The relationship between laser and camera
The laser transmitter shoots the visible red laser light to the surface of the object through the lens. The green laser pointer reflected by the object passes through the receiver lens and is received by the internal CCD linear camera. According to different distances, the CCD linear camera can "see" this at different angles. light spot. Based on the known distance between the laser and the camera based on this angle, the digital signal processor can calculate the distance between the sensor and the measured object. Do not use laser pointers to illuminate vehicles such as airplanes, cars, and bicycles!Don't shoot other people's houses! You should avoid internal conflicts because it will affect you. Laser diodes have a wide range of applications. Whether it is analytical equipment for life sciences, heavy lasers for reconnaissance tasks, seed diodes for material handling systems, or ultra-stable laser diodes for metrology tasks, all of these are correct The choice to make the right choice.
Tags
Light Source
When not using the high power laser pointer, please take out the battery and place it out of reach of children. This is a very useful secret tool, but you need to pay attention to some things when using it. First, drive the light emitter. Especially LEDs have specific voltage requirements, so if they are driven directly, the brightness will quickly decay over time. Therefore, the best thing for LEDs is a stable current circuit. This circuit can adjust the voltage generated by different batteries to the best condition for the LED. The flashlight can realize various lighting functions through the control circuit. It emits different brightness, which can meet the needs of strong light, just right, low light, flicker, SOS rescue signal and so on. Install the battery in the correct direction. We need a laser diode with a coherence length of 1 to 10 m, and the interferogram should remain stable under temperature changes (<0.1 nm/K). We need a collimated Gaussian beam with a power> 80 mW. The detector we use is based on silicon (Si) and is only suitable for wavelengths <1100 nm. In this case, the center wavelength itself and polarization are less important. The coherence length is the distance at which the coherence is significantly attenuated. In fact, it is even related to the time coherence length, but for our purposes, the above definition is sufficient. We use the following formula: Δν = c /πL, where Δν is the bandwidth (or line width), c is the speed of light, and L is the coherence length.
2022-01-06 11:42:19
Your Answer: