Laser radar and phased array laser emission unit thereof

A laser emission and phased array technology, applied in the field of laser detection, can solve the problems of large volume and slow scanning of lidar, and achieve the effect of fast scanning speed and reduced volume

Pending Publication Date: 2018-10-23
OPTIXPAN SEMICON INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on this, it is necessary to provide a laser radar with a smaller volume and a higher scanning rate and its phased array laser emitting unit for the problems of large volume and slow scanning of the existing laser radar.

Method used

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  • Laser radar and phased array laser emission unit thereof
  • Laser radar and phased array laser emission unit thereof

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Embodiment Construction

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes ...

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Abstract

The invention relates to a laser radar and a phased array laser emission unit thereof. A laser beam splitting component, light emitting antennas and a plurality of phase adjusters are included. Through the cooperation of the laser beam splitting component and the plurality of light emitting antennas, multiple paths of lasers can be emitted. The phase adjusters are used to adjust the phases of themultiple paths of lasers and the multiple paths of lasers have a fixed phase difference so that a radiation direction diagram is acquired through interference in a far field, a strongest main light beam is formed at a specific direction and scanning is realized. Further, through changing the phases of the multiple paths of lasers, the different radiation direction diagrams can be acquired so as torealize omnibearing scanning. The laser radar can realize omnibearing monitoring without a mechanical rotating component. The scanning rate of the laser radar is determined by the frequency of phaseadjusting and is not limited by the rotation speed of the mechanical rotating component so that the scanning speed of the laser radar is fast. The sizes of the laser radar and the phased array laser emission unit are small and the scanning rate is high.

Description

technical field [0001] The invention relates to the technical field of laser detection, in particular to a laser radar and a phased array laser emitting unit thereof. Background technique [0002] Lidar is a sensor that uses laser light to detect and measure distances. Its principle is similar to that of ordinary sonic radar and sonar. That is, the laser pulse is emitted to the target by the transmitting device, and the distance and reflectivity of the target are measured by the receiving device measuring the delay and intensity of the return pulse. [0003] In order to achieve all-round monitoring, the radar needs to scan 360-degree space. Traditional radar generally adopts a mechanical drive mode, that is, a mechanical device drives the radar's transmitting unit to rotate in all directions to achieve 360-degree scanning. However, such radars use cumbersome mechanisms that make scanning rates slow. Moreover, once the mechanical rotating device breaks down, it is difficul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/282G01S17/48
CPCG01S7/282G01S17/48
Inventor 任亚林牛犇
Owner OPTIXPAN SEMICON INC
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