Side projecting LED signal
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United States of America Patent
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-
Jan 3, 2006
Grant Date -
Jan 8, 2004
app pub date -
May 8, 2003
filing date -
May 30, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A total internal reflection element having a plurality of total internal reflection faces and a plurality of exit faces which redirect light from a light source into a side direction. The total internal reflection element is manufactured by injection molding. The curved entry faces have the optical effect of concentrating incident light onto a center of the corresponding total internal reflection face. This allows light impinging on the total internal reflection face from a wider range of angles to be redirected for side projection through the desired exit face. The total internal reflection element is used in a signal. The signal has a housing and can be placed at a variety of heights.
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