Screen and image projection system using the same

Details Screen and image projection system using the same Screen and image projection system using the same

2005-10-26

2008-10-28

Mahoney, Christopher (Department: 2862)

Optical: systems and elements

Projection screen

With reflector or additional screen

Reexamination Certificate

active

07443582

ABSTRACT:
In order to provide a screen having a projection surface on which of external light has little influence and has a large gain, as well as a projection surface that has a wide viewing angle and nature-views, the screen according to the present invention includes a directional diffusion layer for diffusing and transmitting light from a specific direction and linearly transmitting light from other directions, an isotropic diffusion layer for approximately isotropically diffusing light regardless of an incident angle thereof, and a light reflecting layer provided between the directional diffusion layer and the isotropic diffusion layer.

REFERENCES:
patent: 4911529 (1990-03-01), Van De Ven
patent: 6282023 (2001-08-01), Bergman
patent: 6424463 (2002-07-01), Nishitani
patent: 6600600 (2003-07-01), Chen
patent: 2005/0275952 (2005-12-01), Odagiri et al.

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