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Solid-state lidar, its structure and its control method

A laser radar and laser technology, applied in the field of laser detection, can solve the problem of poor ranging ability of solid-state laser radar

Active Publication Date: 2021-07-02
SUTENG INNOVATION TECH CO LTD
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Problems solved by technology

[0004] Based on this, it is necessary to provide a solid-state laser radar with better ranging capability, its structure and its control method for the problem of poor ranging capability of solid-state laser radar.

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  • Solid-state lidar, its structure and its control method
  • Solid-state lidar, its structure and its control method
  • Solid-state lidar, its structure and its control method

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Embodiment Construction

[0066] In order to make the purpose, technical solution and advantages of the present application clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0067] figure 1 A schematic diagram of a solid-state laser radar provided for the embodiment of this application, such as figure 1 As shown, the solid-state lidar includes: a transceiver module 10, the above-mentioned transceiver module 10 includes: a transmitter module 11 for emitting outgoing laser light; a beam splitting module 12 for passing through the above-mentioned outgoing laser light and shooting to the vibrating mirror 20. It is also used to deflect the received reflected laser light to the receiving module 13; the above-mentioned reflected laser light is the laser carrying object-re...

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Abstract

This application relates to a solid-state laser radar, its structure and its control method. The solid-state laser radar includes: a transceiver module, a vibrating mirror and a beam expander. The transceiver module includes a transmitter module, a beam splitter module and a receiver module, and a beam expander. It is used to expand and collimate the output laser reflected by the galvanometer, and then shoot it to the detection area, and is also used to converge the reflected laser to the galvanometer. During the laser emission process, since the emission power of the emission module is constant, the divergence angle of the outgoing laser light can be reduced through the beam expander, which will lead to the concentration of the outgoing laser energy and increase the energy density of the outgoing laser light, thereby improving the ranging capability of the laser radar. ; During the laser receiving process, the beam expander with a large receiving aperture can receive more reflected laser light, thereby improving the ranging capability. In this way, the receiving aperture of the solid-state laser radar is no longer limited by the size of the receiving surface of the galvanometer. In the case of the same transmission power and detectors, the ranging capability of the lidar is improved.

Description

technical field [0001] The invention relates to the technical field of laser detection, in particular to a solid-state laser radar, its structure and its control method. Background technique [0002] Lidar has the advantages of high precision and high resolution, and at the same time can obtain the surrounding three-dimensional point cloud information, which has become an indispensable key sensor for future autonomous driving. Compare the received reflected laser light reflected from the object in the detection area with the outgoing laser light to obtain the relevant information of the object's distance, speed, orientation, etc. [0003] Among them, MEMS-based solid-state lidar is a kind of lidar, because the receiving aperture is limited by MEMS, so under the same transmission power and detector, the ranging ability of the lidar will be poor. Contents of the invention [0004] Based on this, it is necessary to provide a solid-state laser radar with better ranging capabi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/88G01S7/481G01S7/495
CPCG01S7/481G01S7/495G01S17/88
Inventor 王吉
Owner SUTENG INNOVATION TECH CO LTD
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