SELECTIVE OUTPUT WAVE-GUIDE
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United States of America Patent
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Issued Date -
Oct 14, 2004
app pub date -
Apr 11, 2003
filing date -
Apr 11, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The subject invention comprises a lighting assembly that utilizes the combination of a wave-guide and a Fresnel prism to advantageously direct light emitted from a light source. An exemplary embodiment of the subject invention comprises a light source, a wedge shaped wave-guide and a Fresnel prism. Another exemplary embodiment of the subject invention comprises a light source, a Fresnel wave-guide and a Fresnel prism. In either embodiment, light emitted from the light source passes either from the light source into the wave-guide or through a light pipe into the wave-guide. The wave-guide will select the exiting angle of the light rays so that the light will emit from the wave-guide at approximately the same angle and pass into the Fresnel prism. The Fresnel prism will cause the light to be emitted from the lighting assembly at nearly a normal angle.
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