laser rangefinder is a use of laser distance measurement instrument. Its basic principle is that to be the object of ranging laser pulse and start time, stop time when receives the reflected light. This period of time that can be converted to the distance between laser and target. Laser range finder can launch multiple laser pulses, through a doppler effect to determine whether the object is away from or near the light source. Since the speed of light is too fast, the instrument is not accurate in measurement at close range. When need the precision is less than a millimeter level, triangulation method is more suitable. Laser rangefinder

introduction

laser rangefinder is to use laser instrument for accurate determination of target distance. Laser range finder at work as a very fine laser to the target, by photoelectric receiving target reflection of laser beam, the timer to determine laser beam from transmitting to receiving time, calculate the distance from the observer to the target.

if the laser is continuous emission, measuring ranges over 40 km, and can work night and day. If the laser pulse is launched, the general accuracy is low, but for distance measurement, can achieve very good relative accuracy.

* laser machine in the world, is by the hughes aircraft company scientists maiman in 1960, the first successful development. The U. S. military will soon on the basis of the conducted research on jun with laser device. 1961, * jun with laser range finder by the U. S. military demonstration test, for since the laser range finder quickly into the practical.

due to the laser rangefinder prices are cut and industry also gradually began to use laser range finder. At home and abroad in a batch of new type of fast in range, small volume, the advantages of reliable performance of the micro range finder, can be widely used in industrial measurement and control, mines, ports and other fields.

laser is a new technology developed in the 60 s. It is a kind of color is very pure, highly centralized energy, directional light very well. Laser rangefinder is a device using laser ranging. Its action principle is simple: by measuring the laser began to launch the laser reflected from the target time to determine the distance. For instance use a laser rangefinder to measure the distance of the moon, if the laser emission from the start time to bounce back from the moon is determined to 2. 56 seconds, one-way time is equal to 1 laser emission to the moon. 28 seconds, and the speed of the laser is the speed of light, is equal to three hundred thousand kilometers per second. Therefore, measured the distance of the moon from the earth is single product of time and the speed of light, which is three hundred and eighty-four thousand kilometers. In order to transmit and receive the laser and timing, laser range finder by laser transmitter, receiver, Zhong Pin oscillator counter, distance, etc.

a laser range finder can also be used for satellite tracking distance measurement, measurement plane flying height, aim at the target range, as well as for topographic mapping, survey, etc.

laser rangefinder USES

laser rangefinder is widely used in topographic survey, field measurement, tanks, planes, ships and guns to target range, measuring the clouds, aircraft, dao and the height of the satellite etc. It is to improve the high tanks, planes, ships and the precision of artillery important technical equipment. Due to the laser rangefinder prices are cut and industry also gradually began to use laser range finder, can be widely used in industrial measurement and control, mines, ports and other fields.