Rapid calibration equipment for TOF laser module

Abstract

The invention relates to the technical field of laser module calibration equipment, in particular to TOF laser module rapid calibration equipment which comprises two parallel sliding rails, one ends of the two sliding rails are fixedly connected with a fixed plate, the top faces of the two sliding rails are slidably connected with a movable plate, the movable plate is parallel to the fixed plate, and the fixed plate is fixedly connected with the fixed plate. And three panels are arranged on the top surfaces of the movable plate and the fixed plate at equal intervals. According to the invention, through the arrangement of the six panels, the light of the test module is emitted to one side wall of the fourth panel along the direction of one screw, the light is reflected by the fourth panel, the second panel, the fifth panel and the third panel in sequence, the light is vertically emitted to the sixth panel, the light is reflected by the sixth panel and returns along the original path, and finally the light is received by the test module. The actual distance that light passes through in a single pass is five times of the distance between the third panel and the sixth panel, the distance between the third panel and the sixth panel is changed by driving the movable plate to move, and therefore the stroke length of the light is changed, the length needed by a track is reduced, and the occupied area is reduced.

Description

technical field [0001] The invention relates to the technical field of laser module calibration equipment, in particular to a TOF laser module rapid calibration device. Background technique [0002] The TOF laser module is a two-way ranging module. Its working principle is to continuously emit optical pulse signals to the target, receive the optical pulse signals reflected by the target, and measure the distance of the target by detecting the round-trip flight time of the optical pulse signal. Output the target distance data. Due to the influence of the light output power of the TOF module, the farther the distance from the target is, the greater the power attenuation of the optical pulse signal. Therefore, for targets with different distances, the measurement distance obtained by the TOF module is different from the actual target. The error that exists between the distances is non-linear. Therefore, when calibrating the distance of the TOF module, segment calibration for d...

AI Technical Summary

Problems solved by technology

[0003] The existing rapid calibration equipment for laser modules generally installs the target plate on a long straight track, and changes the distance between the target plate and the laser module by moving the position of the target plate. The required track length is relatively long. Take up a lot of space

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