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:
Jun. 15, 1982
Filed:
Jun. 18, 1980
Applicant:
Inventors:
Hideyo Nozawa, Ohmiya, JP;
Hideshi Naito, Tokyo, JP;
Assignee:
Nippon Kogaku K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
354126 ; 354196 ; 354198 ;
Abstract
A photographic lens barrel includes display means capable of displaying photographing magnifications, an optical system for imaging the display effected by the display means, and drive means for driving the display means so as to cause the magnification displayed to correspond to the position of a movable focusing lens and for driving a diaphragm blade so as to cause the amount of aperture of the diaphragm blade to correspond to the position of the movable focusing lens.