laser distance measuring

Laser distance measuring uses a laser as a light source for distance measurement. According to the laser working mode, it is divided into continuous laser and pulsed laser. Gas lasers such as helium-neon, argon ion, krypton-cadmium, etc. work in a continuous output state for phase laser ranging; double heterogeneous gallium arsenide semiconductor lasers for infrared ranging; solid lasers such as ruby and neodymium glass are used for Pulse laser ranging. Compared with photoelectric rangefinders, laser rangefinders can not only work day and night, but also improve the accuracy of range finding due to the characteristics of laser monochromaticity and strong directionality, coupled with the semiconductor integration of electronic circuits.