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:
Aug. 01, 2023
Filed:
Nov. 08, 2018
Zhejiang Sunny Optical, Co., Ltd, Zhejiang, CN;
Xinquan Wang, Zhejiang, CN;
Lin Huang, Zhejiang, CN;
ZHEJIANG SUNNY OPTICAL, CO., LTD, Zhejiang, CN;
Abstract
The disclosure discloses a projection lens, which sequentially includes a first lens, a second lens and a third lens from an image source side to an imaging side along an optical axis. The first lens has a positive refractive power, and a surface near the image source side thereof is a convex surface. The second lens has a positive refractive power or negative refractive power. The third lens has a positive refractive power is a meniscus lens of which a surface near the imaging side is a convex surface. An image source height ImgH of the projection lens and a total effective focal length f of the projection lens meet ImgH/f<0.2.