Projection screen for large screen pictorial display

Details Projection screen for large screen pictorial display Projection screen for large screen pictorial display

1996-01-24

1997-04-29

Metjahic, Safet

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

359443, 359451, 264134, 264136, G03B 2160

Patent

active

056254890

ABSTRACT:
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.

REFERENCES:
patent: 3462214 (1969-08-01), Glenn
patent: 3463954 (1969-08-01), Glenn

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