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:
Sep. 28, 1976
Filed:
Jun. 13, 1975
Applicant:
Inventors:
Kikuo Momiyama, Chofo, JA;
Yujiro Agari, Tokyo, JA;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350214 ; 350176 ; 350207 ;
Abstract
A retrofocus wide-angle objective lens having a range of at least 75.degree. with a large relative aperture and which is corrected for various aberrations and particularly curvature of field at the outer portions of the viewing field.