measure the average time; gas alarm level setting; setting the optical path parameters; change the concentration of units; change the display format of the concentration; change the instrument clock time; to calibrate the instrument; all the instrument parameters to a file; instrument parameters to recover from the file; configuration Ethernet connection. Through the different menus, the necessary installation parameters may have been set. All you have to finish setting the parameters, the personal computer is no longer needed. Laser gas analyzer has all the parameters are stored in the memory. Therefore, the personal computer can not connect, and the laser gas analyzers do not have to either turn off or turn on to reset parameters. The industry of remote control laser pointer becomes more and more mature.
After starting the program, the screen will display equipment and personal computers connected to a choice: for a direct serial connection or modem connection, an available port from the drop down list, select the PC serial port and press the appropriate button. When using a modem, you will be asked to dial a phone number. If the number on the first digit is zero, the software after dialing the dial zero before the remaining numbers will be suspended. If you need additional pause between numbers increase in the "." If you are using LAN communication, you will be asked the number of IP addresses and channels: A typical IP address and number of channels were set to the default value 192.168.1.237 and 5001. If the IP address and the number of channels need to be changed, run the program with a direct serial connection. As described in Section 4.3.8 Configuring TCP / IP parameters. The technology used by remote control laser pointer becomes more and more advanced.
After the connection has been established in the instrument, you will be prompted to the user mode or advanced mode, start the program. Press the start the program. This program mode set by the parameters of the instrument limited access provides a simple interface, installation and normal operation of the instrument should be used. Password can only set the parameters of the instrument full access to use the advanced mode. This program mode services in the instrument calibration process should be used.
Tuesday, November 6, 2012
More functions can be added to Laser Pointer
More functions can be added to Laser Pointer .
Liquid dye substances with very wide, which makes it required by the mode-locked laser active medium. The 1970s, people use the synchronously pumped mode-locked dye laser to obtain the order of ps light pulses, and later the collision mode-locked dye laser and cavity pulse compression technology, the optical pulse width compression to 6fs. The semiconductor laser is a semiconductor material of the laser as a laser material. It has ultra-compact, high efficiency, simple structure, inexpensive and high-speed work a number of advantages. Come out since 1962, especially since the 1980s, the extremely rapid development. It is the most important light source in the field of optical communications, and important in many aspects of the CD, VCD, DVD player, computer CD-ROM drive, laser printer, holography, laser alignment, ranging and medical applications. It is the short and small type Laser Pointer .
The semiconductor laser is injected by the laser amplifier. Although it is a necessary condition for the laser and other lasers, must also meet the conditions of population inversion, resonant, but it very different from several laser excitation mechanism discussed earlier. Between the electronic transition in the conduction band of the semiconductor material of the electronic states and the hole in the valence band state, rather than atomic, molecular, ion lasers as between the two to determine the level. Semiconductor materials have stimulated absorption, stimulated emission and spontaneous emission process. Current or optical excitation, the semiconductor valence band electrons can gain energy, the transition to the conduction band, forming a hole in the valence band, which is equivalent to stimulated absorption process.
Beryllium oxide ceramic with excellent performance compared to an ideal material, but it is highly toxic, affecting the application. The widely used high-purity dense graphite. Since graphite is a good conductor, so in order to maintain the discharge, the graphite discharge tube segment structure, shown in Figure (5-14) as shown in. The entire structure is placed in a water-cooled units within the quartz tube, the ends were to provide the cathode of the electron emission and collection of electronic graphite anode. In order to provide a large emission current, usually between heated barium tungsten cathode. In order to make the Ar + laser stability, Ar + laser should be set back to the trachea. This is because in the high current density, low-pressure discharge, there is a serious gas pump effect.
Liquid dye substances with very wide, which makes it required by the mode-locked laser active medium. The 1970s, people use the synchronously pumped mode-locked dye laser to obtain the order of ps light pulses, and later the collision mode-locked dye laser and cavity pulse compression technology, the optical pulse width compression to 6fs. The semiconductor laser is a semiconductor material of the laser as a laser material. It has ultra-compact, high efficiency, simple structure, inexpensive and high-speed work a number of advantages. Come out since 1962, especially since the 1980s, the extremely rapid development. It is the most important light source in the field of optical communications, and important in many aspects of the CD, VCD, DVD player, computer CD-ROM drive, laser printer, holography, laser alignment, ranging and medical applications. It is the short and small type Laser Pointer .
