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:
Jan. 26, 2021
Filed:
Dec. 19, 2018
Applicant:
Zhejiang Sunny Optical Co., Ltd., Ningbo, CN;
Inventors:
Kaiyuan Zhang, Ningbo, CN;
Yuanlin Jia, Ningbo, CN;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 9/62 (2006.01); G02B 13/18 (2006.01); G02B 13/00 (2006.01); G02B 13/04 (2006.01);
U.S. Cl.
CPC ...
G02B 13/0045 (2013.01); G02B 9/62 (2013.01); G02B 13/04 (2013.01);
Abstract
The present disclosure discloses an optical imaging system. The optical imaging system includes, sequentially along an optical axis from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. Each of the first lens and the fourth lens may have a negative refractive power. Each of the second lens and the sixth lens may have a positive refractive power or a negative refractive power. An effective focal length fof the third lens and an effective focal length fof the fifth lens may satisfy: 0<f/f<0.8.