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:
Apr. 10, 2012
Filed:
Dec. 21, 2005
Applicants:
Casimer M. Decusatis, Poughkeepsie, NY (US);
Timothy M. Trifilo, Poughkeepsie, NY (US);
Inventors:
Casimer M. DeCusatis, Poughkeepsie, NY (US);
Timothy M. Trifilo, Poughkeepsie, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a stereographic projector that places a single linear polarizing wheel in the light path of the projector to impart a desired polarization state onto the projected light, a method and apparatus for periodically slowing the wheel down while in optimal states, and accelerating through invalid states. Stereo separation is greatly increased providing a marked improvement in visual quality and perceived depth when this invention is applied to such a polarizing filter wheel.