Osram Sylvania Inc.

Osram Opto Semiconductors Gmbh

Nathan M Zink

Madis Raukas

Yi Zheng

George C Wei

Stefan Lange

John F Kelso

Krister Bergenek

Alan Lenef

Alan Piquette

Victor E Perez

Matthew Stough

Karl Krister Bergenek

John Nappi

Madis Raukus

A radiation-emitting component comprising a ceramic material, comprising a garnet having the composition represented by the formula A3-xB5O12:Dx and a barium-containing oxide. In the garnet A3-xB5O12:Dx, A is selected from lutetium, yttrium, gadolinium, terbium, scandium, another rare earth metal or mixtures thereof. B is selected from aluminum, scandium, gallium, indium, boron or mixtures thereof. D is at least one dopant selected from chromium, manganese and rare earth metals, particularly cerium, praseodymium or gadolinium. The dopant is present with x is 0&#x2264;x&#x2264;2.

Garnet material, method for its manufacturing and radiation-emitting component comprising the garnet material

A material, comprising a garnet having the composition represented by the formula ABO:Dand a barium-containing oxide. In the garnet ABO:D, A is selected from lutetium, yttrium, gadolinium, terbium, scandium, another rare earth metal or mixtures thereof. B is selected from aluminum, scandium, gallium, indium, boron or mixtures thereof. D is at least one dopant selected from chromium, manganese and rare earth metals, particularly cerium, praseodymium or gadolinium. The dopant is present with x is 0&#x2266;x&#x2266;2.

A wavelength-conversion plate is described herein. The wavelength conversion plate may include a converter of a first ceramic material and a reflector of a second ceramic material. The first ceramic material converts the primary light emitted by a light source such as a light emitting diode (LED) into a secondary light and the second ceramic material reflects the secondary light emitted by said converter. Preferably, the converter is inlaid into the reflector so that the reflector surrounds an outer edge of the converter. Such a configuration has an advantage of reducing unwanted side emissions from the converter.

Ceramic wavelength-conversion plates and light sources including the same

The present invention relates to a luminescent ceramic converter comprising a sintered, monolithic ceramic material that converts a light of a first wavelength to a light of a second wavelength, the ceramic material having substantially spherically shaped pores. The present invention also relates to methods for the manufacture of the luminescent ceramic converter that comprises the ceramic material having substantially spherically shaped pores.

Luminescent ceramic converter and method of making same

There is herein described a phosphor for use in white pc-LED applications. The phosphor has a composition represented by (YGdCe)(AlSc)Owherein 0&#x3c;x&#x2266;0.3, 0&#x3c;y&#x2266;0.04 and 0&#x3c;z&#x2266;0.3. White pc-LEDs containing the phosphor exhibit less sensitivity to variations in the blue emission of LED dies than pc-LEDs containing conventional YAG:Ce and YGdAG:Ce phosphors. The phosphor may used in multiple pc-LED configurations including as a sintered ceramic converter or applied as a powder dispersed in a silicone encapsulant.

Phosphor and LEDs containing same

A wavelength-converting plate for a wavelength-converted light emitting diode (LED) assembly. The wavelength-converting plate includes multiple layers of microlenses deposited thereon. The microlenses may have an index of refraction different from an index of refraction of the wavelength-converting plate.

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Salem, MA, United States of America

Nathan M Zink