| Method to Improve Projection Screen Contrast and Picture Quality in a Lighted Surrounding 
Description A front projection screen for pictorially displaying upon a front face of the screen an image projected onto the front face from a projector comprises a backing member having a front reflective surface and a polarization rotation plate overlaying the reflective surface for rotating the plane of polarization of light reflected from the surface. A sheet of lenticular lenses overlays the polarization rotation plate and a polarizing film overlays the lenticular lens sheet. The polarizing film has non-polarizing segments at a focal point of each of the lenticular lenses so that light from the projector is not attenuated by the film while light from other sources is attenuated. Advantages - High contrast ratio under high ambient light conditions
- Improved efficiency
- Large viewing angle
Potential Applications Can be used for optimizing the quality of a projector/projection screen arrangement where lighted surroundings are a factor. Some examples include: - Airplanes
- Conference rooms
- Class/lecture rooms
- Restaurants/Bars
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Updated August 9, 2008 | 
