Light shielding member, lens set with light shielding structure and laser radar

A technology of lidar and shading structure, applied in the field of environmental perception, can solve the problems of affecting lidar ranging and imaging accuracy, ghosting, smearing, echo signal effects, etc., to reduce production and research and development costs, easy to assemble , the effect of reducing the effect of stray light

Pending Publication Date: 2018-11-23
HESAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the working process of the laser radar, some stray light in the system is emitted abnormally, and when encountering a strong reflection target at a short distance, it will affect the normal echo signal, such as ghosting and

Method used

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  • Light shielding member, lens set with light shielding structure and laser radar
  • Light shielding member, lens set with light shielding structure and laser radar
  • Light shielding member, lens set with light shielding structure and laser radar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] combined reference figure 1 and figure 2 , Embodiment 1 of the present invention provides a light-shielding member for lidar, including a first light-shielding part 1 and a connecting part 2, the first light-shielding part 1 and the connecting part 2 form a first preset angle, so The first light shielding portion 1 extends to a direction away from the connecting portion 2 with a first predetermined height.

[0034] In a possible implementation manner, the first light shielding part 1 may be a sheet structure.

[0035] In a possible implementation manner, the shading member may be an integrally formed structure.

[0036] In a possible implementation manner, the first light shielding portion 1 and the connecting portion 2 may be connected at an angle of inclination or vertically.

[0037] The connecting part 2 is a sheet-like structure, and its specific shape can be any one or a combination of wedge-shaped, rectangular, semi-arc-shaped or other irregular shapes.

[0...

Embodiment 2

[0051] combined reference image 3 and Figure 4 , Embodiment 2 of the present invention provides a light-shielding member for lidar, including a first light-shielding part 1 and a connecting part 2, the first light-shielding part 1 and the connecting part 2 form a first preset angle, so The first light shielding portion 1 extends to a direction away from the connecting portion 2 with a first predetermined height. The shading member also includes a second shading portion 5, the first shading portion 1 and the second shading portion 5 are separated by a first preset distance, and the second shading portion 5 and the connecting portion 2 form a The second preset included angle extends to a direction away from the connecting portion 2 with a second preset height.

[0052] In a possible implementation manner, the first light shielding portion 1 and the connecting portion 2 may be connected at an angle of inclination or vertically. The second light shielding portion 5 and the co...

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PUM

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Abstract

The invention provides a light shielding member, a lens set with a light shielding structure and a laser radar. The light shielding member comprises a first shielding part and a connecting part, wherein the first shading part and the connecting part form a first preset included angle, and the first shading part is extended to a first preset height in the direction away from the connecting part. The lens set with a light shielding structure comprises a first lens set, a second lens set and the light shielding member; wherein the first lens set and the second lens set are adjacently arranged, the first lens set comprises at least one optical lens with a first surface, and the first shading part covers part of the first surface. The light shielding member is simple in structure and can be easily assembled onto an existing laser radar, and the production cost and the research and development cost are reduced. The lens set with the light shielding member is used on a laser radar to reduce the influence of stray light, and the generation of ghost images or trailing phenomena of the laser radar is avoided.

Description

technical field [0001] The invention relates to the technical field of environment perception, and in particular to a light-shielding member, a lens group with a light-shielding structure and a laser radar. Background technique [0002] In the autonomous driving technology, the environmental perception system is a basic and crucial part, and it is the guarantee of the safety and intelligence of the autonomous driving vehicle. The lidar in the environmental perception sensor has great advantages in terms of reliability, detection range, and ranging accuracy. Incomparable advantages. The laser radar transmits and receives the laser beam, analyzes the turn-back time after the laser encounters the target object, and calculates the relative distance between the target object and the vehicle. [0003] Among the many components contained in LiDAR, the transceiver lens group is an important part of LiDAR. The detection light emitted by the laser radar through the light source is d...

Claims

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Application Information

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IPC IPC(8): G02B5/00G02B27/00G02B7/02G01S17/93
CPCG02B7/02G02B27/0018G02B5/00G01S17/931
Inventor 王瑞向少卿
Owner HESAI TECH CO LTD
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