Optical: systems and elements – Projection screen – Embedded particles
Reexamination Certificate
2004-03-12
2009-10-13
Mahoney, Christopher (Department: 2862)
Optical: systems and elements
Projection screen
Embedded particles
C359S460000
Reexamination Certificate
active
07602550
ABSTRACT:
The present invention relates to rear-projection screens which have at least one scattering layer encompassing scattering particles and has at least one backing layer, characterized in that the halved-intensity angle of the scattering layer is greater than or equal to 15° and the halved-intensity angle of the backing layer is smaller than or equal to 6.5°, where the gloss R60°of the backing layer is smaller than or equal to 70.
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Groothues Herbert
Parusel Markus
Schmidt Jann
Mahoney Christopher
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Roehm GmbH & Co. KG
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