Apparatus and method of using an LED light source to generate an efficient, narrow, high-aspect ratio light pattern
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United States of America Patent
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May 17, 2011
Grant Date -
Aug 28, 2008
app pub date -
Apr 25, 2006
filing date -
Apr 28, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An LED light source produces a narrow beam of light having a linear field of illumination, which is substantially uniform across the linear field. The light source comprises at least one light emitting diode (LED) and preferably a plurality of LEDs, an optical element for the efficient collection of energy radiating from the LED or LEDs, and an optical element for distributing the collected energy into the linear field of illumination. The apparatus also includes a device or heat sink for thermal management. One or more electronic control circuits are coupled to the LED or LEDs to variably and selectively control them. When a plurality of LEDs are used, the colors produced by the LEDs may different so that the light source is collectively controllable to provide a range of optically mixed colors.
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