Laser range finder and laser ranging method

Abstract

The invention relates to a laser range finder and a laser ranging method. The laser range finder comprises a supporting assembly and a distance measuring main body; the distance measuring main body isprovided with a laser head capable of emitting laser beams; one end of the laser head is rotatably mounted at the supporting assembly; a predetermined angle is formed between the supporting assemblyand a connection line of a measurement starting point and a measurement end point; the distance measuring main body rotates with a connection point of the distance measuring main body and the supporting assembly adopted as a rotation axis; and the laser range finder carries out blocking object-free distance measurement when the distance measuring main body rotates relative to the supporting assembly such that the laser head is aligned with the measurement end point. With the above laser range finder adopted, a distance L between the measurement starting point and the measurement end point of ameasured object can be obtained according to a sine and cosine theorem, so that the length of a measured object with no blocking objects can be measured conveniently when the distance of a measured object with an blocking object is measured, and therefore, the use range of the laser range finder is wide, and convenience can be brought to people's lives.

Description

technical field [0001] The invention relates to the field of laser distance measuring devices, in particular to a laser distance measuring instrument and a laser distance measuring method. Background technique [0002] A laser rangefinder is an instrument that uses a certain parameter of a modulated laser to measure the distance to a target. According to the distance measuring method, it is divided into phase method range finder and pulse method range finder. The pulse laser range finder emits a beam or a series of short pulse laser beams to the target during operation, and the photoelectric element receives the laser reflected by the target. The timer measures the time from launch to reception of the laser beam, and calculates the distance from the observer to the target. The phase method laser rangefinder detects the distance by detecting the phase difference between the emitted light and the reflected light when it propagates in space. [0003] At present, the tradition...

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Problems solved by technology

[0004] Based on this, it is necessary to provide a laser rangefinder and a laser distance measuring method that can directly measure the size of an unobstructed object for the problem that the laser rangefinder cannot directly measure the unobstructed object

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