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. 10, 2009
Filed:
Feb. 13, 2007
Applicant:
Hitoshi Miyano, Saitama, JP;
Inventor:
Hitoshi Miyano, Saitama, JP;
Assignee:
Fujinon Corporation, Saitama-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 9/04 (2006.01); G02B 21/02 (2006.01); G02B 23/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
An endoscope objective lens is provided and has a front-group divergent lens system, an aperture stop, and a rear-group convergent lens system in this order from the object side. The back focal length Bf of the whole system is longer than 2.5 times the combined focal length f of the whole system. The rear-group convergent lens system includes a cemented lens. The endoscope objective lens satisfies the specific formula.