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:
Nov. 14, 2000
Filed:
May. 21, 1998
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369112 ; 369 4414 ; 369 4417 ;
Abstract
The present invention relates to an optical characteristics switching mechanism for switching optical characteristics of an optical system by selectively locating an optical element in an optical path of the optical system. The optical characteristics switching mechanism of the present invention comprises optical characteristics switching element for selectively arranging a holder holding the optical element at either of a first position at which the optical element exists in the optical path and a second position at which the optical element is out of the optical path, by rotating the holder with use of a magnetic force.