US 11,841,462 B2
LiDAR device
Dong Kyu Kim, Gwangju (KR); Chan M Lim, Yongin-si (KR); and Hoon Il Jeong, Chungcheongnam-do (KR)
Assigned to SOS LAB Co., Ltd., Gwangju (KR)
Filed by SOS LAB Co., Ltd., Gwangju (KR)
Filed on Nov. 19, 2021, as Appl. No. 17/531,524.
Application 17/531,524 is a continuation of application No. 17/325,854, filed on May 20, 2021, granted, now 11,204,412.
Claims priority of application No. 10-2020-0061857 (KR), filed on May 22, 2020; and application No. 10-2020-0180406 (KR), filed on Dec. 22, 2020.
Prior Publication US 2022/0146634 A1, May 12, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 7/48 (2006.01); G01S 7/481 (2006.01); G01S 17/931 (2020.01); G01S 7/4865 (2020.01)
CPC G01S 7/4815 (2013.01) [G01S 7/4816 (2013.01); G01S 7/4865 (2013.01); G01S 17/931 (2020.01)] 14 Claims
OG exemplary drawing
 
1. A LiDAR device comprising:
a transmission module including a laser emitting array, wherein the laser emitting array is configured to emit a plurality of lasers at a first wavelength; and
a reception module including a laser detecting array and a reception optic module, wherein the laser detecting array includes at least two detectors,
wherein the reception optic module comprises:
at least four lens layers including a first lens layer, a second lens layer, a third lens layer and a fourth lens layer; and
a filter layer located between the first lens layer and the second lens layer,
wherein in response to a plurality of parallel light being incident on the reception optic module within a first angle range along a first axis, a second angle range at which a first group of light rays of the plurality of parallel light are incident to a first virtual plane is A to B degree, wherein the first virtual plane is defined as a plane that crosses between the first lens layer and the second lens layer,
wherein in response to the plurality of parallel light being incident on the reception optic module within the first angle range along the first axis, a third angle range at which the first group of light rays of the plurality of parallel light are incident to a second virtual plane is C to D degree, wherein the second virtual plane is defined as a plane that crosses between the third lens layer and the fourth lens layer,
wherein the B-A degree is smaller than the D-C degree,
wherein the filter layer is designed to have a first central wavelength for a light incident on the filter layer at the 0 degree, a second central wavelength for a light incident on the filter layer at the A degree, and a third central wavelength for a light incident on the filter layer at the B degree, and
wherein the first wavelength is smaller than the first central wavelength.