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:
Apr. 26, 2022
Filed:
Nov. 14, 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:
Assistant Examiner:
Int. Cl.
CPC ...
F21S 41/25 (2018.01); G02B 27/00 (2006.01); G02B 27/09 (2006.01); G02B 13/02 (2006.01); F21S 41/143 (2018.01); F21S 41/265 (2018.01); F21S 41/255 (2018.01); F21S 41/20 (2018.01);
U.S. Cl.
CPC ...
F21S 41/25 (2018.01); F21S 41/143 (2018.01); F21S 41/255 (2018.01); F21S 41/265 (2018.01); F21S 41/285 (2018.01); G02B 13/02 (2013.01); G02B 27/0025 (2013.01); G02B 27/0955 (2013.01);
Abstract
An optical system including a plurality of lenses is provided. In particular, a horizontal field of view and a vertical field of view of the optical system are different from each other, and a horizontal effective focal length (EFL) and a vertical EFL of the optical system are different from each other. In addition, a retro-focus type optical system is formed in one of a horizontal direction or a vertical direction, and a telephoto type optical system is formed in the other of the horizontal direction or the vertical direction such that a beam pattern from a square-shaped light source is extended laterally.