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. 18, 1992
Filed:
Feb. 20, 1991
Applicant:
Inventor:
Yasunobu Kayanuma, Tokyo, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359699 ; 359696 ; 359700 ;
Abstract
A zoom lens device capable of performing magnification varying and focusing operations by moving part of an optical system. Magnification varying and focusing lens groups guided movably in an optical axis direction by two or more parallel guide shafts. One of the guide shafts is fixed such that it is located inside the extreme side end of a camera main body. Thus, the lens group of the zoom lens can be embedded in the camera main body so as to provide a compact camera. Also, the zoom lens can be assembled simply by inserting parts forming the zoom lens device over the guide shafts, which can improve the assembling of the zoom lens.