Overview of the Laser Rangefinder Telescope
Laser rangefinder telescopes, or rangefinder telescopes. Another short-range rangefinder is called a handheld rangefinder. Handheld rangefinders generally measure distances from 0 to 200 meters, and are mostly used indoors. The telescopic rangefinder is generally 6-3000 meters away.
The measurement principle of the laser rangefinder has two types: pulse type and phase type. The pulse type uses the known speed of light to measure its travel time between two points to calculate the distance. Relatively speaking, the measurement is farther, but the accuracy can only reach meters. It is mostly used to measure buildings or large long-distance targets. The phase type uses high-frequency electrical oscillation with a period of T to amplitude-modulate the emission light source of the rangefinder, so that the light intensity changes periodically with the frequency of the electrical oscillation. The modulated light wave propagates back and forth over the distance to be measured, so that the emitted light and the received light at the same instant have a phase difference Δφ. Based on this, it is indirectly calculated that the distance measurement can usually reach the millimeter level, but the measurement range is relatively short. Phase principle measurement. It is mostly used in indoor or places where high precision measurement is required.
As the name suggests, the laser rangefinder telescope is also a telescope, but it is a telescope with laser ranging. Therefore, the laser rangefinder telescope is divided into monocular rangefinder and binocular rangefinder. At present, the common specifications on the market are 6x optical zoom, 7x optical zoom, measuring distances of 600 meters, 1000 meters, 1500 meters, 2000 meters, 3000 meters and other models, you can choose the appropriate model according to your needs.
The price of monocular rangefinders generally ranges from hundreds to thousands, while binocular rangefinders generally cost tens of thousands.
Domestic brands are relatively cheap and cost-effective. Foreign brands are well-known, but their prices are also high, and many of them are domestic OEM production. Attention should be paid when choosing. Now domestic brands are no worse than foreign brands in terms of quality control and workmanship.
