RADIAL LIGHT-EMITTING DIODE LAMP IN FLAT PRINTED CIRCUIT BOARD FORM FACTOR
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United States of America Patent
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Issued Date -
May 12, 2011
app pub date -
Sep 3, 2010
filing date -
Sep 3, 2009
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Abandoned
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Abstract
The present invention is embodied in a radial light-emitting diode (“LED”) lamp in a flat printed circuit hoard (“PCB”) form factor. In one embodiment, the LED lamp comprises a single, two-sided PCB having one or more LEDs on each side of the PCB. Each LED is encapsulated within a casing generally shaped as a linear dome or half cylinder having an axis. The casing may be a substantially homogenous, molded phosphor mixture that emits light upon exposure to the electromagnetic radiation emitted by the LED inside the casing. Because of phosphorescence and surface reflections in the casing, each LED emits light through an angle greater than 180 degrees transverse to the axis of the casing.
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