Laser distance measuring uses laser as the 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 for Pulse laser ranging.
