Stargazers use green laser pointer to point at the stars.
At present, high-end laser cutting, welding equipment is monopolized by foreign manufacturers, the competition is very fierce. China's laser processing systems market is also growing year by year,
with the development of the national economy following the 1993 to 2000. From Table 1.1 we can see that the output value of China's laser processing system 2000 is about 340.55 million yuan, the
relative increase of 114 percent in 1998 can be said that the application of surface soon. It can be seen, the rapid development of China's electronics industry has brought a huge boost to the
laser processing industry in China; the same time, China's laser processing system has improved steadily improve the quality of China's electronics industry has brought good news. green laser
pointer will not disturb others stargazing if it is not used continuously for a very long time.
This does not need to buy expensive imported laser processing equipment, to run, maintenance, parts replacement, maintenance, service brings about a lot of convenience. Different applications of
laser processing in China with foreign, for purposes of comparison, the 2000 application is shown in Table 1.2 can be seen, laser marking (marking) the proportion of the very important position in
the field of laser processing . From China's 2000 total sales of 340 million yuan, compared with $ 2.87 billion abroad in 1998 total sales, indicating the important industrial areas of China's
laser processing system for technological transformation of traditional industrial space. The charger of battery of green laser pointer can be bought easily in the ordinary store.
The use of advanced laser manufacturing systems will be difficult to deal with China into the WTO brings the impact of foreign products on the Chinese market from the market development fully
demonstrates China's laser processing systems there is considerable room for development. Laser cutting technology Review of laser cutting is the most important one in the laser processing industry
applications, the application of the first laser processing, most of the processing methods. It accounted for more than 70% of the entire laser processing industry. Laser cutting and other cutting
methods, the biggest difference is that it has the characteristics of high-speed, high precision and high adaptability. Also has a thin kerf, a small heat-affected zone, the quality of the cutting
surface, cutting noise, the kerf edge of the vertical, smooth trimming, cutting process is easy to realize the advantages of automation control. Some high power green laser pointer has an obvious
heating effect.
Thursday, January 31, 2013
Wednesday, January 30, 2013
It is also the alternative solution for cell phone jammer
It is also the alternative solution for cell phone jammer .
No it is not long-term development. Operators of mobile advertising can be classified according to the database on the mobile phone users, with -13 - the future development of mobile advertising
model in Changsha Aeronautical Vocational and Technical College Thesis classification of age, income, occupation, hobbies and so on to divide, the establishment of different category of the
database. This can be done to the dissemination of targeted, niche of the advertising communication. Can the dissemination of information accepted by the mobile phone users need mobile advertising
operator in consultation with users, to establish the dissemination of information by way of the contract. The third reason why the rights that the audience said that the maintenance of audience
interests, because the rules and objectives of information dissemination, to avoid the interference of unnecessary information. When it is not convenient method to install cell phone jammer .
The majority of ads to user needs the information spread by advertising operators, maintaining audience control over the information needs of Of course, not all users will accept this kind of
advertising, if users do not need via SMS, you can cancel the cell phone commercials. A specification of the industry requires not only laws and regulations, norms need to line, industry self-
regulation so that it can safeguard the rights of consumers to avoid advertisers and consumers of legal conflict. The current mobile advertising operations, the consumer is forced to accept
advertising. 4.2 mobile advertising, the future of the current mobile advertising is the point divisions and direct report two. To apply the supplementary installation method for cell phone
jammer on the outer wall. If you're like many people, you may be wondering how to detect if someone has placed a GPS tracking device on your vehicle. GPS Tracking devices have gotten so small, they
are commonly the size of a pack of cigarettes, and some are even as small as a quarter! With devices that small, they can be hard to detect, especially if you've got a large vehicle.
The first thing you need to know is that there are two different types GPS tracking devices:
A GPS Logger is a passive device, meaning that it doesn't actively transmit your GPS location. This means whoever put a GPS logger on your car will have to place it on your car, and then retrieve
it later in order to view the driving data, which is stored on the device.
No it is not long-term development. Operators of mobile advertising can be classified according to the database on the mobile phone users, with -13 - the future development of mobile advertising
model in Changsha Aeronautical Vocational and Technical College Thesis classification of age, income, occupation, hobbies and so on to divide, the establishment of different category of the
database. This can be done to the dissemination of targeted, niche of the advertising communication. Can the dissemination of information accepted by the mobile phone users need mobile advertising
operator in consultation with users, to establish the dissemination of information by way of the contract. The third reason why the rights that the audience said that the maintenance of audience
interests, because the rules and objectives of information dissemination, to avoid the interference of unnecessary information. When it is not convenient method to install cell phone jammer .
