Osram Sylvania Inc.

Osram Opto Semiconductors Gmbh

Osram Gmbh

James A Avallon

Alan Lenef

Jeffery J Serre

Kathleen A Lawson

John W Shaffer

Walter Peter Lapatovich

Gregory Zaslavsky

Angela Eberhardt

John H Selverian

Adam Scotch

Joerg Sorg

Madis Raukas

Darshan Kundaliya

David W Johnston

Nancy H Chen

Florian Peskoller

Dennis Sprenger

Joanne M Browne

Joachim Wirth-Schön

Edgar G Estupiñán

Galina Zilberstein

David Johnston

In an embodiment a conversion element includes a first phase and a second phase, wherein the first phase comprises lutetium, aluminum, oxygen and a rare-earth element, wherein the second phase comprises AlOsingle crystals, and wherein the conversion element comprises at least one groove.

Process of manufacturing a conversion element, conversion element and light emitting device comprising the conversion element

A method of manufacturing a conversion element is disclosed. A precursor material is selected from one or more of lutetium, aluminum and a rare-earth element. The precursor material is mixed with a binder and a solvent to obtain a slurry. A green body is formed from the slurry and the green body is sintered to obtain the conversion element. The sintering is performed at a temperature of more than 1720&#xb0; C.

There is herein described a ceramic wavelength converter having a high reflectivity reflector. The ceramic wavelength converter is capable of converting a primary light into a secondary light and the reflector comprises a reflective metal layer and a dielectric buffer layer between the ceramic wavelength converter and the reflective metal layer. The buffer layer is non-absorbing with respect to the secondary light and has an index of refraction that is less than an index of refraction of the ceramic wavelength converter. Preferably the reflectivity of the reflector is at least 80%, more preferably at least 85% and even more preferably at least 95% with respect to the secondary light emitted by the converter.

Ceramic wavelength converter having a high reflectivity reflector

A method for producing a laser activated remote phosphor (LARP) sub-assembly, which may comprise: preparing a target composed of a material; activating the target such that the material is released from the target; directing the material released from the target in the direction of a wavelength converter and depositing the material released from the target onto a major surface of the wavelength converter creating a bonding film.

Method of bonding a laser activated remote phosphor assembly, method of manufacture and a laser activated remote phosphor assembly

The present disclosure describes metal halide lamps having a discharge vessel, a discharge space, and at least one electrode extending into the discharge vessel in a sealed fashion so as to be in contact with the discharge space. A fill gas, at least one fill material, and optionally at least one volatile material are present in the discharge space. In some cases, the lamps can exhibit at least one of reduced run-up time, increased initial light output, and long life, while remaining useful for general lighting applications. Also described are methods for operating such metal halide lamps.

Metal halide lamps with fast run-up and methods of operating the same

A high intensity arc discharge lamp having a short metal seal plug running hotter than typical of capillary seals, enables a lamp with a metal fill to achieve a vapor pressure higher than the one set by the cold spot temperature typically of a capillary seal lamp. Corrosive fill materials, such as halogens are excluded. Zinc may be used to in starting the lamp.

Short metal vapor ceramic lamp

A fluted feed-through for a discharge lamp includes a fluted ceramic core with plural channels and plural individual molybdenum or tungsten wires running in different ones of the plural channels. The wires are twisted together at the ends of the feed-through. The feed-through is insertable into a capillary tube of a ceramic discharge lamp. The wires of the feed-through have a different thermal coefficient of expansion than the ceramic discharge lamp. The wires are thin enough so that the absolute magnitude of the thermal coefficients of expansion is sufficiently small to prevent seal cracks and leaking.

Discharge lamp having a fluted electrical feed-through

A method for recrystallization of tungsten filaments for incandescent lamps includes the steps of providing a tungsten filament fixed to lead-in wires, providing a light-transmitting glass envelope having a closed first end and an open second end, the first end being closed by an envelope press portion integral with the remainder of the envelope, the press portion having the lead-in wires sealed therein and extending therethrough into the envelope, introducing a forming gas into the envelope, flushing the envelope with infusions of the forming gas, flashing the filament in the presence of the forming gas to recrystallize the filament, evacuating the forming gas from the envelope, introducing fill gas into the envelope, and closing the envelope second end.

Method for recrystallization of tungsten filaments for incandescent lamps

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Beverly, MA, United States of America

James A Avallon