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:
Dec. 23, 1997
Filed:
Jan. 09, 1997
Applicant:
Inventors:
Akio Omiya, Saitama-ken, JP;
Takashi Kamoda, Saitama-ken, JP;
Assignee:
Fuji Photo Optical Co., Ltd., Saitama-ken, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G02B / ;
U.S. Cl.
CPC ...
396 83 ; 359700 ; 359701 ; 359826 ;
Abstract
A lens barrel for a zoom lens having front and rear lens groups has a rotary barrel which is rotatable about the optical axis and moves the front lens group in the direction of the optical axis in response to its rotation. A focusing cam groove formed on the inner surface of the rotary barrel guides the rear lens group to focus the zoom lens in response to rotation of the rotary barrel, and a zooming can groove formed on the inner surface of the rotary barrel in parallel to the focusing cam groove guides the rear lens group to zoom the zoom lens in response to rotation of the rotary barrel.