Rotary scanning laser radar imaging device

A technology of laser radar imaging and rotational scanning, which is applied in measuring devices, instruments, and re-radiation, etc., to reduce the difficulty of assembly and adjustment and save manufacturing costs.

Active Publication Date: 2019-06-18
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, this technology can usually only image static scenes or create a relatively static environment by tracking and aiming.

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  • Rotary scanning laser radar imaging device
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  • Rotary scanning laser radar imaging device

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Embodiment Construction

[0024] The disclosure of the present invention will become more comprehensible with reference to the accompanying drawings. It is easier for those skilled in the art to understand that: these drawings are only used to illustrate the technical solution of the present invention, and are not intended to limit the protection scope of the present invention. Figure 1-2 and the following description describe alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. In order to teach the technical solutions of the present invention, some conventional aspects have been simplified or omitted. It should be understood by those skilled in the art that modifications or substitutions from these embodiments will be within the scope of the present invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. As a result, the inventio...

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Abstract

The invention relates to a rotary scanning laser radar imaging device. The device includes a speckle illumination system, a line array detection system, and a mechanical rotary table system carrying the speckle illumination system and the line array detection system, the mechanical rotary table system can achieve 360 DEG horizontal rotation, the optical axis of the speckle illumination system is parallel to the optical axis of the line array detection system, the optical axis of the speckle illumination system and the optical axis of the line array detection system are both perpendicular to the rotation axis of the mechanical rotary table system. The device is advantaged in that detection of the target information is performed based on the random code measurement principle, the number of detection units of a line array detector no longer directly limits the resolution, higher resolution radar imaging can be achieved with a smaller pixel number of line array detectors, the cost of acquiring high-resolution 3D imaging is reduced, and a new technical solution is provided for an automotive laser radar.

Description

technical field [0001] The invention relates to a laser radar imaging device, in particular to a rotary scanning laser radar device based on speckle illumination and horizontal line array detection. Background technique [0002] Lidar based on time-of-flight (TOF) measurement can efficiently and stably acquire three-dimensional spatial information of long-distance targets, and is considered an indispensable detection method for ADAS systems above L4. The traditional mechanical scanning laser radar consists of multiple Laser-APD transceiver pairs arranged vertically to form a multi-line structure, which is mounted on a rotating motor to detect the surrounding 360° environment. At present, Velodyne's latest generation 128-line lidar product VLS-128 has been able to achieve superior imaging with a vertical resolution of up to 0.1° within a vertical 40° observation field of view. All-solid-state or hybrid solid-state (hereinafter collectively referred to as solid-state) lidar i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/89G01S7/481G01S7/48
Inventor 韩申生王成龙马双龚文林
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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