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:
Oct. 20, 1981
Filed:
Nov. 14, 1979
Applicant:
Inventor:
Hiroshi Ikeda, Aichi, JP;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ; G03B / ;
U.S. Cl.
CPC ...
355 57 ; 355-8 ; 355 66 ;
Abstract
For end positions of the elements of an minute adjustment of the optical system set for magnifications having the same conjugate distance, the focal adjustment for one of two magnification modes is first performed by adjusting the position of a mirror assembly, and the adjustment for the other magnification mode is performed only by adjusting the end position of the lens assembly at the position for the other magnification mode. Hence, during the change of the magnification modes from one to the other the position of the mirror assembly per se remains unchanged.