laser rangefinderA laser rangefinder telescope is a type of laser rangefinder, perhaps called a rangefinder telescope. Another type of short interval rangefinder is called a handheld rangefinder. Hand-held rangefinders generally have a measuring interval of 0-200 meters, and are mostly used indoors. The measurement interval of the telescope rangefinder is generally 6-3000 meters.
There are two measurement principles of laser rangefinder: pulse type and phase type. The pulse type uses the known speed of light to measure the time between two points to calculate the interval. Relatively speaking, the measurement is farther, but the accuracy can only reach meters. It is mostly used to measure buildings or large-scale remote distance targets. The phase type uses a high-frequency electric oscillation with a period of T to amplitude modulate the emitting light source of the rangefinder, so that the light intensity changes periodically with the frequency of the electric oscillation. The modulated light waves are transmitted back and forth over the interval to be measured, so that the emitted light and the received light at the same instant have a phase difference Δφ. Based on this indirect calculation, the interval measurement can usually reach the millimeter level, but the measurement range is relatively short. The handheld rangefinder is used Phase-type principle measurement. It is mostly used indoors or where high-precision measurement is required.
Laser rangefinder telescope Wang Wenshengyi This is also a telescope, but a telescope with laser rangefinder. Therefore, the laser rangefinder telescope is divided into monocular rangefinder and binocular rangefinder. Common specifications on the market now include 6x optical zoom, 7x optical zoom, and measurement intervals of 600 meters, 1000 meters, 1500 meters, 2000 meters, 3000 meters, etc. The appropriate type can be selected according to the needs.