Transmissive screen and rear projector

Details Transmissive screen and rear projector Transmissive screen and rear projector

2005-09-20

2005-09-20

Nguyen, Judy (Department: 2851)

Optical: systems and elements

Projection screen

Unitary sheet comprising plural refracting areas

C359S460000, C359S742000

Reexamination Certificate

active

06947212

ABSTRACT:
The invention provides a transmissive screen that can be manufactured at a low cost and show uniform diffusion and moire-free images over the entire screen, and provides a rear projector provided with such a superior transmissive screen. A transmissive screen can include a Fresnel lens portion having Fresnel-lens components on its light-exiting face and a lens array facing the light-exiting face of the Fresnel lens portion and having many lenses on its light-incident face. The transmissive screen can further include separating device for separating the Fresnel lens portion from the lens array portion at least in the periphery of the screen. Such a superior transmissive screen can be included in a rear projector.

REFERENCES:
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patent: 5615045 (1997-03-01), Takuma et al.
patent: 2002/0080483 (2002-06-01), Yamaguchi et al.
patent: 1 154 317 (2001-11-01), None
patent: 2000-131506 (2000-05-01), None
patent: A 2002-107829 (2002-04-01), None
patent: WO 00/60412 (2000-10-01), None

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