The majority of ads to user needs the information spread by advertising operators, maintaining audience control over the information needs of Of course, not all users will accept this kind of
advertising, if users do not need via SMS, you can cancel the cell phone commercials. A specification of the industry requires not only laws and regulations, norms need to line, industry self-
regulation so that it can safeguard the rights of consumers to avoid advertisers and consumers of legal conflict. The current mobile advertising operations, the consumer is forced to accept
advertising. 4.2 mobile advertising, the future of the current mobile advertising is the point divisions and direct report two. To apply the supplementary installation method for cell phone
jammer on the outer wall. If you're like many people, you may be wondering how to detect if someone has placed a GPS tracking device on your vehicle. GPS Tracking devices have gotten so small, they
are commonly the size of a pack of cigarettes, and some are even as small as a quarter! With devices that small, they can be hard to detect, especially if you've got a large vehicle.
The first thing you need to know is that there are two different types GPS tracking devices:
A GPS Logger is a passive device, meaning that it doesn't actively transmit your GPS location. This means whoever put a GPS logger on your car will have to place it on your car, and then retrieve
it later in order to view the driving data, which is stored on the device.
Tuesday, January 29, 2013
Laser of high-power green laser pointer should be carefully handled
Once the eyes are exposed to the laser beam of green laser pointer , they will get hurt.
The results show that: current, pulse width, frequency, defocus amount of joints forming. When the welding current is large, easy to burn through, undercut defects; when the pulse width too large, the heat output by the laser is not continuous, as the general instability of the "tide"; when the frequency is too large, the laser output energy density, the weld surface wave shape of the dense layers of fish phosphorus-shaped weld layer; the contrary, when the welding current, pulse width, frequency, small, in the surface of the weld nugget easy not welded through the defect, the joint strength and toughness is low; when the welding current, pulse width, with reasonable frequency, strength and ductility of the joints, respectively, of base metal 90% and 85%. Laser of high-power green laser pointer should be carefully handled.
Key words: laser welding, copper, and optimize the design, mechanical properties, grain size. Laser welding between carbon steel, ordinary alloy steel, stainless steel, different steel, stainless steel - low carbon steel, 416 stainless steel -310 stainless steel, 347 stainless steel the-HASTALLY nickel alloy, nickel electrode - cold forged steel, nickel content bi-metal band the same material of the variety of metals and their alloys of titanium, nickel, tin, copper, aluminum, chromium, niobium, gold, silver, steel, Kovar alloy welding. Copper - nickel, nickel - titanium, copper - titanium, titanium - molybdenum, brass - copper, low carbon steel - copper and other dissimilar metals welding. Cell phone batteries, jewelry, electronic components, sensors, clocks, precision machinery, communications, arts and crafts and other industries. The green laser pointer should be added with warning labels.
Laser welding technology. The application of information technology survey online Contributors Favorite comment text recommended to print text. Laser welding and electron beam welding, there are many similarities, but it does not require a vacuum chamber, does not produce X-ray, more suitable to promote the use of production. Laser welding has become the mainstream of high-energy beam welding technology development. Characteristics of the laser welding process.
The results show that: current, pulse width, frequency, defocus amount of joints forming. When the welding current is large, easy to burn through, undercut defects; when the pulse width too large, the heat output by the laser is not continuous, as the general instability of the "tide"; when the frequency is too large, the laser output energy density, the weld surface wave shape of the dense layers of fish phosphorus-shaped weld layer; the contrary, when the welding current, pulse width, frequency, small, in the surface of the weld nugget easy not welded through the defect, the joint strength and toughness is low; when the welding current, pulse width, with reasonable frequency, strength and ductility of the joints, respectively, of base metal 90% and 85%. Laser of high-power green laser pointer should be carefully handled.
Key words: laser welding, copper, and optimize the design, mechanical properties, grain size. Laser welding between carbon steel, ordinary alloy steel, stainless steel, different steel, stainless steel - low carbon steel, 416 stainless steel -310 stainless steel, 347 stainless steel the-HASTALLY nickel alloy, nickel electrode - cold forged steel, nickel content bi-metal band the same material of the variety of metals and their alloys of titanium, nickel, tin, copper, aluminum, chromium, niobium, gold, silver, steel, Kovar alloy welding. Copper - nickel, nickel - titanium, copper - titanium, titanium - molybdenum, brass - copper, low carbon steel - copper and other dissimilar metals welding. Cell phone batteries, jewelry, electronic components, sensors, clocks, precision machinery, communications, arts and crafts and other industries. The green laser pointer should be added with warning labels.
Laser welding technology. The application of information technology survey online Contributors Favorite comment text recommended to print text. Laser welding and electron beam welding, there are many similarities, but it does not require a vacuum chamber, does not produce X-ray, more suitable to promote the use of production. Laser welding has become the mainstream of high-energy beam welding technology development. Characteristics of the laser welding process.
Sunday, January 27, 2013
This is because when the increase in pulse width
This is because when the increase in pulse width, pulse energy increases, the weld heat affected zone width increase. 1 # 2 #, 10ms
12ms Figure 3.13 cross-section of welded joints # 14ms 3.2.3 weld of Figure 3.14 is the welding voltage of 260V, pulse frequency of 20Hz, the welding speed is 300mm/min, the pulse width of 10ms.
12m and 14ms when the weld.
