Laser radar and detecting device thereof

Abstract

The invention discloses a detecting device of a laser radar and the laser radar. The detecting device of the laser radar comprises a lens barrel, a light beam emitting device, an emission lens component, a receiving lens component and a photoelectric processing device. The lens barrel includes an emission support body and a receiving support body, and extending directions of the emission support body and the receiving support body are parallel to each other. The emission lens component is located in the emission support body and is located on an optical path of a detection light beam emitted by the light beam emitting device. The receiving lens component is located in the receiving support body and is located on the optical path of an echo light beam received by the photoelectric processing device. The light beam emitting device and the emission support body are located on one side of a plane, and the photoelectric processing device and the receiving support body are located on the other side of the plane. An emitting direction of the detection light beam is approximately parallel to an incident direction of the echo light beam, and there is no need to turn the light beam. The structure of each optical device is relatively simple, and aligned optical path adjustment is reduced or avoided.

Description

technical field [0001] The present application relates to the field of ranging, in particular to a laser radar and a detection device thereof. Background technique [0002] LiDAR is a general term for laser active detection sensor equipment. Its working principle is roughly as follows: the transmitter of the laser radar emits a laser beam. After the laser beam encounters an object, it undergoes diffuse reflection, and part of it returns and is received by the laser receiver. , the radar module can calculate the distance between the laser radar and the object according to the time interval of sending and receiving the laser beam multiplied by the speed of light, and then divided by 2. [0003] The existing laser radar mainly adopts the structure design of the through shaft in the structure of the main shaft shaft system. The main shaft extends from the top of the laser radar to the bottom. In this way, when designing the detection device, it is necessary to use a mirror to be...

AI Technical Summary

Problems solved by technology

[0003] The existing laser radar mainly adopts the structure design of the through shaft in the structure of the main shaft shaft system. Avoiding the main shaft, the structure design of the detection device is more complicated

Moreover, the multi-line laser radar is a one-to-one transceiver channel, that is, each emitting light source has a photoelectric sensing element corresponding to it. When in use, each pair of emitting light source and photoelectric sensing element needs to be manually aligned. Optical path adjustment, which may increase the difficulty of using lidar and reduce the efficiency of use

Images