LiDAR that prevents light leakage

A laser radar and laser technology, applied in the optical field, can solve the problems of the increase in the number of substrates, the overall volume and cost of the laser radar, and achieve the effect of preventing light leakage.

Active Publication Date: 2021-11-05
锐驰智光(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This will increase the number of substrates and increase the overall size and cost of the lidar

Method used

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  • LiDAR that prevents light leakage
  • LiDAR that prevents light leakage
  • LiDAR that prevents light leakage

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0029] figure 2 is a plan view showing the laser radar according to the first embodiment of the present invention. image 3 is a perspective view showing the laser radar according to the first embodiment of the present invention.

[0030] Such as figure 2 As shown, the lidar according to the first embodiment of the present invention may include a transmitting unit 100 , a receiving unit 200 , a first substrate 300 , a second substrate 400 , a first lens 500 and a second lens 600 . The emitting part 100 may emit laser light based on the driving of the driving circuit located on the first substrate 300 . The emitted laser light is usually divergent, so it can be collimated by the first lens 500 and sent out to the outside of the lidar as a detection signal. Laser light reflected by an external object of the lidar may be incident to the lidar as an echo signal, and the laser light incident to the lidar may be incident to the receiving unit 200 after being focused by the seco...

no. 2 example

[0052] Figure 5 is a plan view showing a laser radar according to a second embodiment of the present invention.

[0053] The lidar according to the second embodiment differs from the lidar according to the first embodiment in that the lidar according to the second embodiment further includes a support portion 700 . Like the lidar according to the first embodiment, the lidar according to the second embodiment also includes a transmitting part 100 , a receiving part 200 , a first substrate 300 , a second substrate 400 , a first lens 500 and a second lens 600 .

[0054] Wherein, the first lens 500 and the second lens 600 may be fixed inside the supporting part 700 . The laser light paths of the laser radar according to the first embodiment and the laser radar according to the second embodiment may be the same, and the difference may only lie in figure 2 The LiDAR is additionally provided with a supporting part 700 for fixing the transmitting part 100 , the receiving part 200 ...

no. 3 example

[0059] Figure 6 is a plan view showing a laser radar according to a third embodiment of the present invention.

[0060] The lidar according to the third embodiment may also include a support portion 700 . The difference between the lidar according to the third embodiment and the lidar according to the second embodiment may be that the first substrate 300 and the second substrate 400 of the lidar according to the third embodiment may be located on the same plane. That is, the transmitting unit 100 and the receiving unit 200 may also be located on the same plane, and the first lens 500 and the second lens 600 may also be located on the same plane.

[0061] A protrusion separating the first substrate 300 and the second substrate 400 may be formed between a position of the support part 700 where the first substrate 300 is fixed and a position where the second substrate 400 is fixed, so that light leakage as described above may be prevented. The protrusion of the support part 70...

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Abstract

The invention discloses a laser radar for preventing light leakage. A laser radar according to an embodiment of the present invention includes: a first lens having an optical axis along a first direction; a second lens having an optical axis along a first direction; a first substrate disposed on the first lens of the first lens. The direction side; the second substrate is arranged on the first direction side of the second lens; the emitting part, capable of emitting laser light, is arranged on the surface of the first substrate facing the first lens; the receiving part, capable of receiving laser light, is arranged on the second substrate On the surface facing the second lens, the first substrate and the second substrate are staggered by a predetermined distance along the first direction.

Description

technical field [0001] The invention relates to the field of optics, in particular to a laser radar for preventing light leakage. Background technique [0002] In the field of autonomous driving, autonomous vehicles can detect surrounding objects with the help of devices such as Lidar (LIDAR). The laser radar can emit a laser beam to the surrounding three-dimensional space as a detection signal, and make the laser beam irradiate the objects in the surrounding space and then be reflected to become an echo signal and return. The laser radar combines the received echo signal with the emitted detection signal Comparisons are made to obtain relevant information about surrounding objects such as distance, speed, etc. [0003] The aforementioned lidar includes a transmitting module and a receiving module. The transmitting module generates and emits a laser beam, and the laser beam that hits the surrounding objects and reflects back is received by the receiving module. Since the ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01S17/08G01S17/931G01S7/481
CPCG01S17/08G01S17/931G01S7/481
Inventor姜波
Owner锐驰智光(北京)科技有限公司