Pulse width of 12ms, the hardness changes in the the M170P side of the heat affected zone is steeper because the M170P side of the heat-affected zone of martensite distribution concentrated in the
pulse width of 12ms. Welding speed and laser welding, the weld microstructure and properties of different thickness Tailored Blanks, you can use the energy of the line to describe the workpiece to
the laser radiation energy situation. The line energy is defined as: the laser energy per unit length of weld acceptance. Welding speed large, the energy of the welding line, penetration decline;
can get greater penetration. Lower welding speed range, with the welding speed increases, the penetration depth significantly reduced. Welding speed, the following variables welding experiments.
This kind of green laser pointer is very practical.
Welded joint cross-section morphology of the welding speed change from the figure can be seen 300mm/min and 400mm/min when, welded joints in the welding speed of forming good, When the welding
speed 500mm/min welded joints uneven thickness of the transition, the seam on the back to sag. The weld heat affected zone width decreases with the increase of welding speed, the width of the seam
on the back is also reduced.The focus is the important performance of laser pointer indeed.
The weld metal ferrite, ferrite distributed point-like carbides, coarse columnar grains close to the base metal heat affected zone of weld, the weld center organization small equiaxed grains. This
is because close to the base metal heat affected zone of the molten pool of metal, base metal particle nucleation, the temperature gradient in the negative cooling, the rapid growth along the
cooling direction, the grain formation of coarse columnar grain; due to the bath the center of the liquid metal temperature above the temperature of solid phase, and far from the border, the
undercooling is small, making the slow growth of crystals within the liquid metal, so the grain in the center of the weld location for small equiaxed grains. Welding speed of 400mm/min weld the
organization of the same ferrite, and the location of the center of the weld fine grain size. For example, if the power of laser pointer is 50mW and at this time the laser pointer can not light the
match or black material.
12ms Figure 3.13 cross-section of welded joints # 14ms 3.2.3 weld of Figure 3.14 is the welding voltage of 260V, pulse frequency of 20Hz, the welding speed is 300mm/min, the pulse width of 10ms.
12m and 14ms when the weld.
Pulse width of 12ms, the hardness changes in the the M170P side of the heat affected zone is steeper because the M170P side of the heat-affected zone of martensite distribution concentrated in the
pulse width of 12ms. Welding speed and laser welding, the weld microstructure and properties of different thickness Tailored Blanks, you can use the energy of the line to describe the workpiece to
the laser radiation energy situation. The line energy is defined as: the laser energy per unit length of weld acceptance. Welding speed large, the energy of the welding line, penetration decline;
can get greater penetration. Lower welding speed range, with the welding speed increases, the penetration depth significantly reduced. Welding speed, the following variables welding experiments.
This kind of green laser pointer is very practical.
Welded joint cross-section morphology of the welding speed change from the figure can be seen 300mm/min and 400mm/min when, welded joints in the welding speed of forming good, When the welding
speed 500mm/min welded joints uneven thickness of the transition, the seam on the back to sag. The weld heat affected zone width decreases with the increase of welding speed, the width of the seam
on the back is also reduced.The focus is the important performance of laser pointer indeed.
The weld metal ferrite, ferrite distributed point-like carbides, coarse columnar grains close to the base metal heat affected zone of weld, the weld center organization small equiaxed grains. This
is because close to the base metal heat affected zone of the molten pool of metal, base metal particle nucleation, the temperature gradient in the negative cooling, the rapid growth along the
cooling direction, the grain formation of coarse columnar grain; due to the bath the center of the liquid metal temperature above the temperature of solid phase, and far from the border, the
undercooling is small, making the slow growth of crystals within the liquid metal, so the grain in the center of the weld location for small equiaxed grains. Welding speed of 400mm/min weld the
organization of the same ferrite, and the location of the center of the weld fine grain size. For example, if the power of laser pointer is 50mW and at this time the laser pointer can not light the
match or black material.
Friday, January 25, 2013
The manufacture procedure of laser pointer specifies the manufacturing requirements
The manufacture procedure of laser pointer specifies the manufacturing requirements of laser pointer .
For laser scribing laser wavelength to be easily absorbed by the material with sufficiently high peak power, usually with acousto-optic Q-switched Nd: YAG laser. Domestic electronic eleven, Beijing
Opto-production laser scribing, silicon can be used to cut programs, cut programs can also be used for ceramic substrates, the diamond film solar cells. Integrated circuit manufacturing, the
stepper projection lithography mask defect-free version required, however, highly integrated circuit manufacturing Mask defects inevitably occur. Defects in two forms: a non-transparent material on
the pinhole; first transparent zone in the black spots. Laser-repair mask with the mask when the first edition version of the graphics video signals with CAD data in the database compared
to determine the type and location of defects, laser repair system to accept the information, the laser focus point in excess of the chromium, so that vaporization, which removed the black spots.
About 70-80% of the CO2 laser for cutting, about 70% of the YAG laser for the electronics industry. In addition, according to statistics, in 1995, Japan has so far set up 1,500 laser
processing station. Recent years, at an annual rate of new homes increased 200-300. Japan began in Ar laser retinal laser coagulation of medical, surgical carbon dioxide laser knife, medical Nd:
YAG laser endoscopy ushered in the first medical laser thermal energy generation. The better quality of laser pointer will attract more customers of laser pointer .