The semiconductor laser is injected by the laser amplifier. Although it is a necessary condition for the laser and other lasers, must also meet the conditions of population inversion, resonant, but it very different from several laser excitation mechanism discussed earlier. Between the electronic transition in the conduction band of the semiconductor material of the electronic states and the hole in the valence band state, rather than atomic, molecular, ion lasers as between the two to determine the level. Semiconductor materials have stimulated absorption, stimulated emission and spontaneous emission process. Current or optical excitation, the semiconductor valence band electrons can gain energy, the transition to the conduction band, forming a hole in the valence band, which is equivalent to stimulated absorption process.
Beryllium oxide ceramic with excellent performance compared to an ideal material, but it is highly toxic, affecting the application. The widely used high-purity dense graphite. Since graphite is a good conductor, so in order to maintain the discharge, the graphite discharge tube segment structure, shown in Figure (5-14) as shown in. The entire structure is placed in a water-cooled units within the quartz tube, the ends were to provide the cathode of the electron emission and collection of electronic graphite anode. In order to provide a large emission current, usually between heated barium tungsten cathode. In order to make the Ar + laser stability, Ar + laser should be set back to the trachea. This is because in the high current density, low-pressure discharge, there is a serious gas pump effect.
Monday, November 5, 2012
The minute of green laser pointer has been drafted and prepared
The minute of green laser pointer has been drafted and prepared.
Such as carbon tungsten steel 60 # laser cladding, hardness up to 2200HV more than the wear resistance of about 20 times the substrate 60 # steel. Its wear resistance, corrosion resistance and flame spraying the surface of Q235 steel by laser cladding alloy after CoCrSiB compared and found that the corrosion resistance of the former was significantly higher than the latter. The laser cladding technique involves cross-disciplinary high-tech optical, mechanical, electrical, computer controller (CNC systems), materials, physics, chemistry discipline. In recent years, combined with the rise of rapid prototyping CAD technology processing technology for laser cladding technology has added a new vitality. The drawing of green laser pointer was mainly discussed.
At present, the laser cladding technology has become the preparation of new materials, metal parts quickly and directly to manufacturing, failure of one of the important means of green re-manufactured metal parts, such as the turbine wheel shaft, a large generator shaft, a large fan shaft wear and tear repair. Been widely used in aviation, petroleum, automobile, machinery manufacturing, shipbuilding, mold manufacturing industry. The advantages and disadvantages of laser cladding forming technology: laser cladding formed by the coating hardness and high reliability. Parts formed by laser cladding is very dense. Disadvantages: high cost of laser cladding. Laser cladding technology for the production environment are higher, and susceptible to outside influence an adverse impact on the hardness of precision parts. The technology improvement suggestion of green laser pointer is practical.
Laser wafer stack manufacturing (LOM). LOM technology is a common mold to create a new rapid prototyping technology. The principle is cutting sheet metal with a high-power laser beam, multi-layer thin slices and then superimposed, and its shape gradually changes, eventually to obtain the necessary prototype three-dimensional geometry. Each section contour of the three-dimensional solid model computer-controlled CO2 laser beam for cutting thin material (such as the volume of the underside of adhesive plaint, or being developed by the metal thin materials, etc.), and gradually each contour, and sticky knot formation of rapid prototyping. This method can make the casting master mold or for the loss of paper, precision casting. The technology will be a special foil layer by layer stacked. This is the discussion of technology of green laser pointer .
Such as carbon tungsten steel 60 # laser cladding, hardness up to 2200HV more than the wear resistance of about 20 times the substrate 60 # steel. Its wear resistance, corrosion resistance and flame spraying the surface of Q235 steel by laser cladding alloy after CoCrSiB compared and found that the corrosion resistance of the former was significantly higher than the latter. The laser cladding technique involves cross-disciplinary high-tech optical, mechanical, electrical, computer controller (CNC systems), materials, physics, chemistry discipline. In recent years, combined with the rise of rapid prototyping CAD technology processing technology for laser cladding technology has added a new vitality. The drawing of green laser pointer was mainly discussed.
