US 12,189,061 B2
Optical module and distance measuring device
Takashi Kobayashi, Kanagawa (JP); Hirataka Ukai, Kanagawa (JP); and Hiroaki Nishimori, Kanagawa (JP)
Assigned to SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa (JP)
Appl. No. 17/309,271
Filed by SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa (JP)
PCT Filed Aug. 22, 2019, PCT No. PCT/JP2019/032815
§ 371(c)(1), (2) Date May 13, 2021,
PCT Pub. No. WO2020/105239, PCT Pub. Date May 28, 2020.
Claims priority of application No. 2018-218754 (JP), filed on Nov. 22, 2018.
Prior Publication US 2022/0003847 A1, Jan. 6, 2022
Int. Cl. G01C 3/08 (2006.01); G01S 7/481 (2006.01); G01S 17/10 (2020.01); G02B 5/18 (2006.01); G02B 26/08 (2006.01); G02B 26/10 (2006.01)
CPC G01S 7/4817 (2013.01) [G01S 17/10 (2013.01); G02B 5/1866 (2013.01); G02B 26/0833 (2013.01); G02B 26/101 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An optical module comprising:
an optical scanning unit that causes a light beam to scan in a predetermined scanning direction;
an optical conversion unit that converts, by an optical surface, the scanning light beam into a linear light beam in a linear direction substantially orthogonal to the scanning direction; and
a light detection unit that detects reflected light, which is the linear light beam reflected from a target object,
wherein the optical surface has a radius of curvature in the scanning direction that is substantially equal to a distance from a virtual scanning center point in the scanning direction to a center point of the optical surface, regardless of a position in the linear direction.