Light diffusing laminated plate

Details Light diffusing laminated plate Light diffusing laminated plate

2005-07-12

2005-07-12

Mahoney, Christopher (Department: 2851)

Optical: systems and elements

Projection screen

Embedded particles

C359S457000

Reexamination Certificate

active

06917469

ABSTRACT:
A light diffusing laminated plate including a first light diffusing layer containing particles of a transparent light diffusing material dispersed therein and having a concave cross-section, and a second light diffusing layer containing particles of an opaque light diffusing material dispersed therein and having a convex cross-section. The first and second light diffusing layers are laminated together such that the convex and concave surfaces are face to face contact with each other to form a curved interface therebetween. The first and second light diffusing layers have a substantially uniform cross-section in one direction. A transmissive screen for a rear projection display device having a light image source, including the above light diffusing laminated plate and a lens system disposed such that a light image from the source is projected through the light diffusing laminated plate and the lens system and displayed on the screen.

REFERENCES:
patent: 2906169 (1959-09-01), Saffir
patent: 4773731 (1988-09-01), Goldenberg et al.
patent: 5196960 (1993-03-01), Matsuzaki et al.
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patent: 6502942 (2003-01-01), Mori et al.
patent: 6760155 (2004-07-01), Murayama et al.
patent: 2004/0061935 (2004-04-01), Ohsako et al.

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