Laser rangefinder is an instrument that uses laser to accurately measure the distance between targets. The laser rangefinder emits a very thin laser beam to the target during operation, and the photoelectric element receives the laser beam reflected by the target. The timer measures the time when the laser beam is emitted to receive it, and calculates the interval from the observer to the target.
If the laser is fired continuously, the measuring range can reach about 40 kilometers, and it can be operated day and night. If the laser is pulsed, the accuracy is generally low, but for long-distance measurement, it can reach a good relative accuracy.
The laser rangefinder is light in weight, small in size, simple to operate, fast and accurate, and its error is only one-fifth to one-hundredth of other optical rangefinders, so it is widely used in terrain measurement, battlefield measurement, and tank , The distance measurement of aircraft, ships and artillery targets, measuring the height of clouds, aircraft, missiles and satellites. It is an important technical equipment to improve the accuracy of high tanks, aircraft, ships and artillery. As the price of laser rangefinders continues to drop, the industry has gradually begun to use laser rangefinders. A number of new miniature rangefinders with the advantages of fast ranging, small size, and reliable functions have emerged at home and abroad, which can be widely used in industrial measurement and control, mines, ports and other fields.
