Rotating mirror device and laser radar
A technology of laser radar and rotating mirror, which is applied in the field of laser applications, can solve the problems of receiving light spots offset photoelectric receiving devices, long transmitting time, and reduced receiving efficiency, and achieve the effect of improving detection efficiency
Pending Publication Date: 2021-07-09
O NET COMM (SHENZHEN) LTD
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Problems solved by technology
[0005] The object of the present invention is to provide a rotating mirror device and a laser radar, aiming at solving the problem that the laser rotating mirror system in the prior art scans at a high speed when measuring the distance to a long-distance target due to the fact that the echo time is longer than the launch time. , on the focal plane of the receiving optical system of the laser rotating mirror system, and the rotating mirror has been rotated by a large angle, causing the receiving spot on the focal plane of the receiving optical system to deviate from the photoelectric receiving device, causing the problem of reduced receiving efficiency
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[0027] Now with reference to the accompanying drawings, the embodiments of the present invention will be described in detail.
[0028] Such as figure 1 and image 3 Shown is a preferred embodiment of a rotating mirror device provided by the present invention.
[0029] A laser radar rotating mirror device 1, the laser radar includes a laser transceiver 10, wherein the laser transceiver includes a laser transmitter 11 and a laser receiver 12, including a rotating member 40 and a reflection assembly 20, and the reflection assembly 20 includes a first laser reflection Part 21 and the second laser reflector 22, the rotating member 40 is connected with the reflector assembly 20 and drives the reflector assembly 20 to rotate around the axis of rotation, the reflective surface of the first laser reflective member 21 and the reflective surface of the second laser reflective member 22 are preset The angles are opposite to each other, and the laser emitted by the laser transmitter 11 i...
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The invention relates to the technical field of laser application, and discloses a rotating mirror device and a laser radar, the rotating mirror device comprises a rotating member and a reflection assembly, the reflection assembly comprises a first laser reflection member and a second laser reflection member, and the rotating member is connected with the reflection assembly and drives the reflection assembly to rotate around a rotating shaft. The reflecting surface of the first laser reflecting piece and the reflecting surface of the second laser reflecting piece are oppositely arranged at an included angle at a preset angle. The rotating mirror device has the beneficial effects that through the arrangement of the first laser reflecting piece and the second laser reflecting piece which have the angle difference, when the rotating mirror device is used for high-speed rotating scanning, the angle difference between the first laser reflecting piece and the second laser reflecting piece can be used for compensating for laser receiving and transmitting offset; and the purpose of compensating optical axis deviation caused by laser transmitting and receiving time difference is achieved, and therefore the echo laser detection efficiency of a long-distance target in a high-speed rotating scanning state is effectively improved.
Description
technical field [0001] The patent of the present invention relates to the technical field of laser applications, in particular, to a rotating mirror device and laser radar. Background technique [0002] With the development of automatic driving technology, automatic driving technology uses laser radar to detect the surrounding environment. Among them, laser radar is a radar system that detects the position, speed and other characteristic quantities of the target by emitting laser beams. It has high accuracy, fast operation speed and With the advantages of high efficiency, it can be used as an indispensable core sensor in the fields of automobile automatic driving, robot positioning and navigation, space environment mapping, security and security. [0003] At present, in order to meet the horizontal scanning field of view and vertical field of view covering a large range in the automotive laser radar, a rotating mirror is used as the scanning component, which consists of one ...
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IPC IPC(8): G01S7/481G01S17/931
CPCG01S7/481G01S17/931
Inventor 任建峰雷成峰
Owner O NET COMM (SHENZHEN) LTD