US 12,436,243 B2
Detection apparatus, laser radar system, and terminal
Xuan Hu, Shanghai (CN); Guangyao Yang, Shanghai (CN); Xianling Shi, Shanghai (CN); and Zhizhen Huang, Shanghai (CN)
Assigned to Shenzhen Yinwang Intelligent Technologies Co., Ltd., Shenzhen (CN)
Filed by SHENZHEN YINWANG INTELLIGENT TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed on Jun. 30, 2023, as Appl. No. 18/345,739.
Application 18/345,739 is a continuation of application No. PCT/CN2021/131172, filed on Nov. 17, 2021.
Claims priority of application No. 202110008506.7 (CN), filed on Jan. 5, 2021.
Prior Publication US 2023/0341525 A1, Oct. 26, 2023
Int. Cl. G01S 7/481 (2006.01); G01S 17/42 (2006.01)
CPC G01S 7/4817 (2013.01) [G01S 7/4818 (2013.01); G01S 17/42 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A detection apparatus, comprising:
a laser generation assembly, configured to generate a detection beam, wherein the detection beam comprises N emitted sub-beams, the laser generation assembly comprises a single-frequency laser and an optical resonant cavity, the single-frequency laser is configured to emit single-frequency laser light, and the optical resonant cavity is disposed on a transmission path of the single-frequency laser light, and is configured to act on the single-frequency laser light to generate M sub-beams, wherein wavelengths of the M sub-beams are different from each other, and M is a positive integer greater than or equal to N;
a sending and receiving assembly, configured to transmit the N emitted sub-beams to target scanning space at different emission angles, and converge N reflected sub-beams into a reflected beam, wherein wavelengths of the N emitted sub-beams are different from each other, the emission angles correspond to the wavelengths of the emitted sub-beams, the N reflected sub-beams are beams formed through reflection after the N emitted sub-beams detect at least one detection object, and N is a positive integer greater than 1;
a wavelength division assembly, configured to obtain, based on the reflected beam, the N reflected sub-beams corresponding to different wavelengths; and
a detector array, configured to output corresponding electrical signals based on the N reflected sub-beams from the wavelength division assembly, wherein
the detector array comprises N detectors, and the N detectors correspond to the N reflected sub-beams.