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. 30, 2019
Filed:
Jul. 07, 2016
Applicant:
Nalux Co., Ltd., Osaka-shi, Osaka, JP;
Inventor:
Norihisa Sakagami, Osaka, JP;
Assignee:
NALUX CO., LTD., Osaka-Shi, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 13/22 (2006.01); G02B 13/04 (2006.01); G03B 11/00 (2006.01);
U.S. Cl.
CPC ...
G03B 11/00 (2013.01); G02B 13/04 (2013.01); G02B 13/22 (2013.01);
Abstract
An optical imaging system according to the present invention includes, in order from an object side to an image side, a first lens with negative refractive power, a second lens that is a meniscus lens having a convex image-side surface, an aperture stop, a third lens with positive refractive power, and a lens group with positive refractive power. When the center thickness of the first lens is represented as t1, the center thickness of the second lens is represented as t2 and the focal length of the whole system is represented as f,1/>1.2 and2/>1.2are satisfied.