US 11,906,571 B2
Optical detection system and laser light providing module without using an optical fiber
Chien-Yu Chen, Hsinchu County (TW); and Po-Han Peng, Hsinchu County (TW)
Assigned to MPI CORPORATION, Hsinchu County (TW)
Filed by MPI CORPORATION, Hsinchu County (TW)
Filed on Mar. 21, 2022, as Appl. No. 17/700,441.
Claims priority of provisional application 63/164,027, filed on Mar. 22, 2021.
Prior Publication US 2022/0299560 A1, Sep. 22, 2022
Int. Cl. G01R 31/26 (2020.01); G02B 5/00 (2006.01); H01S 5/02212 (2021.01); H01S 5/00 (2006.01)
CPC G01R 31/2635 (2013.01) [G02B 5/005 (2013.01); H01S 5/0085 (2013.01); H01S 5/02212 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An optical detection system, comprising:
a carrier module configured for carrying a plurality of photodiodes;
a laser light providing module configured to be disposed above the carrier module;
an electrical detection module configured to be disposed adjacent to the carrier module; and
an image capturing module configured to be disposed above the carrier module;
wherein the laser light providing module includes a laser chip package structure without using an optical fiber, a first optical lens adjacent to the laser chip package structure, and a beam quantity adjuster adjacent to the first optical lens;
wherein the laser chip package structure is configured for generating a laser light source projected onto the first optical lens, and the first optical lens is configured for converting the laser light source into a laser beam projected onto the beam quantity adjuster, and the beam quantity adjuster is configured for splitting the laser beam into a plurality of projection beams;
wherein, when the projection beams are simultaneously and correspondingly projected onto the photodiodes, the image capturing module is configured for capturing position information of a light spot projected by the projection beam on an active region of a corresponding one of the photodiodes;
wherein, when each of the photodiodes is excited by a corresponding one of the projection beams to correspondingly generate an electrical signal, the electrical detection module is configured for simultaneously and electrically contacting the photodiodes so as to sequentially obtain the electrical signals that are correspondingly generated by the photodiodes.