US 12,405,355 B2
Light-receiving device and method for manufacturing light-receiving device
Makio Kume, Hamamatsu (JP)
Assigned to HAMAMATSU PHOTONICS K.K., Hamamatsu (JP)
Appl. No. 17/310,940
Filed by HAMAMATSU PHOTONICS K.K., Hamamatsu (JP)
PCT Filed Mar. 4, 2020, PCT No. PCT/JP2020/009242
§ 371(c)(1), (2) Date Sep. 1, 2021,
PCT Pub. No. WO2020/179839, PCT Pub. Date Sep. 10, 2020.
Claims priority of application No. 2019-039344 (JP), filed on Mar. 5, 2019.
Prior Publication US 2022/0155417 A1, May 19, 2022
Int. Cl. G01S 7/481 (2006.01); G02B 5/18 (2006.01); H10F 71/00 (2025.01); H10F 77/00 (2025.01); H10F 77/40 (2025.01); H10F 77/50 (2025.01); G02B 27/00 (2006.01); G02B 27/42 (2006.01)
CPC G01S 7/4811 (2013.01) [G02B 5/1857 (2013.01); H10F 71/00 (2025.01); H10F 77/407 (2025.01); H10F 77/50 (2025.01); H10F 77/933 (2025.01); G02B 27/0037 (2013.01); G02B 27/4227 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for manufacturing a light-receiving device, the method comprising:
a first step of preparing a light-receiving element in which a plurality of light-receiving portions are provided, and a glass cover having a first surface and a second surface opposite to the first surface;
a second step of disposing the glass cover above the light-receiving element such that the second surface faces the light-receiving element, after the first step; and
a third step of forming a plurality of light-concentrating elements in the glass cover by irradiating the glass cover with laser light for processing after the second step,
wherein in the third step, the plurality of light-concentrating elements are formed such that each of the plurality of light-concentrating elements concentrates laser light for distance measurement on each of the plurality of light-receiving portions, the laser light for distance measurement incident on the first surface of the glass cover.