Enhanced electroluminescent sign
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United States of America Patent
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Issued Date -
Sep 28, 2006
app pub date -
Nov 17, 2005
filing date -
Nov 17, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An enhanced electroluminescent sign containing a volumetric, anisotropic scattering element to control the angular spread of light from the sign and the spatial luminance uniformity of the sign. The anisotropic scattering element contains one or more regions of asymmetrically-shaped light scattering particles. The angular spread of light leaving a sign from a light emitting source can be efficiently controlled by using a thin, low cost, volumetric, anisotropic scattering elements to angularly and spatially distribute light, permitting the reduction in number of light sources, a reduction in power requirements, or a more tailored viewing angle.
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Cited Art Landscape
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