Calibration device for quickly positioning collimating lens and calibrating beam pointing

Abstract

The invention discloses a calibration device for quickly positioning a collimating lens and calibrating beam pointing. The calibration device comprises a band pass filter, an adapter, a telescopic sleeve, an achromatic lens, a main light tube and a CMOS camera, wherein the band pass filter is configured to extract an optical signal in the target spectral segment; the adapter is configured to fix the band pass filter and fast access the target light path to be dimmed; the telescopic sleeve is configured to fix the achromatic lens; the achromatic lens is configured to concentrate the collimatedparallel optical signals on the surface array CCD photosensitive surface of the CMOS camera; the main light tube is used in combination with the telescopic sleeve to ensure that the focal plane of theachromatic lens can be coincident with the surface array CCD photosensitive surface in the CMOS camera; and the CMOS camera is configured to acquire and real-time display the optical signal patternsconcentrated by the achromatic lens on the surface array CCD photosensitive surface. The calibration device provided by the invention can display the process and result of collimating lens positioningand beam pointing calibration quickly and in real time, and has the advantages such as small volume, light weight, convenient carrying and high precision.

Description

technical field [0001] The invention belongs to the field of lidar optical system debugging, and relates to a portable and visual calibration device capable of quickly and accurately realizing collimator lens positioning and beam pointing calibration. Background technique [0002] Lidar is a powerful tool capable of remote sensing the Earth's atmosphere with high precision and high resolution. During the development and adjustment of the laser radar optical receiving system, it is often required to adjust the optical components or components to the specified working mode to ensure the overall performance of the optical receiving system and the accuracy of the radar target detection parameters. During the assembly and adjustment of optical components, it is necessary to use appropriate tools and methods to assist in the adjustment and ensure the adjustment accuracy. [0003] When developing a miniaturized lidar receiving system, mature medium / small-caliber commercial astrono...

AI Technical Summary

Problems solved by technology

It is an optional solution to use a thin parallel beam of visible laser (such as helium-neon laser, 632.8nm red light) to calibrate the working angle of the beam guiding element, but this method depends on the subjective judgment of the operator, and the accuracy is limited, and it cannot be directly compared with The mechanical mechanism in the optical system cooperates with the joint adjustment, and the operation is not intuitive and convenient enough

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