At present, the laser cladding technology has become the preparation of new materials, metal parts quickly and directly to manufacturing, failure of one of the important means of green re-manufactured metal parts, such as the turbine wheel shaft, a large generator shaft, a large fan shaft wear and tear repair. Been widely used in aviation, petroleum, automobile, machinery manufacturing, shipbuilding, mold manufacturing industry. The advantages and disadvantages of laser cladding forming technology: laser cladding formed by the coating hardness and high reliability. Parts formed by laser cladding is very dense. Disadvantages: high cost of laser cladding. Laser cladding technology for the production environment are higher, and susceptible to outside influence an adverse impact on the hardness of precision parts. The technology improvement suggestion of green laser pointer is practical.
Laser wafer stack manufacturing (LOM). LOM technology is a common mold to create a new rapid prototyping technology. The principle is cutting sheet metal with a high-power laser beam, multi-layer thin slices and then superimposed, and its shape gradually changes, eventually to obtain the necessary prototype three-dimensional geometry. Each section contour of the three-dimensional solid model computer-controlled CO2 laser beam for cutting thin material (such as the volume of the underside of adhesive plaint, or being developed by the metal thin materials, etc.), and gradually each contour, and sticky knot formation of rapid prototyping. This method can make the casting master mold or for the loss of paper, precision casting. The technology will be a special foil layer by layer stacked. This is the discussion of technology of green laser pointer .
Sunday, November 4, 2012
The worker is disassembling laser pointer
The worker is disassembling laser pointer .
Gas Act - evaporation or volatilization of crystalline materials, including chemical vapor deposition and RF sputtering are two ways. The basic principle of the aqueous solution of raw materials (solute) dissolved in water, take appropriate measures to cause the solution supersaturation, the crystal in which the growth. Figure 3-1 in aqueous solution using the cooling method of crystal growth device, mentioned earlier, potassium dihydrogen phosphate (KDP), two deuterium phosphate potassium (of DKDP) crystals is to use the growth of such a device. KDP crystal nonlinear coefficient is small, easy deliquescence and other shortcomings, but it is easy to grow, can meet the large size of the laser nuclear explosion simulation requirements. Thus far, can be used in high power systems for laser fusion research in the crystal, only of KDP. The laser pointer workshop improves requirements of workshop management.
The hydrothermal method is a high temperature and high pressure crystallization from supersaturated aqueous solution. Industrialized bulk growth of crystals using this method. Crystal growth in a specially designed autoclave, crystalline materials on the bottom of the autoclave, solvent added to the kettle. Heated to a certain temperature difference between the upper and lower solution, convection, and the bottom of the high-temperature saturated solution with low temperature seed the formation of supersaturation and crystallization. Americans are the initial growth of KTP crystal line degree about 10mm, 800 ℃ in the 3000 atmospheric pressure in the inner diameter of only 38mm autoclave growth. KTP crystal nonlinear coefficient, light transmission band width, and chemical stability, excellent mechanical properties, is a very good performance of nonlinear optical crystal. The customer asks for the strict inspection for this kind of laser pointer .
The United States has a long time, the KTP crystal as the quartermaster substances under the control of the Congress, an embargo on China. Temperature solution method in the unremitting efforts of the scientific and technological workers in China, the successful growth of high optical quality, large size of the KTP crystal, breaking the monopoly of the United States and sold back to the United States to win the honor for the country. U.S. scientists need Z slices of 20 × 30mm2 KTP crystal waveguide experiment, but they KTP crystal growth can only be cut out 8 ~ 9mm the size of the Z slice, so he had in the international search for the large size of the KTP crystal, and ultimately found that China's artificial Crystal Institute KTP crystal growth to meet their needs had to be imported from China. laser pointer is in the direct charge of Vice Chief Engineer.
Gas Act - evaporation or volatilization of crystalline materials, including chemical vapor deposition and RF sputtering are two ways. The basic principle of the aqueous solution of raw materials (solute) dissolved in water, take appropriate measures to cause the solution supersaturation, the crystal in which the growth. Figure 3-1 in aqueous solution using the cooling method of crystal growth device, mentioned earlier, potassium dihydrogen phosphate (KDP), two deuterium phosphate potassium (of DKDP) crystals is to use the growth of such a device. KDP crystal nonlinear coefficient is small, easy deliquescence and other shortcomings, but it is easy to grow, can meet the large size of the laser nuclear explosion simulation requirements. Thus far, can be used in high power systems for laser fusion research in the crystal, only of KDP. The laser pointer workshop improves requirements of workshop management.
