Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 26, 2011
Patent Application Number
11187841
Date Filed
July 25, 2005
Patent Citations Received
Patent Primary Examiner
Patent 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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