Patent-treuhand-gesellschaft Fuer Elektrische Gluehlampen Mbh

Osram Opto Semiconductors Gmbh

Osram Gesellschaft MIT Beschrankter Haftung

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

Osram Gmbh

Ledvance Gmbh

Osram Ag

Torsten Fries

Franz Kummer

Alfred Gahn

Tim Fiedler

Martin Zachau

Franz Zwaschka

Frank Jermann

Bert Braune

Andries Ellens

Armin Konrad

Günter Huber

G&uuml;nter Huber

Guenter Huber

Rainer Schirmer

A coated phosphor, formed by a powder of individual grains of a phosphor as base material, the grains being coated with a coating material. The layer comprises a plurality of individual layers and is particulate in form, the individual primary particles of the layer being at least 5 nm in size. The mean layer thickness is at least 20 nm.

Coated fluorescent substance, light emitting device comprising said substance and a method for producing said substance

An apparatus for producing oxidic nanocrystals from metal organic compounds or volatile inorganic compounds comprises an apparatus which includes a first vaporizer which is connected to a first carrier gas stream to produce a first reactant gas stream, a second vaporizer is connected to a second carrier gas stream to produce a second reactant gas stream the first and second reactant gas streams are connected to a first feed line and flow heated reactor wherein the reactants are heated and reacted to provide oxidic nanocrystals which are unagglomerated having a mean particle size of up to 20 nanometers.

Apparatus for producing oxidic nanocrystals

A phosphor with a garnet structure is distinguished by the addition of Si. It is suitable in particular for photon excitation by light sources with an emission between 250 and 550 nm.

Phosphor and light source comprising such a phosphor

The present invention relates to oxidic nanocrystals and a process and apparatus for producing oxidic nanocrystals from metalorganic compounds or volatile inorganic compounds. In particular, the process is suitable for oxidic or oxysulfidic nanocrystals, particularly based on the elements Y, Gd, Mg, Ca, Ba and Al. The nanocrystals preferably have a mean initial particle size of 1 to 20 nm.

Process and apparatus for producing oxidic nanocrystals

An illumination unit having at least one LED as light source, the LED emitting primary radiation in the range from 300 to 570 nm, this radiation being partially or completely converted into longer-wave radiation by phosphors which are exposed to the primary radiation of the LED, in which unit the conversion takes place at least with the aid of a nitride-containing phosphor which emits with a peak emission wavelength at 430 to 670 nm and which originates from the class of the Ce- or Eu-activated nitrides, oxynitrides or sialons.

Illumination unit having at least one LED as light source

Growing community of inventors

Stadtbergen, Germany

Torsten Fries