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:
Mar. 28, 2023
Filed:
Sep. 20, 2018
Applicant:
Zhejiang Sunny Optical Co., Ltd., Ningbo, CN;
Inventors:
Saifeng Lyu, Ningbo, CN;
Jianke Wenren, Ningbo, CN;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 13/00 (2006.01); G06V 40/13 (2022.01); G02B 5/20 (2006.01);
U.S. Cl.
CPC ...
G02B 13/0025 (2013.01); G02B 5/20 (2013.01); G02B 13/006 (2013.01); G06V 40/1324 (2022.01);
Abstract
An optical system, sequentially from an object side to an image side along an optical axis, includes: an glass screen (E), an interference screen (S), a lens group, and a color filter (E). An effective focal length f of the optical system and an entrance pupil diameter EPD of the optical system satisfy f/EPD<1.8. The optical system may be used for fingerprint recognition, and has characteristics such as a large field of view, a larger aperture, and an ultra-thin feature, etc.