Osram Opto Semiconductors Gmbh

Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh

Patent-treuhand-gesellschaft F&uuml;r Elektrische Gl&uuml;hlampen Mbh

Other

Patent-treuhand-gesellschaft Fuer Elektrische Gluehlampen Mbh

Osram Opto Semi-conductors Gmbh Co. Ohg

Osram Gmbh

Symyx Technologies, Inc.

Osram Gesellschaft MIT Beschrankter Haftung

Osram Opto Semiconductors Gesellschaft MIT Beschraenkter Haftung

Andries Ellens

Franz Zwaschka

Franz Kummer

Frank Jermann

Alexandra Debray

Michael Ostertag

Wolfgang Rossner

Manfred Kobusch

G&uuml;nter Huber

Günter Waitl

Guenther Waitl

Günter Huber

Dieter Bokor

Tim Fiedler

Martin Devenney

Daniel Mark Giaquinta

Earl Danielson

Torsten Fries

Günther Waitl

Guenter Huber

Karl-Peter Schliep

Robert Mc Sweeney

An illumination device with at least one LED as the light source, the LED emitting primary radiation in the range from 370 to 430 nm of the optical spectral region (peak wavelength), this radiation being partially or completely converted into radiation of a longer wavelength by three phosphors which are exposed to the primary radiation from the LED and which emit in the blue, green and red spectral regions, so that white light is formed. The conversion is achieved at least with the aid of a phosphor which emits blue light with a wavelength maximum at 440 to 485 nm, and with the aid of a phosphor which emits green light with a wavelength maximum at 505 to 550 nm, and with the aid of a phosphor which emits red light with a wavelength maximum at 560 to 670 nm.

Illumination device with at least one LED as the light source

The invention proposes an arrangement of luminescent materials for excitation by means of a radiation source and involving the use of a luminescent material having a Ce-activated garnet structure ABO, in which the first component A contains at least one element from the group consisting of Y, Lu, Sc, La, Gd, Sm and Tb and the second component B represents at least one of the elements Al, Ga and In, and a plurality of the luminescent materials are mixed together.

Arrangement of luminescent materials, wavelength-converting casting compound and light source

The invention relates to a luminescence conversion led based illumination deice that emits primarily radiation in the range of from 370 and 430 nm of the optical spectrum (peak wavelength). Said radiation is converted to radiation having a longer wavelength using three luminescent substances that emit in the red, green and blue range.

The inventive white-light emitting luminescent conversion LED uses a chlorosilicate luminous substance which is doped with europium in addition to containing Ca and Mg and a garnet rare-earth substance, especially Y and/or Tb. This results in high quality color reproduction and highly constant lighting properties at various temperatures.

Led-based illumination unit

The invention proposes an arrangement of luminescent materials for excitation by means of a radiation source and involving the use of a luminescent material having a Ce-activated garnet structure ABO, in which the first component A contains at least one element from the group consisting of Y, Lu, Se, La, Gd, Sm and Tb and the second component B represents at least one of the elements Al, Ga and In, and a plurality of the luminescent materials are mixed together. An associated wavelength-converting casting compound and an associated light-source arrangement are further proposed.

Luminescent array, wavelength-converting sealing material and light source

A phosphor for light sources, the emission from which lies in the short-wave optical spectral region, as a garnet structure ABO. It is activated with Ce, the second component B representing at least one of the elements Al and Ga, and the first component A is terbium or terbium together with at least one of the elements Y, Gd, La and/or Lu. In a preferred embodiment, a phosphor having a garnet of structure (TbRECE)(Al,Ga)O, where 

Phosphor for light sources and associated light source

Illumination device with at least one led as the light source

A phosphor for light sources, the emission from which lies in the short-wave optical spectral region, as a garnet structure ABO. It is activated with Ce, the second component B representing at least one of the elements Al and Ga, and the first component A is terbium or terbium together with at least one of the elements Y, Gd, La and/or Lu. In a preferred embodiment, a phosphor having a garnet of structure (TbRECe)(Al,Ga)O, where 

The inventive white-light emitting luminescent conversion LED uses a chlorosilicate luminous substance which is doped with europium in addition to containing Ca and Mg and a garnet rare-earth substance, especially Y and/or Tb. This results in high quality colour reproduction and highly constant lighting properties at various temperatures.

LED-based white-emitting illumination unit

A device for the generation of specific colored light including white light by luminescent down conversion and additive color mixing based on a light-emitting diode (LED) comprising a semiconductor light-emitting layer emitting near UV light about 370-420 nm or blue light about 420-480 nm and phosphors which absorb completely or partly the light emitted by the light-emitting component and emit light of wavelengths longer than that of the absorbed primary light, wherein the light emitting layer of the light emitting component is preferably a Ga(In)N-based semiconductor; and at least one of the phosphors contains a metal sulfide fluorescent material activated with europium containing at least one element selected from the group consisting of Ba, Sr, Ca, Mg and Zn; and/or at least another phosphor which contains a complex thiometalate fluorescent material activated with either europium, cerium or both europium and cerium containing 1) at least one element selected from the group consisting of Ba, Sr, Ca, Mg and Zn and 2) at least one element selected from the group consisting of Al, Ga, In, Y, La and Gd.

Light emitting device for generating specific colored light, including white light

The planar light source ( ) uses the principle of RGB mixing, the radiation of UV diodes ( ) arranged in a planar fashion being converted by means of phosphors ( ) which emit in the red and green spectral regions. The blue component is added by blue-emitting LEDs ( ) whose radiation is preferably launched as a lateral diode row ( ).

LED-based planar light source

Illumination device with at least one LED as light source, the LED emitting primary radiation in the range from 380 to 420 nm, this radiation being partially or completely converted into longer-wave radiation by phosphors which are exposed to the primary radiation from the LED, the conversion taking place at least with the aid of a phosphor which emits over a broad band and originates from the class of the (Eu,Mn)-coactivated halophosphates, the cation M representing one of the metals Sr, Ca, Ba.

Illumination device with at least one LED as light source

Fluorescent material from the class of the silicide nitrides, Sr being used as cation, and the suicide nitrides being doped with trivalent Ce.

Highly efficient fluorescent material

A high efficiency phosphor from the class of the thiometallates, preferably of the thiogallates. The thiometallate being made so as to correspond to the formula (AS)&middot;w(B S ), where A is at least one divalent cation selected from Mg, Ca, Sr, and where B is at least one trivalent cation selected from Al, Ga, Y. The factor w may lie either in the range 0.8 &lE;w &lE;0.98 or in the range 1.02 &lE;w &lE;1.2.

Growing community of inventors

Munich, Germany

Andries Ellens