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:
Apr. 27, 1982
Filed:
Feb. 19, 1981
Applicant:
Inventors:
Masao Aoyagi, Yokohama, JP;
Shigeru Kamata, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G03B / ; G03B / ;
U.S. Cl.
CPC ...
354286 ; 350255 ; 354272 ;
Abstract
An interchangeable lens assembly for a camera is formed in two parts with the first part being removably attachable to the camera body and the second part being removably attachable to the first part. A diaphragm mechanism is arranged in the second part of the assembly and diaphragm control arms extend through the first part of the assembly into operative connection with the camera. Various operative modifications of the lens assembly are possible and because of the bipartite structure of the lens assembly, greater versatility with regard to interchangeability of operative components is facilitated.