Osram Gmbh

Osram Gesellschaft MIT Beschraenkter Haftung

Osram Ag

Nico Morgenbrod

Ulrich Hartwig

Henning Rehn

Matthias Morkel

Mathias Bruemmer

Ralph Bertram

Dirk Berben

Oskar Schallmoser

Norbert Magg

Stefan Hadrath

Klaus Finsterbusch

Nadir Farchtchian

Tobias Gleitsmann

Andreas Lovich

Al Ma

Georg Forster

An apparatus for sterilizing a liquid comprises a container having an inlet, an outlet and an interior with an outer wall, and a light source adapted to emit radiation in the ultraviolet wavelength range through the outer wall into the interior, the outer wall being partially transparent. The inlet comprises an opening, positioned in relation to the outer wall of the interior and the light source in order, when a pressure is exerted on the liquid to be admitted through the opening and to be sterilized, to form a liquid jet directed onto the outer wall in a region of the light source, above the latter, and/or to form a liquid film there. The liquid jet impinging on the outer wall may flow down thereon as a thin liquid film in front of the light source and thereby effectively sterilized even with a low penetration depth of the UV radiation.

Apparatus for sterilizing a liquid

A solar simulator with at least one lamp module, where the luminous module contains multiple light generating units is disclosed. Each of the light generating units contain at least one semiconductor light source, which generate light in a plurality of separately controllable wavelength ranges. Disposed downstream from the light generating units is a light-concentrating primary optical unit. A light-homogenizing secondary optical unit is likewise disposed downstream of the light generating units. And an imaging tertiary optical unit is disposed downstream of the secondary optical unit. A method for operating the solar simulator and the light generating units in such a way that the solar simulator generates light radiation that alters over time is also disclosed.

Solar simulator and method for operating a solar simulator

A phosphor device () comprising a carrier member () having upper and lower faces; a phosphor layer () being arranged at the upper face of the carrier member (), whereby the phosphor layer () comprises at least one phosphor zone (R; G; Y); a reflective zone () being arranged adjacent to the at least one phosphor zone (R; G; Y); an optical transmitting member () having a first end face () and a second end face (), the optical transmitting member () being arranged at the top portion of the phosphor layer () and the reflective zone (), whereby wherein the first end face () of the optical transmitting member () covers at least a subarea () of each of the at least one phosphor zone (R; G; Y) and the reflective zone ().

Phosphor device and lighting apparatus comprising the same

A dual fluorescent wheel with two disk-shaped carrier elements which are interconnected by wing-type cooling ribs is disclosed. When the dual fluorescent wheel rotates, air flows in through an axial opening in one of the carrier elements, the air flows radially through the interspace between the carrier elements or the wing-type cooling ribs and flows out at the edge. This airflow improves the dissipation of heat which is produced when an excitation laser irradiates the annular fluorescent strips located on the two exterior faces.

Internally cooled fluorescent device and reflector lamp arrangement including said fluorescent device

A phosphor device () comprising a carrier member () having upper and lower faces; a phosphor layer () being arranged at the upper face of the carrier member (), wherein the phosphor layer () comprises at least two tiled phosphor zones (R, G, B); an optical transmitting member () having a first end face () and a second end face (), the optical transmitting member () being arranged at the top portion of the phosphor layer (), whereby the first end face () of the optical transmitting member () covers at least a subarea () of each of the at least two phosphor zones (R, G, B).

The present invention relates to a light source unit having at least one LED sub light source unit. Each LED sub light source unit includes three types of LEDs: phosphor converted green LED, orange-red LED with a wavelength of 614 nm-622 nm, and blue LED with a wavelength of 460 nm-476 nm. Light generated by the three types of LEDs is mixed to generate white light.

Light source unit, an illuminating device equipped with the light source unit and medical equipment

A projection device (), comprising a base (), a support () and a projection head (), the support () being rotatable relative to the base () and relative to the projection head () wherein a light guide system (-) is accommodated in the support, () and at least one wavelength-converting luminophore () for converting at least part of a light beam (L) generated by the at least one light source () is accommodated in the projection head ().

Projection device and method for operating a projection device

A light source unit comprising: a pump light source () for an emission of pump light (), a phosphor element () for a conversion of said pump light () into converted light (), an optical system () for transmitting at least a part of said converted light () for further use, wherein at least a part of said pump light () is coupled into said optical system () and transmitted by said optical system () to said phosphor element () for said conversion.

Light source unit with phosphor element

The invention concerns a light source unit of tunable spectral properties, having a pump light source and a phosphor element for a conversion of pump light into converted light intended for illuminating a target, wherein the phosphor element has at least two phosphor element sections interacting differently with pump light, and wherein the light source unit further comprises a deflecting unit, such as a zoom lens or a variable diffraction grating, for deflecting the pump light so as to vary a distribution of pump light incident onto the phosphor element with respect to the different phosphor element sections, in order to vary spectral properties of the combined converted light beam emanating from the light source unit.

Colour-tunable light source unit with phosphor element

Reflector of lamp

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

A method for setting a color location is provided. The method may include providing n luminous sources of which n-3 luminous sources have been, or are preset; determining a color location difference of the n luminous sources from a desired color location; and setting the 3 luminous sources not preset are set such that the desired color location is achieved.

Method and arrangement for adjusting a color location, and illumination system

A method for setting a color locus of at least one luminous source is provided. The method may include determining a temperature, and setting the color locus of the at least one luminous source depending on the temperature determined.

Method and arrangement for setting a color locus, and luminous system

The invention relates to a lighting device to be installed in and/or behind a panel (), in particular ceiling and/or wall cladding, comprising at least one fitted lamp () having at least one housing () which ends approximately flush with the panel (), at least one light exit surface () and at least one LED module (), the LED module () comprising at least one light-emitting diode (LED) (). At least one ventilation opening () is arranged between the light exit surface () and the housing () and means () are provided for generating an air flow through the ventilation opening ().

Growing community of inventors

Berlin, Germany

Nico Morgenbrod