Laser radar system based on MEMS scanning mirror

A laser radar, scanning mirror technology, applied in radio wave measurement systems, electromagnetic wave re-radiation, utilization of re-radiation and other directions, can solve the problem that the resolution cannot meet the needs of use

Pending Publication Date: 2020-03-10
TANWAY TECH (BEIJING) CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In related technologies, limited by the number of array units of sensors used to receive target echoes i

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  • Laser radar system based on MEMS scanning mirror
  • Laser radar system based on MEMS scanning mirror
  • Laser radar system based on MEMS scanning mirror

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Embodiment Construction

[0038] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0039] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0040] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific implementation manners. It will be understood by those skilled in the art that the present disclosure may be practiced without some of the specific details. In some instances, methods, means, componen...

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Abstract

The invention relates to a laser radar system based on an MEMS scanning mirror. The system comprises: a laser emitting device used for emitting a laser beam; the MEMS scanning mirror that is used forreflecting the laser beam to form a scanning laser beam so as to realize light beam scanning in a first direction; an optical rotating mirror that is used for reflecting the scanning laser beam to form a reflection laser beam so as to realize light beam scanning in a second direction; the optical rotating mirror is also used for reflecting a received target echo to form a reflection echo; a laserreceiving device is used for receiving the reflection echo; a scanning control device is used for controlling the laser emitting device and/or the MEMS scanning mirror, so that the laser beams entering the MEMS scanning mirror in each swing period have a plurality of incident angles, and the incident angles of the laser beams in the adjacent swing periods are different. According to the system, the light energy utilization rate of laser beams is high, the detection distance is large, the detection precision is high, and the detection fineness and resolution are improved in a time division multiplexing mode.

Description

technical field [0001] The present disclosure relates to the technical field of laser radar, in particular to a laser radar system based on a MEMS scanning mirror. Background technique [0002] Lidar technology is a radar system that emits laser beams to detect the position, speed and other characteristic quantities of the target. The lidar technology calculates the feature quantity of the target based on the Time of Flight (TOF) method. Lidar technology is widely used in autonomous driving, surface topography mapping, military reconnaissance, atmospheric detection, robot vision and other fields. In the related art, due to the limitation of the number of array units of the sensor used to receive the target echo in the laser radar system, the detection resolution of the laser radar system cannot meet the use requirements. Contents of the invention [0003] In view of this, the present disclosure proposes a laser radar system based on a MEMS scanning mirror. [0004] Acco...

Claims

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Application Information

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IPC IPC(8): G01S7/481G01S17/88
CPCG01S7/481G01S17/88
Inventor 王世玮孟玉凰郑睿童沈罗丰
Owner TANWAY TECH (BEIJING) CO LTD
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