With the advances in laser technology, laser therapy was born chemical efficiency, opening up the broad road of medical laser, Today, Japan are all in the medical field of laser applications.
Japan's use of Nd: YAG SHG laser (532nm) of medical lasers, the fundamental power of 60W, tone harmonic power of about 20W, through the KTP wavelength conversion has been widely used in health
care. Er: YAG laser light compared with the 2.94-micron to 10.6 micron carbon dioxide laser is more susceptible to water, Ca, P, etc. are absorbed, used for cutting, removal of more water body
incision of soft tissue and bone, the performance is much better than carbon dioxide laser knife . As can be fiber optic, in the future, if the 3-micron fiber optical power with the stability of
the successful development of the affected area will be used for non-body cavity incision surgery. In addition, rare earth elements Ho: YAG laser has also been started.
For laser scribing laser wavelength to be easily absorbed by the material with sufficiently high peak power, usually with acousto-optic Q-switched Nd: YAG laser. Domestic electronic eleven, Beijing
Opto-production laser scribing, silicon can be used to cut programs, cut programs can also be used for ceramic substrates, the diamond film solar cells. Integrated circuit manufacturing, the
stepper projection lithography mask defect-free version required, however, highly integrated circuit manufacturing Mask defects inevitably occur. Defects in two forms: a non-transparent material on
the pinhole; first transparent zone in the black spots. Laser-repair mask with the mask when the first edition version of the graphics video signals with CAD data in the database compared
to determine the type and location of defects, laser repair system to accept the information, the laser focus point in excess of the chromium, so that vaporization, which removed the black spots.
About 70-80% of the CO2 laser for cutting, about 70% of the YAG laser for the electronics industry. In addition, according to statistics, in 1995, Japan has so far set up 1,500 laser
processing station. Recent years, at an annual rate of new homes increased 200-300. Japan began in Ar laser retinal laser coagulation of medical, surgical carbon dioxide laser knife, medical Nd:
YAG laser endoscopy ushered in the first medical laser thermal energy generation. The better quality of laser pointer will attract more customers of laser pointer .
With the advances in laser technology, laser therapy was born chemical efficiency, opening up the broad road of medical laser, Today, Japan are all in the medical field of laser applications.
Japan's use of Nd: YAG SHG laser (532nm) of medical lasers, the fundamental power of 60W, tone harmonic power of about 20W, through the KTP wavelength conversion has been widely used in health
care. Er: YAG laser light compared with the 2.94-micron to 10.6 micron carbon dioxide laser is more susceptible to water, Ca, P, etc. are absorbed, used for cutting, removal of more water body
incision of soft tissue and bone, the performance is much better than carbon dioxide laser knife . As can be fiber optic, in the future, if the 3-micron fiber optical power with the stability of
the successful development of the affected area will be used for non-body cavity incision surgery. In addition, rare earth elements Ho: YAG laser has also been started.
Thursday, January 24, 2013
Main functions of green laser pointer will be introduced with slide
Main functions of green laser pointer will be introduced with slide.
They can both improve the hardness, wear resistance and high temperature red hardness performance of the products significantly improve the life of the product, but also greatly reduce the consumption of precious materials, thereby reducing the cost of the product. Mold surface to strengthen the surface enhancement technology including physics and chemistry are two ways they can change the surface chemical composition and organizational structure to improve the mechanical properties and physical and chemical properties of the surface also play a protective role of the surface material. Surface modification technology of high-energy beam heat source electron beam surface modification of the application of the focusing coil and the deflection coil, electron beam processing technology is more convenient in use, can be more flexible to adjust the heating area, the heating zone and the surface energy density, and electronic beam energy and a higher utilization rate can reach 95%. Electron beam in the material surface to the range of mm. Main functions of green laser pointer should be contained in the working instruction.
Using electron beam heating of the surface of the material to reach a desired temperature or the material melting of the material surface modification. And suitable for local surface modification, the hardness of the surface layer, the modified depth of heating and cooling rates can be controlled. At the same time, no special cooling device can get enough cooling rate. No matter how complex the shape of the part, who can be observed in the region can be electron beam surface modification. The surface modification of superhard compounds in the surface coating extremely one or more layers of superhard compounds. Coating material Tic, NbC, AL3O2, twisted film thickness change with the painted four material types, the shape of the workpiece, and other factors, generally in the range of 3-5um. Besides, green laser pointer can serve as USB flash disks.
The most important feature of this technology is coated high hardness, high melting point. The implementation of superhard compound surface coated He chemical vapor deposition (CVD), physical vapor deposition (PVD). Molten salt dip (TD) Several.
