Projection screen and projection system comprising the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 9, 2007
Grant Date -
Jun 9, 2005
app pub date -
Sep 7, 2004
filing date -
Sep 8, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A projection screen including a polarized-light selective reflection layer having a cholesteric liquid crystalline structure that causes selective diffuse-reflection of a specific polarize-light component, and a substrate for supporting the polarized-light selective reflection layer. The polarized-light selective reflection layer includes three partial selective reflection layers that are layered one over another, and each partial selective reflection layer has a cholesteric liquid crystalline structure that causes selective diffuse-reflection of a specific polarized light component. In the polarized-light selective reflection layer, three partial selective reflection layers that reflect light in the green (G) color wave range, red (R) color wave range, and blue (B) color wave range are layered in this order, the firstly-mentioned partial selective reflection layer being on the observation side. Namely, the partial selective reflection layer for selectively reflecting light in the green (G) color wave range is arranged as the outermost layer on the observation side.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully