Optical axis calibration system for laser range finder

Abstract

The invention discloses an optical axis calibration system for a laser range finder. The system comprises the range finder, an aiming axis, an emitting axis, a receiving axis, a spherical focus lens, a receiving screen, a first planar reflection mirror and a second planar reflection mirror, wherein the range finder emits the aiming axis, the emitting axis and the receiving axis. Optical axes emitted by the range finder pass through the spherical focus lens and then are reflected between the first planar reflection mirror and the second planar reflection mirror for many times and finally focused on the receiving screen. Compared with the prior art, the optical axis calibration system has advantages that an axial calibration site is greatly narrowed, and consequently great convenience is brought to operators while cost of experimental instruments can be greatly reduced, development of axis calibration instruments is facilitated, and engineering production of the axis calibration instruments is benefited.

Description

technical field [0001] The invention relates to the field of laser detection, in particular to an optical axis adjustment system of a laser distance measuring machine. Background technique [0002] Laser ranging plays an important role in the research and application of laser detection, communication, tracking, guidance, radar and so on. The three-axis parallel adjustment technology in the laser ranging system is the key technology in the development of the laser ranging machine. The so-called optical axis adjustment of the laser ranging The optical axes of the three optical systems of the distance machine, namely the transmitting optical system (laser plus transmitting telescope), receiving optical system (receiving telescope) and aiming optical system (aiming telescope) are adjusted to the same direction. attached figure 1 The schematic diagram of the traditional axis adjustment is shown, 1 is the distance measuring machine, 2 is the aiming axis, 3 is the transmitting ax...

AI Technical Summary

Problems solved by technology

[0004] One is to use a collimator with a large aperture and a long focal length for adjustment. The disadvantages are: 1) the cost is high, usually more than 100,000, 2) the instrument is bulky, at least 3 meters long, and occupies a large area;

[0005] One is to use an off-axis long focal length spherical mirror to adjust on the optical platform. The disadvantage is that an optical platform of about 4 meters is required, which occupies a larger area of ​​the experimental site. Although the cost is slightly lower than the former, it still needs about 100,000.

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