US 11,953,596 B2
LiDAR device
Ji Seong Jeong, Gwangju (KR); Jun Hwan Jang, Seoul (KR); Dong Kyu Kim, Jinju-si (KR); Sung Ui Hwang, Jangseong-gun (KR); Gyeong Hwan Shin, Gwangju (KR); and Bum Sik Won, Seoul (KR)
Assigned to SOS Lab Co., Ltd., Gwangju (KR)
Filed by SOS LAB CO., LTD, Gwangju (KR)
Filed on Sep. 21, 2022, as Appl. No. 17/949,443.
Application 17/949,443 is a continuation of application No. 16/718,345, filed on Dec. 18, 2019, granted, now 11,493,630.
Application 16/718,345 is a continuation of application No. 16/140,272, filed on Sep. 24, 2018, granted, now 10,591,598, issued on Mar. 17, 2020.
Claims priority of provisional application 62/671,305, filed on May 14, 2018.
Claims priority of application No. 10-2018-0002494 (KR), filed on Jan. 8, 2018; application No. 10-2018-0026560 (KR), filed on Mar. 6, 2018; application No. 10-2018-0027385 (KR), filed on Mar. 8, 2018; application No. 10-2018-0081897 (KR), filed on Jul. 13, 2018; application No. 10-2018-0081898 (KR), filed on Jul. 13, 2018; and application No. 10-2018-0100701 (KR), filed on Aug. 27, 2018.
Prior Publication US 2023/0045515 A1, Feb. 9, 2023
Int. Cl. G01S 17/08 (2006.01); G02B 5/09 (2006.01); G02B 26/10 (2006.01); G02B 26/12 (2006.01); G02B 27/09 (2006.01)
CPC G01S 17/08 (2013.01) [G02B 5/09 (2013.01); G02B 26/101 (2013.01); G02B 26/105 (2013.01); G02B 26/12 (2013.01); G02B 27/0955 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A light detection and ranging (LiDAR) device for measuring a distance by using a laser, the LiDAR device comprising:
a laser emitter configured to generate a laser;
a first sensor configured to detect a first light and generate a first result, wherein the first light is a first reflected light of the laser from an object in a scanning area;
a second sensor, separate from the first sensor, configured to detect a second light and generate a second result different from the first result, wherein the second light is a second reflected light of the laser from the object in the scanning area; and
a rotating polygonal mirror configured to rotate about a rotation axis disposed between the first sensor and the second sensor and between the laser emitter and the second sensor,
wherein the rotating polygonal minor comprises at least three reflecting surfaces, including a first reflecting surface and a second reflecting surface,
wherein the first reflecting surface comprises a projection portion and a first receiving portion,
wherein the second reflecting surface comprises a second receiving portion,
wherein, at a first time point:
the first reflecting surface is configured to face the laser emitter and the first sensor without facing the second sensor,
the projection portion is configured to reflect the laser emitted by the laser emitter to the scanning area,
the first receiving portion is configured to receive and reflect the first light directly to the first sensor,
the second reflecting surface is configured to face the second sensor without facing the laser emitter or the first sensor, and
the second receiving portion is configured to receive and reflect the second light directly to the second sensor,
wherein an area of the first receiving portion is smaller than an area of the second receiving portion, and
wherein, at second time points subsequent to the first time point, the first sensor and the second sensor are configured to generate the first result and the second result, respectively.