The hydrothermal method is a high temperature and high pressure crystallization from supersaturated aqueous solution. Industrialized bulk growth of crystals using this method. Crystal growth in a specially designed autoclave, crystalline materials on the bottom of the autoclave, solvent added to the kettle. Heated to a certain temperature difference between the upper and lower solution, convection, and the bottom of the high-temperature saturated solution with low temperature seed the formation of supersaturation and crystallization. Americans are the initial growth of KTP crystal line degree about 10mm, 800 ℃ in the 3000 atmospheric pressure in the inner diameter of only 38mm autoclave growth. KTP crystal nonlinear coefficient, light transmission band width, and chemical stability, excellent mechanical properties, is a very good performance of nonlinear optical crystal. The customer asks for the strict inspection for this kind of laser pointer .
The United States has a long time, the KTP crystal as the quartermaster substances under the control of the Congress, an embargo on China. Temperature solution method in the unremitting efforts of the scientific and technological workers in China, the successful growth of high optical quality, large size of the KTP crystal, breaking the monopoly of the United States and sold back to the United States to win the honor for the country. U.S. scientists need Z slices of 20 × 30mm2 KTP crystal waveguide experiment, but they KTP crystal growth can only be cut out 8 ~ 9mm the size of the Z slice, so he had in the international search for the large size of the KTP crystal, and ultimately found that China's artificial Crystal Institute KTP crystal growth to meet their needs had to be imported from China. laser pointer is in the direct charge of Vice Chief Engineer.
Saturday, November 3, 2012
When the customer just wants to use the star Laser Pointer
When the customer just wants to use the star Laser Pointer .
Which rely to a homojunction or heterojunction and a positive bias to the active layer Note the necessary carrier electrons from lower energy valence band excitation to the higher energy conduction band When the compound of a large number of electrons and holes in the inversion state, have given rise to the role of stimulated emission. to actually get to coherent stimulated emission must be made by stimulated emission of radiation in the optical cavity repeatedly Feedback antireflective coatings on the formation of laser oscillation, the laser cavity is formed as a mirror by the semiconductor crystal of the natural cleavage plane, usually in the end that no light is coated with high reflective multilayer dielectric thin film, out of the glossy plated on F -p cavity semiconductor laser crystal can easily use the P-n junction plane perpendicular to the natural cleavage plane of a surface constitute the F-P cavity.
A stack of several bar of a two-dimensional array. Recent progress in the most significant is the latter. Bar, the current industry standard is the device width of 1 cm CW output power of 50 w life of more than 5000 hours power the largest multi- Article component of total power of more than 30kW, the primary design goal of this device to maximize the output power and brightness bar inherent long-life without affecting the two main causes of device failure and performance degradation is the output surface due to overheating the spread of the burn and the so-called dark line defects in semiconductor materials. no matter what kind of semiconductor laser life are subject to the serious effects of operating temperature, which is to slow the spread of dark line defects as a reduction in operating temperature.Two metallic materials at room temperature laser absorption rate is generally below 20 ℃; when the metal temperature reaches the melting and vaporization produces branded point of the absorption rate of up to 40 ~ 50%; when close to the boiling point of up to 90% absorption rate.
While a variety of innovative and flexible design possible. This next-generation network is a dynamic, reconfigurable, it will make network operations more efficient management. It also for service providers to provide a new profit-making projects, deployment and maintenance costs have dropped significantly. Network applications of tunable lasers can be divided into two parts: static applications and dynamic applications. In static applications, the wavelength tunable lasers in the process of setting does not change over time. The most common static application is used as a source laser substitutes used in dense wavelength division multiplexing (DWDM) transmission system, a tunable laser to act as a multiple fixed wavelength lasers and flexible source of laser back-up. laser pointer is the best choice for you to select as the business gift.
Which rely to a homojunction or heterojunction and a positive bias to the active layer Note the necessary carrier electrons from lower energy valence band excitation to the higher energy conduction band When the compound of a large number of electrons and holes in the inversion state, have given rise to the role of stimulated emission. to actually get to coherent stimulated emission must be made by stimulated emission of radiation in the optical cavity repeatedly Feedback antireflective coatings on the formation of laser oscillation, the laser cavity is formed as a mirror by the semiconductor crystal of the natural cleavage plane, usually in the end that no light is coated with high reflective multilayer dielectric thin film, out of the glossy plated on F -p cavity semiconductor laser crystal can easily use the P-n junction plane perpendicular to the natural cleavage plane of a surface constitute the F-P cavity.
