Laser transceiving module and light modulation method therefor, lidar, and autonomous driving device

Abstract

A laser transceiving module (10) and a light modulation method therefor, a LIDAR (100), and an autonomous driving device, relating to the technical field of radar. The laser transceiving module (10) comprises a base (1), a side cover (2), a laser emission module (3), an emission optical system (4), a beam splitting module (5), a receiving optical system (6), and a laser receiving module (7). The base (1) comprises a main base body (11), the main base body (11) forming a first cavity (9) together with the side cover (2), the emission optical system (4), the beam splitting module (5), and the receiving optical system (6) being arranged inside the cavity (9). Inside the cavity (9) are provided an emission channel (91), a beam splitting channel (92), and a receiving channel (93) used for respectively mounting the emission optical system (4), the beam splitting module (5), and the receiving optical system (6). The laser emission module (3) and the laser receiving module (7) are arranged onthe base (1), and are arranged outside the cavity (9), and the laser emission module (3) is used to emit emergent laser light. The present solution implements modularized design of a laser transceiving module (10), causing light modulation to be simple.

Description

technical field [0001] Embodiments of the present invention relate to the field of radar technology, in particular to a laser transceiver module and its light adjustment method, laser radar and automatic driving equipment. Background technique [0002] Lidar is a radar system that uses laser light to detect characteristic quantities such as the position and speed of target objects. Lidar generally includes a laser transceiver module composed of a transmitter module and a receiver module. Its working principle is that the transmitting module first emits the outgoing laser for detection to the target, and then the receiving module receives the echo laser reflected from the target object, and can obtain the relevant information of the target object after processing the received echo laser, such as Parameters such as distance, orientation, height, speed, attitude, and even shape. [0003] The existing laser transceiver module contains many components. After assembling each com...

AI Technical Summary

Problems solved by technology

Due to the mutual influence of the optical path between each component, the adjustment of the optical path is more complicated and the adjustment time is longer

In addition, in order to assemble and fix the position of each component, the volume occupied by the fixed structure is also large, resulting in a large volume of the entire transceiver module

Images