Lumileds LLC

Koninklijke Philips Corporation N.V.

Lumileds Holding B.v.

Rainald Gierth

Claudia Goldmann

Herbert Friedrich Boerner

Petrus Cornelis Paulus Bouten

Peter Van De Weijer

Stefan Peter Grabowski

Hans-Helmut Bechtel

Josef Andreas Schug

Christian Kleijnen

Matthias Heidemann

Ulrich Hechtfischer

Thomas Diederich

The invention describes a light conversion device having a light converter, which is adapted to convert primary light to converted light, so that a peak emission wavelength of the converted light is in a longer wavelength range than a peak emission wavelength of the primary light. The light conversion device also has a reflective structure coupled to at least a part of a coupling surface of the light converter, where the reflective structure is a narrowband reflector arranged to reflect at least some of the primary light impinging on the reflective structure and to transmit at least some of the converted light impinging on the reflective structure.

Reliable light conversion device for laser-based light sources

The disclosure relates to a lighting device. The object to provide a lighting device comprising a light guide, wherein the amount of guided light is further optimized, is solved in that the lighting device comprises: a light-emitting element with a light-emitting face; the light guide having a light entry face, the light guide being configured to guide light emitted by the light-emitting element by means of total internal reflection; and a separator sheet comprising a first face and a second face, wherein the first face is arranged in direct contact to the light entry face, wherein the second face is arranged opposite the light-emitting face, wherein the separator sheet is arranged such that a minimum distance between the light-emitting face and the light entry face is 300 &#x3bc;m or less, and wherein the separator sheet is arranged such that a gap is provided between the light-emitting element and the separator sheet at least in sections. The invention further relates to a method for production of such a lighting device and to an automotive head light comprising an inventive lighting device.

Lighting device comprising separator sheet

Light converting device with ceramic protection layer

The invention describes a light converting device comprising:

Light converting device with clamped light converter

The invention relates to OLEDs () having a substrate (), a first electrode layer (), a layer of organic electroluminescence material (), a second electrode layer (), a cover layer (), moisture-absorbing means () and a separating foil () of resilient material. According to the invention, said foil () is positioned between the second electrode layer () and the moisture-absorbing means (). This feature results in a longer mean life-time of the OLED. Advantageously spacer structures () (preferably formed as dots) are applied on the separating foil () between the foil () and the cover (). This prevents discoloring effects around the rim of the OLED material.

Organic electroluminescence device with separating foil

An organic electroluminescence device (OLED) has a substrate, a first electrode layer, a layer of organic electroluminescence material, a second electrode layer, a cover layer, a moisture-absorber and a separating foil of resilient material. The separating foil is positioned between the second electrode layer and the moisture-absorber. Spacer structures such as dots are applied on the separating foil between the foil and the cover.

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Cologne, Germany

Rainald Gierth