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Optical fiber fixing device used for laser radar

A technology of fiber optic fixing device and laser radar, which is applied in the direction of fiber/cable installation, optics, light guide, etc., can solve the problems of large heat generation, complex process, low space utilization rate, etc., achieve high wiring harness, flexible layout, and solve heat dissipation problems Effect

Pending Publication Date: 2018-09-28
HESAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventionally used semiconductor laser pulse diodes have a very small light-emitting area, but in fact, due to the influence of the chip package and the size of the driving circuit, the distance between the lasers cannot become very dense.
Considering this practical limitation, in order to achieve a higher number of lines and a higher angular resolution, it is forced to increase the density of angles and the number of lines by adding more columns of lasers in the horizontal direction, which will lead to The more columns, the more difficult the production and adjustment, the more complex the process, and the lower the production efficiency; the space utilization rate in the system is low, the focal plane position is particularly crowded, the heat generation is large, and the heat is difficult to be exported, etc. A series of problems

Method used

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  • Optical fiber fixing device used for laser radar
  • Optical fiber fixing device used for laser radar
  • Optical fiber fixing device used for laser radar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Such as figure 1 As shown, an optical fiber fixing device for laser radar includes a first fixed base 2 and an optical fiber fixed plate 1, the first fixed base 2 is connected with the rotor of the laser radar, and the optical fiber fixed plate 1 is connected with the The first fixed base 2 is connected;

[0070] The fiber fixing plate 1 has opposite first side 11 and second side 12, and at least one fixing groove 13 is opened on the first side 11 and / or the second side 12, and the fixing groove 13 is used to fix the laser The radar output optical fiber, the length direction of the fixing groove 13 is arranged at a preset angle with the horizontal plane.

[0071] The first fixed base 2 is fixed on the rotor bottom plate of the laser radar, and the first fixed base 2 includes a first base plate 21, and the top side of the first base plate 21 is provided with a fixed surface for installing the optical fiber. The first fixing structure of the board 1.

[0072] The first...

Embodiment 2

[0081] Such as figure 2 As shown, a fiber optic fixing device for laser radar includes a first fixing base 2 and three fiber fixing plates 1, the first fixing base 2 is connected with the rotor of the laser radar, and the fiber fixing plate 1 connected with the first fixed base 2;

[0082] The fiber fixing plate 1 has opposite first side 11 and second side 12, and at least one fixing groove 13 is opened on the first side 11 and / or the second side 12, and the fixing groove 13 is used to fix the laser The radar output optical fiber, the length direction of the fixing groove 13 is arranged at a preset angle with the horizontal plane.

[0083] The first fixed base 2 is fixed on the rotor bottom plate of the laser radar, and the first fixed base 2 includes a first base plate 21, and the top side of the first base plate 21 is provided with a fixed surface for installing the optical fiber. The first fixing structure of the board 1.

[0084] The first fixing structure includes a f...

Embodiment 3

[0092] Such as image 3 As shown, the difference between this embodiment and Embodiment 2 is that: the first fixing structure includes at least one first slot 25, and the first slot 25 corresponds to the optical fiber fixing plate 1 one by one, and the optical fiber The bottom end of the fixing plate 1 is plugged and connected to the first slot 25 .

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Abstract

The invention provides an optical fiber fixing device used for a laser radar. The optical fiber fixing device comprises at least one fixed base and N optical fiber fixing plates, wherein N is a positive integer. The fixed bases are connected with a rotor of the laser radar. The optical fiber fixing plates are connected with the fixed base, each optical fiber fixing plate is provided with a first side face and a second side face, at least one fixing groove is formed in each of the first side face and / or the second side face, the fixing grooves are used for fixing emitting optical fibers of thelaser radar, and preset angles are preserved between the length directions of the fixing grooves and the horizontal plane. The optical fiber fixing device has the advantages that by cooperating with an optical fiber coupling technology, any number of optical fibers of the laser radar can be fixed, high wire harness of the laser radar can be realized more easily, arrangement of the laser radar canbe more flexible, and radiating problem of the laser radar can be solved better.

Description

technical field [0001] The invention relates to the technical field of laser radar, in particular to an optical fiber fixing device for laser radar. Background technique [0002] As an important part of the environment perception hardware system of smart cars, lidar undertakes important tasks such as roadside detection, obstacle recognition, real-time positioning and mapping in automatic driving. The radar system consists of a laser emitting system and a receiving system. The laser transmitter system generates and emits light pulses, hits the object and reflects back, and is finally received by the receiver. The receiver accurately measures the travel time of the light pulse from when it is emitted to when it is reflected back. Because light pulses travel at the speed of light, the receiver will always receive the previous reflected pulse before the next one is sent. Given that the speed of light is known, travel time can be converted into a measure of distance. LiDAR ca...

Claims

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Application Information

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IPC IPC(8): G02B6/44G02B6/46
CPCG02B6/46G02B6/4439
Inventor 李家盛向少卿
Owner HESAI TECH CO LTD