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:
Oct. 14, 2003
Filed:
Dec. 12, 2002
Applicant:
Inventor:
Thomas J. Anhalt, Goleta, CA (US);
Assignee:
Karl Storz Imaging, Inc., Goleta, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 1/514 ; G02B 7/02 ; A61B 1/00 ;
U.S. Cl.
CPC ...
G02B 1/514 ; G02B 7/02 ; A61B 1/00 ;
Abstract
The invention relates to a magnetic drive focusing device with at least one lens within a chamber and an adjuster with magnets outside the chamber. Positioned between the lens and the chamber is a second sleeve with helical guide paths. As the adjuster is moved outside the chamber, the magnetic field within the chamber causes the lens within the chamber to move. As the lens rotates, non-magnetic guides which ride in the helical guide paths force the lens to move axially within the device.