Lidar and its detection device

Abstract

The application discloses a laser radar detection device and the laser radar. The detecting device of lidar in the present application comprises: lens barrel, light beam emitting device, emitting lens assembly, receiving lens assembly, and photoelectric processing device; Lens barrel includes emitting support body and receiving support body, and the structure of emitting support body and receiving support body The extension directions are parallel to each other; the emitting lens assembly is located inside the emitting support body and on the optical path of the detection beam emitted by the beam emitting device, and the receiving lens assembly is located inside the receiving support body and located on the optical path of the echo beam received by the photoelectric processing device Above; the beam emitting device and the emitting support are located on one side of a plane, and the photoelectric processing device and the receiving support are located on the other side of the plane. The application makes the outgoing direction of the detection beam and the incident direction of the echo beam approximately parallel, without turning the beam, and the structure of each optical device is relatively simple, reducing or avoiding the adjustment of the alignment optical path.

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

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