Osram Ag

Patent-treuhand-gesellschaft F. Elektrische Gluehlampen Mbh

Siteco Gmbh

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Osram Gmbh

Stefan Kotter

Angela Eberhardt

Stefan Juengst

Roland Huettinger

Steffen Walter

Klaus Stockwald

Peter Munzert

Dirk Salz

Roland Hüttinger

Juergen Heider

Stefan Jüngst

Khanh Pham Gia

Hartmuth Bastian

Mark Schürmann

Paul Braun

Reinhold Schmidt

Reinhard Schaefer

A reflector element and a method for manufacturing a reflector element are disclosed. In an embodiment the reflector element includes a plastic substrate and a silver layer arranged on the plastic substrate. The reflector element further includes a first barrier layer arranged on the silver layer, wherein the barrier layer has an at least 15 nm-thick oxide layer and a second barrier layer arranged on the first barrier layer, wherein the barrier layer includes siloxane, and wherein a thickness of the second barrier layer is at least 250 nm and at most 450 nm.

Reflector element and a method for manufacturing same

A high pressure discharge lamp may include a ceramic discharge vessel and a longitudinal axis, wherein at least one electrode is led out of the discharge vessel by means of a metal-containing feed-through, wherein the feed-through is connected to one end of the discharge vessel by way of a ceramic-containing adjustment part, wherein the adjustment part is tubular and consists of individual layers with different compositions, at least two materials A and B forming a plurality of layers of the adjustment part, these materials being chosen such that their coefficient of thermal expansion is between that of the feed-through and that of the end of the discharge vessel or at most is just outside, the layer thickness of each layer being so low that no shearing forces can occur, and the layer thickness of each layer of the same material being different.

High pressure discharge lamp

A high-pressure discharge lamp may include a ceramic discharge vessel and a longitudinal axis, with electrodes respectively being led out from the discharge vessel by means of a feed-through via capillaries, wherein a tubular cermet part, which consists of individual layers of different composition layered axially in succession, is fitted on the capillary, each layer containing Mo and AlO, the proportion of Mo in the first layer facing toward the capillary being from 3 to 15 vol. % and in the last layer being from 85 to 97 vol. %, and a molybdenum cover cap, the cover cap being welded to the feed-through and the cover cap being connected to the cermet part by means of solder containing metal, and the connection between the capillary and the cermet part being established by means of high-melting glass solder or sinter-active AlOpowder.

Method for producing a metal-halide discharge lamp with a ceramic

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Augsburg, Germany

Stefan Kotter