A stack of several bar of a two-dimensional array. Recent progress in the most significant is the latter. Bar, the current industry standard is the device width of 1 cm CW output power of 50 w life of more than 5000 hours power the largest multi- Article component of total power of more than 30kW, the primary design goal of this device to maximize the output power and brightness bar inherent long-life without affecting the two main causes of device failure and performance degradation is the output surface due to overheating the spread of the burn and the so-called dark line defects in semiconductor materials. no matter what kind of semiconductor laser life are subject to the serious effects of operating temperature, which is to slow the spread of dark line defects as a reduction in operating temperature.Two metallic materials at room temperature laser absorption rate is generally below 20 ℃; when the metal temperature reaches the melting and vaporization produces branded point of the absorption rate of up to 40 ~ 50%; when close to the boiling point of up to 90% absorption rate.
While a variety of innovative and flexible design possible. This next-generation network is a dynamic, reconfigurable, it will make network operations more efficient management. It also for service providers to provide a new profit-making projects, deployment and maintenance costs have dropped significantly. Network applications of tunable lasers can be divided into two parts: static applications and dynamic applications. In static applications, the wavelength tunable lasers in the process of setting does not change over time. The most common static application is used as a source laser substitutes used in dense wavelength division multiplexing (DWDM) transmission system, a tunable laser to act as a multiple fixed wavelength lasers and flexible source of laser back-up. laser pointer is the best choice for you to select as the business gift.
Friday, November 2, 2012
When the tube is mainly used for manufacture
Therefore, it is a solid-phase resistance welding method. High-frequency welding parts according to high-frequency current generated in the heat of welding can be divided into contact with high frequency and high frequency induction welding. Exposure to high-frequency welding, high frequency current through mechanical contact with the workpiece incoming workpiece. High frequency induction welding, high frequency induction loop current through the workpiece external coupling and induced current in the workpiece. Strong high-frequency welding is specialized welding method, according to the product is equipped with special equipment. Production rate, welding speed up to 30m/min. When the tube is mainly used for manufacture of longitudinal seam or spiral seam welding.
The absorption rate of the laser material and the material is proportional to the square root of the DC resistivity, and the laser wavelength is inversely proportional to the square root relationship. Angle of incidence greater the absorption rate is smaller. When the laser light perpendicular to the metal surface, the metal absorption maximum of the laser. But usually to protect the laser exit lens, the need to maintain a certain angle of incidence. For low reflectivity can be coated with a thin metal surface layer of metal powder, but both must be able to form alloys. Such as copper, gold, silver can cover the sharp thin layer, then the same penetration in the case of welding the energy required is about the original copper, gold, silver and required a quarter. Quality of the YAG laser welding device, the focus of the (spot size) is the optical path through the device itself precision coaxial output fiber and outgoing head of the imaging ratio to be guaranteed. Laser emitted when the focus falls just above the location of the work is zero. Defocus amount is zero distance from the focus away from this amount. Focus position than the position is called a negative zero defocus (focus down to internal parts), the distance is negative defocus amount. Instead, the focus distance value is less than zero is the amount of defocus. To obtain a larger penetration depth, focus position can be selected within a certain location on the workpiece, that is, using the negative defocus amount of welding. Submerged arc welding can be used to a larger current. Compared with manual arc welding, its biggest advantage is that the weld quality, high welding speed.
The absorption rate of the laser material and the material is proportional to the square root of the DC resistivity, and the laser wavelength is inversely proportional to the square root relationship. Angle of incidence greater the absorption rate is smaller. When the laser light perpendicular to the metal surface, the metal absorption maximum of the laser. But usually to protect the laser exit lens, the need to maintain a certain angle of incidence. For low reflectivity can be coated with a thin metal surface layer of metal powder, but both must be able to form alloys. Such as copper, gold, silver can cover the sharp thin layer, then the same penetration in the case of welding the energy required is about the original copper, gold, silver and required a quarter. Quality of the YAG laser welding device, the focus of the (spot size) is the optical path through the device itself precision coaxial output fiber and outgoing head of the imaging ratio to be guaranteed. Laser emitted when the focus falls just above the location of the work is zero. Defocus amount is zero distance from the focus away from this amount. Focus position than the position is called a negative zero defocus (focus down to internal parts), the distance is negative defocus amount. Instead, the focus distance value is less than zero is the amount of defocus. To obtain a larger penetration depth, focus position can be selected within a certain location on the workpiece, that is, using the negative defocus amount of welding. Submerged arc welding can be used to a larger current. Compared with manual arc welding, its biggest advantage is that the weld quality, high welding speed.
