Do you know which band of filters are used in the laser rangefinder?
The laser range finder is an instrument that uses laser to accurately measure the distance of the target. When the laser range finder is working, it 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 launch to the reception of the laser beam, and calculates the distance from the observer to the target. The laser range finder is light in weight, small in size, easy to operate, fast and accurate, and its error is only one-fifth to several hundredths of other optical range finders.
Laser rangefinders are divided into handheld laser rangefinders and telescopic laser rangefinders. 1. Handheld laser rangefinder: the measurement distance is generally within 200 meters, and the accuracy is about 2mm. This is the most widely used laser rangefinder at present. Functionally, in addition to measuring the distance, it can also generally calculate the volume of the measured object. 2. Cloud service laser rangefinder: transmit the measurement data on the laser rangefinder to mobile terminals such as tablet computers in real time through Bluetooth Meterbox; through wifi networking, the data can be transmitted to the cloud server, and the remote construction partners can share the measurement in real time Data, such as iLDM-150. 3. Telescope laser rangefinder: the measurement distance is relatively long, generally about 600-3000 meters, but the accuracy is relatively low, and the accuracy is generally about 1 meter. The main application range is long-distance measurement in the field. One-dimensional laser range finder is used for distance measurement and positioning; laser range finder and two-dimensional laser range finder (Scanning Laser Range finder) are used for contour measurement, positioning, area identification and other fields; three-dimensional laser range finder (3D Laser Range finder) Range finder) is used in three-dimensional contour measurement, three-dimensional space positioning and other fields. Telescopic laser rangefinders have relatively low precision, generally around 1 meter, and some optical magnifications can reach 6 to 9 times.
The main application range is field construction, laser rangefinder environmental survey, establishment of aircraft warfare, and other situations that require long-distance field measurement. Phase-type laser rangefinder The phase-type laser rangefinder uses the frequency of the electric band to modulate the amplitude of the laser beam and measure the phase delay generated by the modulated light going back and forth to the measuring line once, and then convert the phase delay according to the wavelength of the modulated light represents the distance. That is, the indirect method is used to measure the time required for the light to travel through the survey line. Phase laser rangefinders are generally used in precision distance measurement. Due to its high precision, it is generally a laser range finder at the millimeter level. In order to effectively reflect the signal and limit the measured target to a specific point commensurate with the accuracy of the instrument, this range finder is equipped with a so-called Reflectors for cooperative targets.
The wavelength bands of semiconductor lasers that have been developed and put on the market are 370nm, 390nm, 405nm, 430nm, 480nm, 635nm, 650nm, 670nm, 780nm, 808nm, 850nm, 980nm, 1310nm, 1550nm, etc., of which 1310nm and 1550nm are mainly used for optical fiber communication field. 405nm - 670nm is the visible light band, 780nm - 1550nm is the light band, 390nm - 370nm is the ultraviolet light band. High-tech products and professional technology lead the trend of the ranging industry. The following products produced by our company are applied on the laser range finder: 635nm reflector 780nm reflector 905nm reflector 635nm narrowband filter 780nm narrowband filter 905nm narrowband filter