They can both improve the hardness, wear resistance and high temperature red hardness performance of the products significantly improve the life of the product, but also greatly reduce the consumption of precious materials, thereby reducing the cost of the product. Mold surface to strengthen the surface enhancement technology including physics and chemistry are two ways they can change the surface chemical composition and organizational structure to improve the mechanical properties and physical and chemical properties of the surface also play a protective role of the surface material. Surface modification technology of high-energy beam heat source electron beam surface modification of the application of the focusing coil and the deflection coil, electron beam processing technology is more convenient in use, can be more flexible to adjust the heating area, the heating zone and the surface energy density, and electronic beam energy and a higher utilization rate can reach 95%. Electron beam in the material surface to the range of mm. Main functions of green laser pointer should be contained in the working instruction.
Using electron beam heating of the surface of the material to reach a desired temperature or the material melting of the material surface modification. And suitable for local surface modification, the hardness of the surface layer, the modified depth of heating and cooling rates can be controlled. At the same time, no special cooling device can get enough cooling rate. No matter how complex the shape of the part, who can be observed in the region can be electron beam surface modification. The surface modification of superhard compounds in the surface coating extremely one or more layers of superhard compounds. Coating material Tic, NbC, AL3O2, twisted film thickness change with the painted four material types, the shape of the workpiece, and other factors, generally in the range of 3-5um. Besides, green laser pointer can serve as USB flash disks.
The most important feature of this technology is coated high hardness, high melting point. The implementation of superhard compound surface coated He chemical vapor deposition (CVD), physical vapor deposition (PVD). Molten salt dip (TD) Several.
Tuesday, January 22, 2013
Laser cladding and alloying technology for a variety
Place the laser light of green laser pointer in the tall building or the scenery zone on the top of mountain and so
on.
If you subtract 0.04 ~ 0.05mm original backlash, the ring slot maximum amount of wear of only 0.07mm. Therefore, the strengthening of the laser surface alloying for aluminum alloy is very
effective. Laser cladding and alloying technology for a variety of large-scale shaft parts such as motor and generator set rotor, a variety of molds, rollers, large crankshaft and connecting rod
parts surface hardening and restoration. Alloy, copper alloy workpiece laser cladding. Examples of laser cladding applications: laser cladding repair long 5000mm, roll diameter of the Φ500mm the
large stainless steel roller journal, restored to the long axis of a straight line tolerance is only 0.03mm, the laser cladding repair almost does not cause deformation of the workpiece. The
magical and wonderful beauty of the laser light of green laser pointer can be enjoyed in the range of several miles.Portable receivers of green laser pointer are specially designed for personal
users
Laser surface treatment technologies and applications. Surface technology disciplines means of diversification, a wide range of functionality and practicality of a strong and great efficiency,
laser technology in surface treatment are fully utilized, and play a huge role. The laser technology is the 1960s, the most important scientific and technological achievements, it appears, almost
the entire development of technologies has played a major reform and promote the role. Laser with its high brightness, good direction, good monochromaticity, coherence and unique optical
properties with a number of scientific technology combine to form more than one application.Lead to self-insult off, hot and cold conduction
remove energy resulting rapid cooling of the surface layer and austenite transformation to martensite transformation process. The laser hardening of the basic objective is to improve the wear
resistance. Wear reduction is higher than the hardness of the wear media parts of the surface hardness after laser hardening.
on.
If you subtract 0.04 ~ 0.05mm original backlash, the ring slot maximum amount of wear of only 0.07mm. Therefore, the strengthening of the laser surface alloying for aluminum alloy is very
effective. Laser cladding and alloying technology for a variety of large-scale shaft parts such as motor and generator set rotor, a variety of molds, rollers, large crankshaft and connecting rod
parts surface hardening and restoration. Alloy, copper alloy workpiece laser cladding. Examples of laser cladding applications: laser cladding repair long 5000mm, roll diameter of the Φ500mm the
large stainless steel roller journal, restored to the long axis of a straight line tolerance is only 0.03mm, the laser cladding repair almost does not cause deformation of the workpiece. The
magical and wonderful beauty of the laser light of green laser pointer can be enjoyed in the range of several miles.Portable receivers of green laser pointer are specially designed for personal
users
Laser surface treatment technologies and applications. Surface technology disciplines means of diversification, a wide range of functionality and practicality of a strong and great efficiency,
laser technology in surface treatment are fully utilized, and play a huge role. The laser technology is the 1960s, the most important scientific and technological achievements, it appears, almost
the entire development of technologies has played a major reform and promote the role. Laser with its high brightness, good direction, good monochromaticity, coherence and unique optical
properties with a number of scientific technology combine to form more than one application.Lead to self-insult off, hot and cold conduction
remove energy resulting rapid cooling of the surface layer and austenite transformation to martensite transformation process. The laser hardening of the basic objective is to improve the wear
resistance. Wear reduction is higher than the hardness of the wear media parts of the surface hardness after laser hardening.
Monday, January 21, 2013
green laser pointer can lighten the balloon
green laser pointer can lighten the balloon.
The TCMarshall and others a strong pump field 1 ~ 3mm band free-electron laser amplifier experiment, to successfully generate several megawatts of power of the laser [3]. Despite the power and
efficiency of these earlier principle experiments are very low, but the potential characteristics and advantages of the free-electron laser, was soon subject to the attention of scientists to
promote the free-electron laser in the world within the experimental work carried out . With the early experimental work carried out at the same time, a variety of theoretical studies have been
published. In March 1983, U.S. President Ronald Reagan proposed the Strategic Defense Initiative "(Strategic Defence Initiative, referred to as SDI plan). The high power green laser pointer will be
manufactured in the torch shape.
