Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 19, 2006
Patent Application Number
09937664
Date Filed
March 28, 2000
Patent Citations Received
Patent Primary Examiner
Patent abstract
A surface illuminant comprises a light source 11 consisting of LEDs, a light guide plate 12 which is optically coupled to said light source for guiding the light to one side thereof and a reflective film 13 which is disposed on the other opposite side of said light guide plate. The light guide plate 12 is made of a material into which a wave length converting material 14 or a light storage material 15 such as fluorescent material is incorporated. A desired color light can be obtained by converting the wave length of the light from the light source 11 or light can be emitted by storing the light when the light source is turned off.
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