Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Masanori Umeya0
Date of Patent
October 17, 2006
0Patent Application Number
109125660
Date Filed
August 6, 2004
0Patent Primary Examiner
Patent abstract
A projection screen includes a polarized-light selective reflection layer having a cholesteric liquid crystalline structure, capable of selectively reflecting a specific polarized-light component; and a substrate that supports the polarized-light selective reflection layer. In the cholesteric liquid crystalline structure of the polarized-light selective reflection layer, the helical pitch on the side farther from the imaging-light-incident side is longer than that on the side closer to the imaging-light-incident side.
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