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:
Jul. 08, 2025
Filed:
Jul. 21, 2022
Applicant:
Largan Precision Co., Ltd., Taichung, TW;
Inventor:
Tzu-Chieh Kuo, Taichung, TW;
Assignee:
LARGAN PRECISION CO., LTD., Taichung, TW;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 13/16 (2006.01); G02B 13/18 (2006.01); G02B 15/20 (2006.01);
U.S. Cl.
CPC ...
G02B 13/16 (2013.01); G02B 13/18 (2013.01); G02B 15/20 (2013.01);
Abstract
A projection lens system includes two lens elements being, in order from a magnification side to a reduction side along an optical path, a first lens element, and a second lens element. Each of the two lens elements has a magnification-side surface facing the magnification side and a reduction-side surface facing the reduction side. At least one of the magnification-side surface and the reduction-side surface of at least one of the two lens elements is aspheric.