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:
Feb. 17, 1998
Filed:
Apr. 30, 1996
Applicant:
Inventor:
Yoshiro Kodaka, Kawasaki, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
359694 ; 359699 ; 359823 ;
Abstract
A lens barrel has a movable lens unit movable in an optical-axis direction, a lens moving member for moving the movable lens unit and a frictional force applying member for applying a frictional force on the lens moving member so that a quantity of force for operating the lens moving member remains the same irrespective of a magnitude of the moving force for moving the movable lens unit.