The principle of laser rangefinder module is to use the emission and reception of laser to measure the distance between the object and the module. Its basic principles are as follows:
1. Emitting laser: The laser transmitter emits a monochromatic, unidirectional, coherent laser beam. Semiconductor lasers with a small divergence angle and stable power are usually used.
2. Emitting laser beam to irradiate the object: The laser beam irradiates the object to be measured and is reflected back by the surface of the object.
3. Receiving laser: The receiver of the ranging module receives the laser signal reflected back by the object.
4. Received signal processing: The received laser signal is converted into an electrical signal through the photodiode or photoresistor inside the module.
5. Signal measurement and calculation: The received electrical signal is measured in voltage or frequency, and the distance between the object and the module is obtained by calculation, processing, etc.
6. Output distance data: The measured distance is transmitted to external devices such as microcontrollers, computers, etc. through the output interface of the module.
However, laser ranging modules may also include additional functional modules, such as temperature compensation, optical power control, signal filtering, etc., to improve the accuracy and performance of ranging. Different types of laser ranging modules may have some differences and subtle changes, but the basic principles are roughly the same.
With expertise and cutting-edge technology, JioptiK can provide reliable laser ranging solutions from 1 to 35 kilometres, covering 905nm semiconductor laser module, 1064nm YAG laser module, 1535nm Er glass laser module, and 1570nm OPO laser module to satisfy customers' specific needs.
For more information on our products, please contact Jioptik.
