Projector screen for image projection

Details Projector screen for image projection Projector screen for image projection

2002-10-24

2008-08-26

Lee, Diane I. (Department: 2851)

Optical: systems and elements

Projection screen

Rear projection screen

C359S452000, C359S456000

Reexamination Certificate

active

07417795

ABSTRACT:
The invention relates to a projector screen for image projection, comprising a transparent support (16) which fixes the screen shape and a light-scattering layer, which covers at least one defined projection surface within the screen shape, whereby, in order to reduce the corona effect which degrades the image contrast and the image resolution, the light-scattering layer is embodied as a coating (18) on a very thin transparent film (17). Said film (17) is fixed to the separate support (16) and optically decoupled from the support (16), preferably by means of an air gap (19).

REFERENCES:
patent: 5699131 (1997-12-01), Aoki et al.
patent: 6556347 (2003-04-01), Murayama et al.
patent: 6788460 (2004-09-01), Knox et al.
patent: 2001/0021065 (2001-09-01), Braun
patent: 2002/0080484 (2002-06-01), Moshrefzadeh et al.
patent: 201 11 288 (2001-10-01), None

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