Due to a series of advantages of the free-electron laser as part of the main candidates for which ground-based laser weapon. Thus from 1985 onwards, the development of free-electron laser has
obviously been "SDI" plan and promote the world free-electron laser research boom. France, Russia, Britain, Germany, China, Japan, the Netherlands and other countries have carried out work in this
area [10]. The free-electron laser as a family member of the laser, from the advent of the beginning of its unique features attracted the attention of the people. In the field of civil and military
applications of communications, radar, plasma heating, laser spectroscopy has an attractive prospect. Characteristics of the free-electron laser. So many choices of green laser pointer can be
provided for customer.
The free-electron laser is the birth of the last century since the 1970s a new type of laser device is the forefront of one of the world's high-tech science and technology in the laser arena, the
free-electron laser with ordinary laser monochrome and directional coherence The high brightness compared to the outside, but also has the following features: adjustable frequency, wide tuning
range. The free-electron laser is a monochromatic coherent light, the wavelength varies with the electron beam energy, the electron beam energy of the electron accelerator output can easily be
adjusted considerably within the spectrum of the free-electron laser to far-infrared across to the hard X-rays, while the vast majority of the laser can only be fixed to the wavelength.
The TCMarshall and others a strong pump field 1 ~ 3mm band free-electron laser amplifier experiment, to successfully generate several megawatts of power of the laser [3]. Despite the power and
efficiency of these earlier principle experiments are very low, but the potential characteristics and advantages of the free-electron laser, was soon subject to the attention of scientists to
promote the free-electron laser in the world within the experimental work carried out . With the early experimental work carried out at the same time, a variety of theoretical studies have been
published. In March 1983, U.S. President Ronald Reagan proposed the Strategic Defense Initiative "(Strategic Defence Initiative, referred to as SDI plan). The high power green laser pointer will be
manufactured in the torch shape.
Due to a series of advantages of the free-electron laser as part of the main candidates for which ground-based laser weapon. Thus from 1985 onwards, the development of free-electron laser has
obviously been "SDI" plan and promote the world free-electron laser research boom. France, Russia, Britain, Germany, China, Japan, the Netherlands and other countries have carried out work in this
area [10]. The free-electron laser as a family member of the laser, from the advent of the beginning of its unique features attracted the attention of the people. In the field of civil and military
applications of communications, radar, plasma heating, laser spectroscopy has an attractive prospect. Characteristics of the free-electron laser. So many choices of green laser pointer can be
provided for customer.
The free-electron laser is the birth of the last century since the 1970s a new type of laser device is the forefront of one of the world's high-tech science and technology in the laser arena, the
free-electron laser with ordinary laser monochrome and directional coherence The high brightness compared to the outside, but also has the following features: adjustable frequency, wide tuning
range. The free-electron laser is a monochromatic coherent light, the wavelength varies with the electron beam energy, the electron beam energy of the electron accelerator output can easily be
adjusted considerably within the spectrum of the free-electron laser to far-infrared across to the hard X-rays, while the vast majority of the laser can only be fixed to the wavelength.
Sunday, January 20, 2013
The advanced laser technology will be adopted
The advanced laser technology will be adopted for green laser pointer .
The laser can play a significant role in minimally invasive surgical and interventional treatment of two areas. Therefore, the cross-integration of minimally invasive laser and medical imaging will form the advanced medical technology innovation hot spots in the new century. The laser has a very unique advantage in the field of minimally invasive treatment, changing the traditional surgical procedures, laser technology provides advanced technology platform for minimally invasive surgical treatment. Monochromatic laser can achieve the selective treatment of light, different wavelengths are different from the role of lesions in target tissues, has the function of the directed target treatment more accurate treatment, the damage is smaller, safer surgery. Precise control of laser energy and power that can be digitized.The light emitted from the laser is highly monochromatic, high brightness, a one-way, coherence characteristics. The laser's unique nature, a variety of clinical applications. The laser medium determines the wavelength of the emission of the laser. The laser's wavelength range is narrow, its precisely reach the target in the organization, had little effect on the adjacent tissue.The clinical significance of the scalpel design is to achieve a true laser scalpel, the surgeon is free to the organization cutting, or vaporization. So far, Biolitec red laser in European urology centers has reached more than 60% of the share. Reviewed by the FDA in the United States in 2007. green laser pointer can also be used as lights dispersing in all directions.
The cantilevered laser cutting machine features: cantilevered laser cutting machine features: independent property rights by the finite element and dynamic analysis and simulation of high strength cast aluminum alloy beams (Y axis), to achieve strength, rigidity and servo drag deceleration and NC The high level of system matching. The 2.X axis imports of ultra-high precision and high torque gearbox, which greatly improves the dynamic performance, to ensure the accuracy of long-term stability.
