LED lamp for light source of lighting device
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United States of America Patent
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Apr 26, 2011
Grant Date -
Feb 2, 2006
app pub date -
Jul 25, 2005
filing date -
Jul 30, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
An LED lamp can be used as a light source of a lighting device. The LED lamp can be combined with a reflecting mirror formed as a paraboloid of revolution, to obtain desired light distribution characteristics, as with a conventional light source. The emission surface of the LED lamp for the light source of the lighting device can be rectangular, and the ratio between a short side and a long side thereof is set in a range of 1:2 to 1:6. Therefore, it is possible to form a light distribution pattern similar to that of a filament, which is conventionally used as an emission source. It is also possible to use almost all light emitted from the LED lamp as illumination light.
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