Osram Gmbh

Osram Opto Semiconductors Gmbh

Osram Ag

Osram Gesellschaft MIT Beschraenkter Haftung

Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh

Dirk Berben

Frank Jermann

Martin Zachau

Ulrich Hartwig

Norwin Von Malm

Dominik Eisert

Tim Fiedler

Benjamin Krummacher

Nico Morgenbrod

Joerg Frischeisen

Stefan Lange

Moritz Engl

Norbert Linder

Homer Antoniadis

Henrike Streppel

Raimund Oberschmid

Matthias Morkel

Florian Schindler

Günter Huber

Renate Hirrle

Mathias Bruemmer

Guenter Huber

Michael Schoewel

Benjamin Claus Krummacher

Antoniadis Homer

A lighting may include at least one semiconductor light source which emits primary light, at least one phosphor region spaced apart from the at least one semiconductor light source and serving for at least partly converting the primary light into secondary light, and at least one filter disposed downstream of the at least one phosphor region, wherein the at least one filter is partly reflective at least to the primary light.

Lighting device with semiconductor light source and spaced-apart phosphor region

An LED illumination device includes a wavelength converting element having a matrix material, at least one phosphor, and a thermochromic dye component or a phase change medium component.

LED illumination device having wavelength converting element

A lighting device may include at least one phosphor region which can be irradiated by a primary light source, and at least one optical filter region which can be disposed downstream of the at least one phosphor region, wherein the at least one phosphor region and the at least one filter region are arranged at a different level on a common support wheel.

Wavelength conversion through remote phosphor on a support wheel

This invention relates to a phosphor assembly with a phosphor element for converting pump light into converted light, and an optical system for transmitting converted light and/or pump light. Therein, a liquid immersion material is provided in a gap between the phosphor element and the optical system, wherein an excess of immersion material enables a continuous exchange of the material in the gap and thus provides a cooling.

Phosphor assembly with phosphor element and optical system

A light system based on at least two chips, in particular LEDs containing chips may include at least one first chip capable of emitting a primary radiation, a layer containing a phosphor mounted in front of the first chip, for converting the primary radiation of the first chip into secondary radiation, at least one second chip capable of emitting a second primary radiation with a greater wavelength than the primary radiation, wherein the layer is arranged spaced apart from the first chip, wherein the second chip is arranged in such a way that its radiation is substantially not absorbed by the phosphor.

Light system with increased efficiency

A method for manufacturing a phosphor device may include: providing an optical transmitting member having a first end face and a second end face, whereby the optical transmitting member is designed for guiding exciting light entering through the first end face onto a phosphor layer arranged on the second end face, whereby at least a part of the exciting light is being wavelength-converted by the phosphor layer, and whereby the optical transmitting member is further designed for at least partially collecting and guiding the light converted by the phosphor layer; attaching an optically transparent electrode on the second end face of the optical transmitting member; providing a phosphor and a counter-electrode designed for electrophoretic deposition of the phosphor; and depositing a phosphor layer on the optically transparent electrode by means of electrophoretic deposition, thereby using the optically transparent electrode as a coating electrode.

Method for manufacturing a phospor device and lighting apparatus comprising such phosphor device

A light source unit may include a cooling device; a luminescent substance; an excitation radiation source having a laser source; and an optical element arranged between the radiation source and the substance; wherein the cooling device constitutes a heat sink, wherein the substance is linked thermally to the heat sink; and wherein the optical element is designed as an integrating optical element and is coupled between the radiation source and the substance in such a manner that a part of the radiation emitted by the radiation source, entering in an acceptance angle range of the integrating optical element, is subjected to an internal reflection in the optical element before it exits the optical element and strikes the substance, and that a part of the radiation emitted by the substance enters the optical element and exits the optical element as effective radiation.

