Application Overview of Laser Rangefinder

A laser rangefinder is an instrument that uses laser to accurately measure the distance to a target. When working, the laser rangefinder emits a very thin laser beam to the target, and the photoelectric element receives the laser beam reflected by the target. The timer measures the time from the emission to the reception of the laser beam, and calculates the distance from the observer to the target.

Application of Laser Rangefinder for Electrical Testing Instruments

Laser rangefinder is an electrical test instrument that uses laser to accurately measure the distance to the target. Laser rangefinder has the advantages of accurate measurement, flexible use, small size, and wide application range. It has certain applications in industrial measurement and control, mining, ports and other fields.

When working, the laser rangefinder emits a very thin beam of laser towards the target. The laser beam reflected by the target is received by the photoelectric element. The timer measures the time from the emission to the reception of the laser beam, and calculates the distance from the observer to the target.

If the laser is emitted continuously, the measurement range can reach about 40 kilometers, and it can operate day and night. If the laser is emitted in pulses, the absolute accuracy is generally low, but it can achieve good relative accuracy for long-distance measurement.

It is known that the world's first laser was successfully developed by Maiman, a scientist at Hughes Aircraft Company in the United States in 1960. The US military soon began to study military laser devices based on this. In 1961, the first military laser rangefinder passed the US military demonstration test, and laser rangefinders soon entered the practical joint venture.

As the price of laser rangefinders continues to drop, they are gradually being used in industry. A number of new miniature rangefinders with the advantages of fast distance measurement, small size, and reliable performance have emerged at home and abroad, and can be widely used in industrial measurement and control, mining, ports and other fields.

Laser is a new technology developed in the 1960s. It is a light with very pure color, highly concentrated energy and good directionality. Laser rangefinder is an instrument that uses laser to measure distance. Its working principle is very simple: the distance is measured by measuring the time from the start of laser emission to the time when the laser is reflected from the target. For example, if a laser rangefinder is used to measure the distance to the moon, if the time from the start of laser emission to the time when the laser is reflected from the moon is measured to be 2.56 seconds, the one-way time of the laser emission to the moon is equal to 1.28 seconds, and the speed of the laser is the speed of light, which is equal to 300,000 kilometers per second. Therefore, the measured distance of the moon from the earth is the product of the one-way time and the speed of light, that is, 384,000 kilometers. In order to emit and receive lasers and perform timing, the laser rangefinder consists of a laser transmitter, a receiver, a clock oscillator and a distance counter.

Laser rangefinders can also be used to track and measure the distance to artificial satellites, measure the flight altitude of aircraft, aim and measure the distance to targets, as well as conduct terrain mapping and surveying, etc.