Thursday, November 1, 2012
Laser Pointer is a kind of a must for some commercial application
Laser Pointer is a kind of a must for some commercial application.
At this point, you can analyze the site of failure less likely to occur, a new alternative components being replaced. For the separation of component replacement, and sometimes may not have the original model of the device, when similar types of components can be replaced, but the components of the main parameters must be consistent. Such as when the printer main motor or scan motor character deformation occurs when the crystal damage, the replacement value of the crystal frequency must meet the original criteria. If the power supply protection device is damaged, split times can take up the main method of substitution, such as varistors, the thermal switch can not find, can be temporarily removed, or the use of folding times up the main way to find components, such as after can be replaced. Laser Pointer may be necessary for the meeting presentation.
But the resulting circuit protection fault occurs, this method must be very careful. In the detection of parts before briefly to use multimeter. Multimeter is one of the tools necessary repairs, it has digital and Analog two. Used in measuring the digital is more convenient and intuitive, so the maintenance of multi-use digital multimeter. The main purpose multimeter is working by measuring the point of the circuit current, voltage, resistance value (also known as the measurement of three elements), to judge the fault of the good and bad parts and components. Thermistor measurement: the thermistor resistance varies with temperature. Laser Pointer will play an important role in product presentation.
According to this feature, choose a multimeter resistance measurement file 10k file, the table T are connected at both ends of the thermistor, multimeter shows the resistance, generally 300 ~ 500kΩ. When the electric soldering iron close to the thermal resistance (Do not lean against the resistance, so as not to burn), the resistance increases with temperature and smaller. For laser printers is negative temperature coefficient thermistor. Such as the hands (or digital) does not move, or the beginning of measurement values displayed on the small, indicating that the resistance is damaged. Laser Pointer is commonly used in the commercial application. Laser printer, the paper transfer unit and the paper sensor switches, photoelectric sensors used in all control, light sensitive diode with cutoff, with a blank control the emission of light emitting diodes to achieve, blank rod corresponds to a control point. The customer wants to know something about the ordering information of Laser Pointer .
At this point, you can analyze the site of failure less likely to occur, a new alternative components being replaced. For the separation of component replacement, and sometimes may not have the original model of the device, when similar types of components can be replaced, but the components of the main parameters must be consistent. Such as when the printer main motor or scan motor character deformation occurs when the crystal damage, the replacement value of the crystal frequency must meet the original criteria. If the power supply protection device is damaged, split times can take up the main method of substitution, such as varistors, the thermal switch can not find, can be temporarily removed, or the use of folding times up the main way to find components, such as after can be replaced. Laser Pointer may be necessary for the meeting presentation.
But the resulting circuit protection fault occurs, this method must be very careful. In the detection of parts before briefly to use multimeter. Multimeter is one of the tools necessary repairs, it has digital and Analog two. Used in measuring the digital is more convenient and intuitive, so the maintenance of multi-use digital multimeter. The main purpose multimeter is working by measuring the point of the circuit current, voltage, resistance value (also known as the measurement of three elements), to judge the fault of the good and bad parts and components. Thermistor measurement: the thermistor resistance varies with temperature. Laser Pointer will play an important role in product presentation.
According to this feature, choose a multimeter resistance measurement file 10k file, the table T are connected at both ends of the thermistor, multimeter shows the resistance, generally 300 ~ 500kΩ. When the electric soldering iron close to the thermal resistance (Do not lean against the resistance, so as not to burn), the resistance increases with temperature and smaller. For laser printers is negative temperature coefficient thermistor. Such as the hands (or digital) does not move, or the beginning of measurement values displayed on the small, indicating that the resistance is damaged. Laser Pointer is commonly used in the commercial application. Laser printer, the paper transfer unit and the paper sensor switches, photoelectric sensors used in all control, light sensitive diode with cutoff, with a blank control the emission of light emitting diodes to achieve, blank rod corresponds to a control point. The customer wants to know something about the ordering information of Laser Pointer .
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