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. 01, 1982
Filed:
Jun. 17, 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 ...
354 79 ; 354198 ; 354289 ; 354 62 ;
Abstract
A photographic lens comprises a first image forming optical system including focusing lens means movable in the direction of the optical axis thereof, operating means for driving the focusing lens means, display means capable of displaying the magnification of an object image formed by the first image forming optical system, a second image forming optical system for imaging the display effected by the display means, and means for driving the display means in response to the driving of the focusing lens means by the operating means to cause the magnification display by said display means to correspond to the position of the focusing lens means.