Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With reflector – opaque mask – or optical element integral...
Reexamination Certificate
2006-07-11
2006-07-11
Mondt, Johannes P. (Department: 3663)
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
With reflector, opaque mask, or optical element integral...
C257S099000, C257S100000
Reexamination Certificate
active
07075116
ABSTRACT:
An ultraviolet ray emitting element, a blue color converting layer containing a blue color light emitting fluorescent material that is excited by ultraviolet rays and emits blue light, a green color converting layer as the same and a red color converting layer as the same are prepared, and the blue color converting layer, the green color converting layer and the red color converting layer are stacked on the ultraviolet ray emitting element in this order. Consequently, it is possible to easily obtain white light that has high color rendering properties. In order to obtain white color that exerts high color rendering properties, the average particle sizes of the fluorescent materials are preferably made greater in the order of the blue color light emitting fluorescent material, the green color light emitting fluorescent material and the red color light emitting fluorescent material.
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Mondt Johannes P.
Rabin & Berdo P.C.
Rohm & Co., Ltd.
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