Title:
DETECTION METHOD AND DETECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/089464
Kind Code:
A1
Abstract:
A detection method and a detection system. The detection method is performed by the detection system comprising a light emitting module (110), a processing module (120), and a light receiving module (130). The light emitting module (110) comprises N emitting regions, wherein N is an integer greater than or equal to 2, and emitted light of every two adjacent emitting regions in the emitting regions has different polarization angles; the light receiving module (130) comprises N receiving regions corresponding to the N emitting regions in the light emitting module (110), and every two adjacent receiving regions in the receiving regions receive, at different polarization angles, light returned by a detected object (150). The detection method comprises: during at least a part of a time period, at least some of the receiving regions in the light receiving module (130) receive returned light having different polarization angles, reflected by the detected object (150), and input from at least two emitting regions; the light receiving module (130) corresponds to at least some regions of the returned light having different polarization angles, and is only excited by the returned light in which returned light having at least one of the polarization angles is partially or completely filtered out to generate a photogenerated electrical signal; the processing module (120) processes the photogenerated electrical signal excited by the light receiving module (130) by means of the filtered returned light, to obtain final target information of the detected object (150).
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Inventors:
LEI SHUYU (CN)
Application Number:
PCT/CN2021/126590
Publication Date:
May 05, 2022
Filing Date:
October 27, 2021
Export Citation:
Assignee:
NINGBO ABAX SENSING ELECTRONIC TECH CO LTD (CN)
International Classes:
G01S17/894; G01S7/48
Domestic Patent References:
| WO2018168959A1 | 2018-09-20 |
Foreign References:
| CN111323787A | 2020-06-23 | |||
| CN108132471A | 2018-06-08 | |||
| CN111398976A | 2020-07-10 | |||
| US20160003946A1 | 2016-01-07 | |||
| CN110703275A | 2020-01-17 |
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