US 11,808,890 B2
Distance measuring device and method of measuring distance by using the same
Tatsuhiro Otsuka, Suwon-si (KR); and Jungwoo Kim, Hwaseong-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Mar. 20, 2020, as Appl. No. 16/825,234.
Claims priority of application No. 10-2019-0118377 (KR), filed on Sep. 25, 2019.
Prior Publication US 2021/0088631 A1, Mar. 25, 2021
Int. Cl. G01S 17/26 (2020.01); G01S 7/481 (2006.01); G01S 7/484 (2006.01); G01S 7/4865 (2020.01)
CPC G01S 7/4817 (2013.01) [G01S 7/484 (2013.01); G01S 7/4815 (2013.01); G01S 7/4865 (2013.01); G01S 17/26 (2020.01)] 22 Claims
OG exemplary drawing
 
1. A Light Detection And Ranging (LiDAR) device comprising:
a light scanner configured to periodically scan a region in a surrounding area by sequentially changing a traveling path of incident light;
a first light source configured to provide first light to the light scanner in a first incidence direction; and
a second light source configured to provide second light to the light scanner in a second incidence direction different from the first incidence direction, and
wherein the light scanner is further configured to scan the region in the surrounding area a plurality of times during one scan period of the light scanner using the first light and second light,
wherein the first light source is configured to provide the first light in the first incidence direction on a first surface of the light scanner, and the second light source is configured to provide the second light in the second incidence direction on a second surface of the light scanner different from the first surface of the scanner,
wherein the light scanner comprises a plurality of reflective surfaces, each of the plurality of reflective surfaces is parallel to a central axis of the light scanner or is inclined with respect to the central axis of the light scanner,
wherein the second light source is configured to emit the second light to a second reflective surface different from a first reflective surface among the plurality of reflective surfaces, while the first light source is configured to provide the first light to the first reflective surface among the plurality of reflective surfaces,
wherein the first reflective surface scans a first sub-region of the region in the surrounding area by reflecting the first light sequentially in different directions, and
wherein the second reflective surface scans a second sub-region of the region in the surrounding area different from the first sub-region by reflecting the second light sequentially in different directions.