Laser radar system capable of sensing spectral information

By introducing broadband light sources, spectral elements and surface array photodetectors into the S-Lidar system, the detection of the spectral information of the object is solved, and the problem that the S-Lidar system can only obtain distance information is solved, expanding its application range and improving adaptability.

CN119644298APending Publication Date: 2025-03-18CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Patent Information

Application Number
CN202411781867.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-05
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

During detection, the S-Lidar system can only obtain distance information of the object, but cannot obtain spectral information of the object, which limits its application range.

Method used

A lidar system that can sense spectral information is designed, using a broadband light source, spectroscopic element and a surface array photodetector to spectralize the echo signal light through the spectral element, and multiple pixel units of the surface array photodetector respond to spectral information in different bands to achieve simultaneous acquisition of distance and spectral information.

Benefits of technology

On the basis of maintaining the high distance measurement accuracy and strong anti-interference ability of the S-Lidar system, the spectral information detection of objects at different distances is realized, which expands the application range of the S-Lidar system and improves its adaptability in the field of environmental remote sensing.

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Abstract

The invention relates to the technical field of laser radars, in particular to a laser radar system capable of sensing spectral information, comprising: a light source for emitting probe light which is scattered by an object to be detected to form echo signal light; the receiving lens is used for receiving the echo signal light and carrying out condensation processing on the echo signal light; the light splitting element receives the echo signal light subjected to light condensation processing and performs light splitting processing so as to form light splitting signal light; the area array photoelectric detector comprises a plurality of pixel units, different pixel units respond to different light splitting signal light, and the area array photoelectric detector receives the light splitting signal light and obtains distance information and spectral information of the to-be-detected object according to response conditions of the pixel units; wherein the plane where the receiving lens is located, the plane where the area array photoelectric detector is located and the plane where the object to be detected is located intersect at the light source. The method is at least beneficial to obtaining higher-dimension detection information.
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