Projection screen and projection system comprising the same

Details Projection screen and projection system comprising the same Projection screen and projection system comprising the same

2007-03-20

2007-03-20

Perkey, W. B. (Department: 2851)

Optical: systems and elements

Projection screen

Unitary sheet comprising plural reflecting areas

C359S492010, C359S599000, C359S487030, C349S185000, C349S087000, C349S096000, C349S176000, C349S115000

Reexamination Certificate

active

10934767

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 polarized-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, each of which contains molecules of a liquid crystal made from an organic compound, forming an organic film as a whole, and has a cholesteric liquid crystalline structure that causes selective diffuse-reflection of a specific polarized-light component. Each partial selective reflection layer of the polarized-light selective reflection layer is ordered according to wavelength of the range of light reflected. Beginning from the observation side, the order is as follows: blue (B) color wave range, green (G) color wave range, and red (R) color wave range.

REFERENCES:
patent: 5486884 (1996-01-01), De Vaan
patent: 6381068 (2002-04-01), Harada et al.
patent: 6693686 (2004-02-01), Umeya
patent: 6906764 (2005-06-01), Kashima et al.
patent: 2005/0041285 (2005-02-01), Umeya
patent: 648048 (1995-04-01), None
patent: 1046934 (2000-10-01), None
patent: 1286189 (2003-02-01), None

Affiliated with

Also associated with

Rating

Projection screen and projection system comprising the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Projection screen and projection system comprising the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Projection screen and projection system comprising the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3743275