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.