The laser can play a significant role in minimally invasive surgical and interventional treatment of two areas. Therefore, the cross-integration of minimally invasive laser and medical imaging will form the advanced medical technology innovation hot spots in the new century. The laser has a very unique advantage in the field of minimally invasive treatment, changing the traditional surgical procedures, laser technology provides advanced technology platform for minimally invasive surgical treatment. Monochromatic laser can achieve the selective treatment of light, different wavelengths are different from the role of lesions in target tissues, has the function of the directed target treatment more accurate treatment, the damage is smaller, safer surgery. Precise control of laser energy and power that can be digitized.The light emitted from the laser is highly monochromatic, high brightness, a one-way, coherence characteristics. The laser's unique nature, a variety of clinical applications. The laser medium determines the wavelength of the emission of the laser. The laser's wavelength range is narrow, its precisely reach the target in the organization, had little effect on the adjacent tissue.The clinical significance of the scalpel design is to achieve a true laser scalpel, the surgeon is free to the organization cutting, or vaporization. So far, Biolitec red laser in European urology centers has reached more than 60% of the share. Reviewed by the FDA in the United States in 2007. green laser pointer can also be used as lights dispersing in all directions.
The cantilevered laser cutting machine features: cantilevered laser cutting machine features: independent property rights by the finite element and dynamic analysis and simulation of high strength cast aluminum alloy beams (Y axis), to achieve strength, rigidity and servo drag deceleration and NC The high level of system matching. The 2.X axis imports of ultra-high precision and high torque gearbox, which greatly improves the dynamic performance, to ensure the accuracy of long-term stability.
Friday, January 18, 2013
green laser pointer with key chain or key ring
green laser pointer with key chain or key ring is special in design
Feedback devices constitute a resonant cavity, the excitation of the pump light, the optical fiber doped with the media generated by stimulated emission, and thus the formation of the laser oscillation output laser. Conventional fiber lasers due to the need to pump light coupled into single-mode fiber core diameter less than 10um, and thus the coupling efficiency is low, limiting the output power of fiber lasers. However, in most applications require more than a watt-level output power plus the limit of the optical fiber production technology, the pump laser and optical technology, the development of fiber lasers have been relatively slow. The fiber laser is currently a hot topic. The ROFIN and TRUMPF to acquisition NUFERN with SPI, the development of fiber laser has been three years. In addition, the pump light is doped with rare earth ions the absorption rate is proportional to the area ratio of the inner cladding and outsourcing layer. Double-clad fiber laser cladding-pumped technology.green laser pointer can be widely used in schools, research institutions, government agencies, intelligence -intensive enterprises, training centers, hospitals, and hotels.This easy to control the light, even after a long-range, but also does not appear the loss of light intensity. These features facilitate the high-intensity laser through fiber optics, focus on a particular small area. According to the laser principles and clinical needs, the scientists have been committed to two major breakthroughs: find the most suitable clinical wavelength and laser output power. Since the 1990s, with the progress of science and the development of laser technology, medical lasers and computer, endoscopy, image analysis, video recording, fluorescence spectroscopy, X-ray and ultrasound technology continue to combine, so that medical laser toward the with the development of high-performance, intelligent, miniaturized and specialist direction. During use of green laser pointer , the customer should pay some attention to the maintenance of the laser pointer.
From the perspective of the development of urology laser applications, the earliest from 1990 neodymium yttrium garnet laser, progressively after holmium laser (1995), the green laser (2000), thulium laser (2003), to the red laser (2007 years) continue to evolve, the laser power from 15W to 30W, 50W, 80W, 100W, up to today's red laser 120W/150W. In fact no matter what laser surgery techniques, the speed of surgery, and postoperative results are determined by the physical principle of the laser with human tissue, different laser wavelengths for the organization of the human body's water molecules, as well as tissue containing hemoglobin absorption efficiency differences in the effectiveness of its physical map is as follows.
Feedback devices constitute a resonant cavity, the excitation of the pump light, the optical fiber doped with the media generated by stimulated emission, and thus the formation of the laser oscillation output laser. Conventional fiber lasers due to the need to pump light coupled into single-mode fiber core diameter less than 10um, and thus the coupling efficiency is low, limiting the output power of fiber lasers. However, in most applications require more than a watt-level output power plus the limit of the optical fiber production technology, the pump laser and optical technology, the development of fiber lasers have been relatively slow. The fiber laser is currently a hot topic. The ROFIN and TRUMPF to acquisition NUFERN with SPI, the development of fiber laser has been three years. In addition, the pump light is doped with rare earth ions the absorption rate is proportional to the area ratio of the inner cladding and outsourcing layer. Double-clad fiber laser cladding-pumped technology.green laser pointer can be widely used in schools, research institutions, government agencies, intelligence -intensive enterprises, training centers, hospitals, and hotels.This easy to control the light, even after a long-range, but also does not appear the loss of light intensity. These features facilitate the high-intensity laser through fiber optics, focus on a particular small area. According to the laser principles and clinical needs, the scientists have been committed to two major breakthroughs: find the most suitable clinical wavelength and laser output power. Since the 1990s, with the progress of science and the development of laser technology, medical lasers and computer, endoscopy, image analysis, video recording, fluorescence spectroscopy, X-ray and ultrasound technology continue to combine, so that medical laser toward the with the development of high-performance, intelligent, miniaturized and specialist direction. During use of green laser pointer , the customer should pay some attention to the maintenance of the laser pointer.
