Abstract: Laser rangefinder is a measuring instrument using laser ranging, mainly used in military and industrial fields. It has the advantages of fast measurement and accurate measurement, but it also has the disadvantages of being afraid of water and dust. Accuracy is a very important parameter when using a laser rangefinder. According to different measurement methods, the accuracy of the laser rangefinder will also be different, generally up to ±1mm, a good laser rangefinder has higher accuracy. Let's take a look at what a laser rangefinder is.

1. What is a laser rangefinder?

A laser rangefinder is an instrument that uses laser modulation parameters to measure the distance of a target. It was invented by the American Hughes Aircraft Company scientist Maiman in 1960 and began to be used in the military field in 1961. With the continuous decline in the price of laser rangefinders, laser rangefinders are gradually used in the industrial field.

With the development of laser rangefinders, it is widely used in terrain measurement, battlefield measurement, tanks, aircraft, ships and artillery ranging, cloud measurement, aircraft, missiles and satellite heights and other major fields; industry is mainly used for industrial measurement and control, mining , ports and other fields.

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Second, the accuracy of the laser rangefinder is generally how much.

A laser rangefinder is a measurement tool, and accuracy is an important performance indicator. The measurement accuracy of the laser rangefinder generally refers to the specified measurement error based on the ordinary measurement environment. Are laser rangefinders accurate?

There are two ways to use the laser rangefinder: the pulse method and the phase method. Pulse-emitting laser rangefinders generally have low absolute accuracy, but long-range measurements can achieve good relative accuracy; 1mm.

It should be noted that the accuracy error of the laser rangefinder is not proportional to the measurement distance, the entire distance is the same, but if the distance is too long, the error will increase by ±0.5mm/100m.

Third, the advantages and disadvantages of laser rangefinders.

1. The advantages of laser rangefinders.

The sensor of the laser rangefinder is just a light spot, which can be used for small holes or objects in the distance, and the laser response time is very fast, which can be used for fast measurement, which is not affected by the target material, color, tilt, etc.

2. Disadvantages of laser rangefinders.

If there is water or ash on the surface of the laser rangefinder, the light will be sent back, resulting in false signals; and the laser is harmful to the human eye, and it is dangerous to use.