Introduction to the development history of handheld laser rangefinders
The laser rangefinder is an instrument that uses laser to accurately measure the distance of the target. When the laser range finder is working, it emits a very thin beam of laser range finder light to the target, and the photoelectric element receives the laser beam reflected by the target. The distance to the target. If the laser is emitted continuously, the measurement range can reach about 40 kilometers, and it can work day and night. If the laser is emitted in pulses, the absolute accuracy is generally low, but it can achieve good relative accuracy when used for long-distance measurements. The world's first laser was successfully developed in 1960 by Maiman, a scientist from the Hughes Aircraft Company of the United States. The U.S. military soon launched research on military laser devices on this basis. In 1961, the first military laser range finder passed the demonstration test of the US military, after which the laser range finder soon entered the practical complex. The laser rangefinder is light in weight, small in size, easy to operate, fast and accurate, and its error is only one-fifth to several hundredths of other optical rangefinders, so it is widely used in terrain measurement, battlefield measurement, tank , Aircraft, ships and artillery to the target range, measuring the altitude of clouds, aircraft, missiles and artificial satellites, etc. It is an important technical equipment to improve the accuracy of high tanks, aircraft, ships and artillery. Due to the continuous reduction in the price of laser range finders, the industry has gradually begun to use laser range finders. At home and abroad, a batch of new miniature rangefinders with the advantages of fast ranging, small size and reliable performance have emerged, which can be widely used in industrial measurement and control, mines, ports and other fields. Main classification One-dimensional laser rangefinder is used for distance measurement and positioning; two-dimensional laser rangefinder (Scanning Laser Rangefinder) is used for contour measurement, positioning, area monitoring and other fields; three-dimensional laser rangefinder (3D Laser Rangefinder) is used for 3D profile measurement, 3D space positioning and other fields.
