Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Cang V. Quach0
Date of Patent
December 21, 2010
0Patent Application Number
113676870
Date Filed
March 3, 2006
0Patent Citations Received
...
Patent Primary Examiner
Patent abstract
A display system includes a projection screen and a projector. The projection screen includes a retarder plate between a polarizer and a transparent screen. The projector projects an image through the polarizer and the retarder plate onto the transparent screen. The image is visible from a first side of the transparent screen but invisible from a second side of the transparent screen because any light passing twice through the retarder plate is blocked by the polarizer.
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