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:
Aug. 17, 1976
Filed:
Jul. 29, 1974
Applicant:
Inventor:
John A Lawson, Scarborough, CA;
Assignee:
Optigon Research & Development Corporation, Santa Monica, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
350214 ; 350176 ; 350255 ;
Abstract
A wide angle lens of the retrofocus type comprising six lens groups in front and rear groupings. The rear grouping is movable forward while the front grouping is stationary to focus the lens to within ten equivalent focal lengths of the lens.