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:
Aug. 25, 2009
Filed:
Jun. 19, 2003
Optical device and display operating in two dimensional and autostereoscopic three dimensional modes
Adrian Marc Simon Jacobs, Littlemore, GB;
Martin David Tillin, Abingdon, GB;
David James Montgomery, Bampton, GB;
Adrian Marc Simon Jacobs, Littlemore, GB;
Martin David Tillin, Abingdon, GB;
David James Montgomery, Bampton, GB;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An optical device comprises an input polarizer, a patterned retarderand an output polarizer. The retarderhas regionsand, at least one of which alters the polarization of light from the input polarizer. The output polarizerhas a transmission axissuch that light passing through the regionsandof the retarderand through the output polarizeris matched in amplitude, phase and polarization. Such a device may be used as a switchable parallax barrier with an LCDto provide a display which is switchable between an autostereoscopic 3D mode and a 2D mode with the 2D mode having more uniform intensity across the display.