The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 2020
Filed:
Nov. 02, 2018
Applicant:
SL Corporation, Daegu, KR;
Inventors:
Jong Woon Kim, Gyeongsangbuk-do, KR;
Hyeong Do Kim, Gyeongsangbuk-do, KR;
Assignee:
SL Corporation, Daegu, KR;
Primary Examiner:
Int. Cl.
CPC ...
F21S 41/275 (2018.01); B60Q 1/04 (2006.01); F21S 41/147 (2018.01); F21Y 115/10 (2016.01); F21S 41/143 (2018.01);
U.S. Cl.
CPC ...
F21S 41/275 (2018.01); B60Q 1/04 (2013.01); F21S 41/147 (2018.01); F21S 41/143 (2018.01); F21Y 2115/10 (2016.08);
Abstract
An optical system is provided. The optical system includes a first lens and a second lens disposed in front of the first lens. In particular, the second lens has a concave incidence surface, a curvature ratio between the first lens and the second lens is in a range of about 1.2 to 3.0, and the optical system receives a light emitted by a light-emitting unit in a range of about 60° or more.