Principles and characteristics of high-precision telescope handheld laser rangefinder
High-precision telescope handheld laser rangefinder product principle:
Laser rangefinders generally use two methods to measure distance: pulse method and phase method. The process of pulse distance measurement is as follows: the rangefinder emits the laser; the laser is reflected by the object to be measured and then received by the rangefinder, and the rangefinder records the round-trip time of the laser at the same time. Half the product of the speed of light and the round-trip time is the distance between the rangefinder and the object being measured. The accuracy of distance measurement by pulse method is generally around +/-1 meter. In addition, the measurement blind zone of this type of rangefinder is generally about 5-15 meters.
High-precision telescope handheld laser rangefinder product features:
This instrument operates on semiconductor lasers with wavelengths of 905 nm and 1540 nm. For 905 nm and 1540 nm laser rangefinders, we call them "safe". YAG laser operating at 1064 nm. The wavelength of 1064 nanometers is harmful to human skin and eyes. Especially if the eyes are accidentally exposed to the laser with a wavelength of 1064 nanometers, the damage to the eyes may be fatal. Therefore, in foreign countries, 1064-nanometer lasers are completely banned in handheld laser rangefinders. In China, some manufacturers also produce 1064 nm laser rangefinders. As for the 1064-nanometer laser rangefinder, because it is potentially harmful to the human body, we call it "unsafe".