From the perspective of the development of urology laser applications, the earliest from 1990 neodymium yttrium garnet laser, progressively after holmium laser (1995), the green laser (2000), thulium laser (2003), to the red laser (2007 years) continue to evolve, the laser power from 15W to 30W, 50W, 80W, 100W, up to today's red laser 120W/150W. In fact no matter what laser surgery techniques, the speed of surgery, and postoperative results are determined by the physical principle of the laser with human tissue, different laser wavelengths for the organization of the human body's water molecules, as well as tissue containing hemoglobin absorption efficiency differences in the effectiveness of its physical map is as follows.
Thursday, January 10, 2013
green laser pointer can be sold on the website
green laser pointer can be sold on the website.
Select the 50% duty cycle square wave modulation and the use of sine wave (or triangular wave) modulation output as shown in Figure 4-4 shows the electrical pulse shape, pulse rise time is less than the fall time, this is because when modulation frequency is high, the cycle of the modulation signal is less than the chip pulse modulation response of the constant current source rise time and fall time and shown in Figure 4-3, this time, the output pulse is mainly affected by the modulation of the chip itself, affect the response time, while little effect of the modulated signal waveform relaxation oscillation does not appear. The modulation PIN21 when three different waveform modulation the output diagram. Square wave frequency modulation output diagram. This design uses a constant current source driver chip HY6340 as the core components of the power supply.temperature, increases the threshold current of semiconductor lasers; the temperature is increased to 25 degrees, the threshold current increase twice as large.
The slow start of the LD laser power supply circuit. LD laser power arbitrary opening and closing without damage, you can arrange for a slow start circuit LD laser power supply circuit, so that the power to open and close the forward current of the LD laser iF can slow over time, changes, thus ensuring the LD The laser does not damage the power is turned on and off. The slow start circuit schematic shown in Figure 1. The figure, Vi is the input DC voltage stability, K, closed the power is turned on Vi access instantly. RC charging circuit, with the rise of charge voltage on the capacitor C (negative), the PNP type transistor T1 deadline to enter the conduction state until saturated conduction. The selection of green laser pointer is based on the actual needs and real requirements.Assume that Vi is 24V, the T2 tube, beta = 100, and suddenly Figure T1, the T2 tube turn-on voltage of the VBE (on), and L the pressure drop, the choice of Rs = 2.4kΩ, RW, potentiometer 0 ~ 5.6kΩ (adjustable resistor). LD current control system of the current is adjustable. In the actual laser blood therapy instrument, if you use a variable resistor to adjust the output current of the iF, there will be may be due to the frequent rotation of the potentiometer and some point of contact from the slip between the film and the resistance of the wire, so that the variable resistor circuit point in the adjustment process.
Select the 50% duty cycle square wave modulation and the use of sine wave (or triangular wave) modulation output as shown in Figure 4-4 shows the electrical pulse shape, pulse rise time is less than the fall time, this is because when modulation frequency is high, the cycle of the modulation signal is less than the chip pulse modulation response of the constant current source rise time and fall time and shown in Figure 4-3, this time, the output pulse is mainly affected by the modulation of the chip itself, affect the response time, while little effect of the modulated signal waveform relaxation oscillation does not appear. The modulation PIN21 when three different waveform modulation the output diagram. Square wave frequency modulation output diagram. This design uses a constant current source driver chip HY6340 as the core components of the power supply.temperature, increases the threshold current of semiconductor lasers; the temperature is increased to 25 degrees, the threshold current increase twice as large.
The slow start of the LD laser power supply circuit. LD laser power arbitrary opening and closing without damage, you can arrange for a slow start circuit LD laser power supply circuit, so that the power to open and close the forward current of the LD laser iF can slow over time, changes, thus ensuring the LD The laser does not damage the power is turned on and off. The slow start circuit schematic shown in Figure 1. The figure, Vi is the input DC voltage stability, K, closed the power is turned on Vi access instantly. RC charging circuit, with the rise of charge voltage on the capacitor C (negative), the PNP type transistor T1 deadline to enter the conduction state until saturated conduction. The selection of green laser pointer is based on the actual needs and real requirements.Assume that Vi is 24V, the T2 tube, beta = 100, and suddenly Figure T1, the T2 tube turn-on voltage of the VBE (on), and L the pressure drop, the choice of Rs = 2.4kΩ, RW, potentiometer 0 ~ 5.6kΩ (adjustable resistor). LD current control system of the current is adjustable. In the actual laser blood therapy instrument, if you use a variable resistor to adjust the output current of the iF, there will be may be due to the frequent rotation of the potentiometer and some point of contact from the slip between the film and the resistance of the wire, so that the variable resistor circuit point in the adjustment process.
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