Light source unit and projector having such a light source unit

An optoelectronic component comprises an organic layer sequence (), which emits an electromagnetic radiation () having a first wavelength spectrum during operation, and also a dielectric layer sequence () and a wavelength conversion region () in the beam path of the electromagnetic radiation () emitted by the organic layer sequence (). The wavelength conversion region () is configured to convert at least partially electromagnetic radiation having the first wavelength spectrum into an electromagnetic radiation () having a second wavelength spectrum. The dielectric layer sequence () is arranged in the beam path of the electromagnetic radiation () emitted by the organic layer sequence between the organic layer sequence () and the wavelength conversion region () and is at least partially opaque to an electromagnetic radiation having a third wavelength spectrum, which corresponds to at least one part of the second wavelength spectrum.

Optoelectronic component

A luminescent device is disclosed comprising a luminescent substance for the conversion of pump light, wherein a scattering body which scatters the pump light is provided. The pump light input into the scattering body may first be scattered at inert scatterers provided in the scattering body and subsequently converted. Light scattered at luminescent particles may also be simultaneously converted.

Luminescent device for the conversion of pump light

An optoelectronic component with a semiconductor body that comprises an active semiconductor layer sequence is disclosed, which is suitable for generating electromagnetic radiation of a first wavelength that is emitted from a front face of the semiconductor body. The component also comprises a first wavelength conversion substance following the semiconductor body in its direction of emission, which converts radiation of the first wavelength into radiation of a second wavelength different from the first wavelength, and a first selectively reflecting layer between the active semiconductor layer sequence and the first wavelength conversion substance that selectively reflects radiation of the second wavelength and is transparent to radiation of the first wavelength.

In various embodiments, a conversion LED is provided. The conversion LED may include a chip on which a first layer containing a fluorescent substance is deposited, a second layer containing a second fluorescent substance being deposited on said first layer, wherein the first layer is a potting material in which the first fluorescent substance is dispersed, and wherein the second layer is a solid body, said first layer being provided with a spacer.

Conversion LED

An apparatus device such as a light source is disclosed which has an OLED device and a structured luminescence conversion layer deposited on the substrate or transparent electrode of said OLED device and on the exterior of said OLED device. The structured luminescence conversion layer contains regions such as color-changing and non-color-changing regions with particular shapes arranged in a particular pattern.

Structured luminescence conversion layer

A conversion LED is provided. The conversion LED may include a primary light source which emits in the short-wave radiation range below 420 nm, and a luminophore placed in front of it consisting of the BAM system as a host lattice for at least partial conversion of the light source's radiation into longer-wave radiation, wherein the BAM luminophore is applied as a thin layer having a thickness of at most 50 &#x3bc;m directly on the surface of the light source, the BAM luminophore having the general stoichiometry (M1&#x2212;r Mgr)O*k(Al2O3), where r=0.4 to 0.6 and M=EAeEu1&#x2212;e, with EA=Ba, Sr, Ca, and e=0.52 to 0.8, and k=1.5 to 4.5.

A semiconductor chip comprises: a semiconductor body which comprises a semiconductor layer sequence suitable for emitting electromagnetic radiation of a first wavelength range from its front side; and a first wavelength-converting layer on at least one first partial region of the front side of the semiconductor body with a first wavelength conversion substance, which converts radiation of the first wavelength range into radiation of a second wavelength range, which is different from the first wavelength range, wherein at least one second partial region of the front side is free of the first wavelength-converting layer. An optoelectronic component comprising such a semiconductor chip and a method for producing the semiconductor chip are furthermore described.

Optoelectronic semiconductor chip comprising a wavelength conversion substance, and optoelectronic semiconductor component comprising such a semiconductor chip, and method for producing the optoelectronic semiconductor chip

An illumination system for imaging illumination having at least one compact light source. The illumination system comprises a reflector having a reflector contour, the light source being accommodated in the vicinity of the reflector contour. A compact diffusing medium is accommodated at the focal point of the reflector, the light from the light sources being directed substantially onto the diffusing medium and, from there, being diffused onto the reflector contour, with the result that the light leaving the reflector is emitted homogeneously.

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Herdecke, Germany

Dirk Berben