Solid-state lidar, structure and control method thereof

A lidar and laser technology, applied in the field of laser detection, can solve problems such as poor ranging capability of solid-state lidar

Active Publication Date: 2019-09-24
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 capabilit...

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

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[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

The present application relates to a solid-state lidar, and a structure and control method thereof. The solid-state lidar includes a transceiver module, a galvanometer, and a beam expander. The transceiver module includes a transmitting module, a beam splitting module, and a receiving module. The beam expander is configured to expand and collimate the output laser reflected by the galvanometer and then to emit the expanded and collimated laser to a detection area, and is also configured to converge the reflected laser to the galvanometer. In a laser emission process, since the transmitting module has constant transmitting power, the divergence angle of the output laser can be reduced by the beam expander so as to accumulate the output laser energy, improve the energy density of the output laser, and further improve the ranging capability of the lidar. In a laser receiving process, the beam expander having a large receiving aperture can receive more reflected laser so as to also improve the ranging capability. Thus, the receiving aperture of the solid-state lidar is no longer limited by the size of the receiving surface of the galvanometer. In the case of equivalent transmitting 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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IPC IPC(8): G01S17/88G01S7/481G01S7/495
CPCG01S7/481G01S7/495G01S17/88
Inventor 王吉
Owner SUTENG INNOVATION TECH CO LTD
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