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Light beam collimation system and method and laser radar

A laser and beam technology, applied in the field of optics, can solve the problem of insufficient far-field ranging capability of lidar, and achieve the effect of reducing design difficulty and design cost

Pending Publication Date: 2020-12-18
HANGZHOU HIKVISION DIGITAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the application provides a beam collimation system and method to solve the problem of insufficient far-field ranging capability of MEMS lidar

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  • Light beam collimation system and method and laser radar
  • Light beam collimation system and method and laser radar
  • Light beam collimation system and method and laser radar

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Embodiment Construction

[0022] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0023] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...

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Abstract

The invention provides a light beam collimation system, and the system comprises a pre-processing module which is disposed between a diode laser and an MEMS galvanometer, and is used for shaping the laser of the diode laser to be uniformly transmitted in all directions, and outputting the laser to the MEMS galvanometer for resonance reflection; and a post-processing module which is arranged behindthe MEMS galvanometer and is used for collimating the reflected laser and outputting the collimated laser so as to detect a to-be-detected target. The laser emitted by the laser device is shaped intolight beams uniformly transmitted in all directions through the pre-processing module so that even if the MEMS galvanometer performs rotary scanning, the light beam collimation effect of the edge view field cannot be reduced due to light spot rotation, and the detection capability of the edge view field and the detection capability of the center view field can be kept consistent. Because the post-processing module only needs to collimate the laser reflected by the galvanometer, the laser can be collimated by adopting a collimating lens on the market, special customization is not needed, and the design difficulty and cost of the light beam collimation system can be reduced.

Description

technical field [0001] The present application relates to the field of optical technology, in particular to a beam collimation system and method, and laser radar. Background technique [0002] In the laser radar system, it is very important to collimate the laser beam, especially for the MEMS (Micro-Electro-Mechanical System, Micro-Electro-Mechanical System) laser radar, the collimation effect of the laser beam directly affects the performance of the laser radar. Detection range and system resolution. [0003] At present, solid-state lasers or fiber lasers with better beam quality are used to emit laser light and be directly collimated by an optical collimation system. Although they have good collimation effects, such lasers are large in size and volume and high in cost. It is beneficial to system integration and miniaturization, and the cost is also high. In order to meet the requirements of miniaturization of laser radar, diode lasers with relatively small size are gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/09G02B26/10G02B26/08G01S17/02G01S7/481
CPCG02B27/0916G02B27/0955G02B26/0833G02B26/105G01S7/4814G01S17/02
Inventor 唐培钧
Owner HANGZHOU HIKVISION DIGITAL TECH