Apparatus for producing a spectrally-shifted light output...

Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With reflector – opaque mask – or optical element integral...

Reexamination Certificate

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C257S100000, C257SE33061

Reexamination Certificate

active

07423296

ABSTRACT:
A lighting device provides a spectrally-shifted light output from a light source. The lighting device includes a semiconductor light emitting device providing a source light and a first thin-film luminescent material layer coating a surface of the semiconductor light emitting device. The first thin-film luminescent material layer includes a luminescent material that emits an emitted light in response to the source light. The first thin-film luminescent material layer has a specific and consistent thickness and specific and consistent density of luminescent particles. The emitted light includes a first luminescent material emitted light when the luminescent material completely absorbs the source light. The emitted light includes a first composite light when the first luminescent material absorbs less than all of the source light. The device may further include a second thin-film luminescent layer coating the first thin-film luminescent layer.

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German Office Action dated Apr. 28, 2005 involving German counterpart application No. 103 58 348.3-33.
English translation of German Office Action dated Apr. 28, 2005 involving German counterpart application No. 103 58 348.3-33.

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