Laser radar system and laser scanning control method

Abstract

The present application relates to a laser radar system and a laser scanning control method. The laser radar system may include: a laser emitting module, a birefringent prism, a vibrating mirror, and a laser receiving module; a laser emitting module for emitting a laser beam; The first laser and the second laser; there is an angle between the first laser and the second laser; the vibrating mirror is used to reflect the first laser and the second laser to different positions in the detection area; the laser receiving module is used for Respectively receive the first echo beam and the second echo beam reflected from the detection area; wherein, the first echo beam is the first laser beam reflected by the object in the detection area and the second echo beam is the second echo beam The laser is reflected back by objects in the detection area. The laser radar system of this embodiment can improve the scanning field of view.

Description

technical field [0001] The present application relates to the technical field of laser radar, in particular to a laser radar system and a laser scanning control method. Background technique [0002] At present, one of the main problems of lidar technology is how to realize the scanning of light beams, which is also the key to the advancement of lidar technology in laser ranging technology. [0003] Among them, Micro-Electro-Mechanical System (MEMS, Micro-Electro-Mechanical System) lidar generally uses the vibration of the MEMS vibrating mirror to realize beam scanning. However, one of the main problems of MEMS lidar is that the deflection angle of the MEMS galvanometer is limited, resulting in insufficient scanning angle, which limits the scanning field of view. Usually, the mechanical scanning angle of a single MEMS galvanometer is generally ±5°, that is, the scanning field of view is ±10°, which is far from enough for the scanning field of view in scenarios such as automa...

AI Technical Summary

Problems solved by technology

However, one of the main problems of MEMS lidar is that the deflection angle of the MEMS galvanometer is limited, resulting in insufficient scanning angle, which limits the scanning field of view.

Usually, the mechanical scanning angle of a single MEMS galvanometer is generally ±5°, that is, the scanning field of view is ±10°, which is far from enough for the scanning field of view in scenarios such as automatic driving or assisted driving.

[0004] In short, the current lidar system has the problem that the scanning field of view is too small

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