Lasers are divided into energy lasers and information lasers: energy lasers use the high-energy characteristics of lasers, and laser cutters belong to energy laser products; information lasers use the characteristics of laser information carriers or have good information indicating characteristics. The products mainly include laser rangefinders, lasers Communication equipment and laser storage equipment, etc. Laser ranging uses the essence of laser electromagnetic waves: the laser travels at the speed of light in the atmosphere, and the distance between the two can be indirectly measured by measuring the time between the laser and the target and the laser.
