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:
Jul. 03, 1984
Filed:
Mar. 29, 1982
Applicant:
Inventors:
Toshikatsu Takahashi, Kanagawa, JP;
Kazuo Yayama, Tokyo, JP;
Assignees:
Fuji Xerox Co., Ltd., Tokyo, JP;
Tokyo Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
355 60 ; 355 55 ; 355 57 ;
Abstract
A lens focus controlling device for an optical system includes a first cylindrical cam having a cam face formed on at least one end thereof, a second cylindrical cam having a cam face on one end thereof slidably disposed in contact with said first cam face over a predetermined range, a lens group secured to said second cylindrical cam, a stop member operatively engageable with said lens group to prevent rotation while allowing reciprocation of said lens group along the optical axis thereof and a drive system for rotating said first cylindrical cam relative to said second cylindrical cam.