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:
Jun. 04, 2002
Filed:
Dec. 27, 2000
Applicant:
Inventors:
Itsuji Minami, Omiya, JP;
Hitoshi Miyano, Omiya, JP;
Assignee:
Fuji Photo Optical Co., Ltd., Saitama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 2/102 ; G02B 1/514 ;
U.S. Cl.
CPC ...
G02B 2/102 ; G02B 1/514 ;
Abstract
In an objective lens mounted to an endoscope having an enlarging function and enabling a switch to wide-field viewing, a movable lens group is moved so as to adjust the amount of curvature of field such that the image quality at marginal parts of a picture becomes favorable according to the form of an object while keeping a substantially constant magnification.