Preliminary adjustment vertical device of emission light beam direction of laser radar

Abstract

The invention discloses a preliminary adjustment vertical device of the emission light beam direction of a laser radar. The preliminary adjustment vertical device comprises a base, a vertical adjustment mechanism, a horizontal adjustment mechanism, a two-dimensional plane adjustment mechanism, two gradienters and reflection lenses, wherein the vertical adjustment mechanism is fixed on the base to regulate vertical direction height; the horizontal adjustment mechanism is connected with the movable end of the vertical adjustment mechanism to regulate horizontal direction length; the two-dimensional plane adjustment mechanism is connected with the movable end of the horizontal adjustment mechanism to regulate the level of a plane; the two gradienters are horizontally fixed on the two-dimensional plane adjustment mechanism and are mutually vertical; the reflection lenses are arranged on the two-dimensional plane adjustment mechanism. The height of the vertical adjustment mechanism and the length of the horizontal adjustment mechanism are adjusted, so that the reflection lenses are positioned on an emission laser light path to reflect emission laser, the two-dimensional plane adjustment mechanism is adjusted by referring to the gradienters, and therefore, the reflection lenses are positioned on a horizontal position. Small holes are arranged in the light path between an emission laser mirror bracket and the reflection lenses, emission light beams and reflection light beams all can pass through the small holes to quickly and preliminarily finish regulating the vertical emission direction of the emission laser.

Description

technical field [0001] The invention relates to the technical field of laser radar, in particular to a vertical device for preliminary adjustment of the emitted light beam direction of laser radar. Background technique [0002] Since the invention of laser, the application of laser in atmospheric detection has developed rapidly. For decades, various types of atmospheric detection lidar technologies have emerged, such as: meter scattering lidar, Rayleigh scattering lidar, Raman lidar, differential absorption lidar and so on. In these lidar systems, the most common detection mode is the vertical (or quasi-vertical) detection mode. [0003] In vertical (or quasi-vertical) detection lidar systems, initial adjustments are an essential step in the development process. The key step in the initial adjustment process is to adjust the initial position of the transmitting mirror frame relatively quickly, that is, to adjust the laser beam to be initially vertical, and then perform fin...

AI Technical Summary

Problems solved by technology

The first method relies too much on the operator's lidar adjustment experience. Since the relative position of the laser beam relative to the field of view of the telescope is random, even an experienced operator will take a long time to make the initial adjustment.

The second method of vertical adjustment is to set two small holes on the emission beam path to ensure the verticality of the two small holes, and the distance between the other two small holes should be as far as possible to ensure the vertical accuracy of the beam, and install these two The small hole needs to occupy the emission space and carry out a specific mechanical structure design, which is particularly time-consuming and laborious for the multi-beam emission lidar system

For these two traditional adjustment methods, especially for lidar systems with multiple emission beams, it will take a lot of time and space, and it is difficult to quickly adjust the emission beams to the vertical

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