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. 06, 1993
Filed:
Jan. 03, 1990
Applicant:
Inventors:
Muneharu Sugiura, Tokyo, JP;
Satoshi Yanagawa, Kanagawa, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359679 ; 359676 ; 359888 ;
Abstract
A photo-taking lens comprises a lens component which allows to exit therefrom a bundle of rays forming the image of an object, a diaphragm which is disposed on the object side of the lens component and has a variable aperture, and an optical filter which is disposed adjacently to the diaphragm and is formed in a curved shape.