Semiconductor light source with a first and a second LED chip and a first and a second fluorescent substance

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United States of America Patent

PATENT NO 9799633
SERIAL NO

14408240

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Importance

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Abstract

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A semiconductor light source comprising first and second light-emitting diode chips; and a conversion element containing a first phosphor and a second phosphor, wherein the conversion element is disposed downstream of the first and second light-emitting diode chips. The first light-emitting diode chip emits electromagnetic radiation with a first emission maximum. The second light-emitting diode chip emits electromagnetic radiation with a second emission maximum. The first phosphor has a first absorption maximum and a first radiating maximum. The second phosphor has a second absorption maximum, which differs from the first absorption maximum, and a second radiating maximum, which differs from the first radiating maximum. The degree of conversion of the first phosphor for the electromagnetic radiation of the first light-emitting diode chip is greater than the degree of conversion of the second phosphor for the electromagnetic radiation of the first light-emitting diode chip.

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Patent Owner(s)

Patent OwnerAddress
OSRAM OLED GMBHLEIBNIZSTR 4 REGENSBURG 93055

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gärtner, Christian Regensburg, DE 13 58
Markytan, Ales Regensburg, DE 23 158

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