Ledvance Gmbh

Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh

Patent-treuhand-gesellschaft Fuer Elektrische Gluehlampen Mbh

Osram Ag

Osram Gesellschaft MIT Beschraenkter Haftung

Osram Gmbh

Renate Hirrle

Martin Zachau

Frank Jermann

Armin Konrad

Guenter Huber

Tim Fiedler

Dirk Berben

Ulrich Müller

Thomas Huckenbeck

Erich Arnold

Günter Huber

Robert Otto

Joerg Strauss

Regine Krämer

Markus Schönheits

Alexander Bothe

Frauke Philipp

Jürgen Heider

Hans-Dieter Witzke

Christina Wille

Jörg Strauss

A phosphor for low-pressure discharge lamps is disclosed, wherein the phosphor is present in the form of phosphor grains coated with a protective layer, wherein the protective layer consists of a metal oxide, a metal borate, a metal phosphate or mixtures thereof.

Illuminant and illuminant lamp comprising said illuminant

In different embodiments, a low-pressure discharge lamp () is provided. The low-pressure discharge lamp has a discharge vessel () and a coating structure (). The coating structure is formed on an inner face of the discharge vessel (). The coating structure () has first fluorescent particles () which have at least one fluorescent substance that emits red light and the average particle size of which ranges from 0.5 &#x3bc;m to 1.9 &#x3bc;m, second fluorescent particles () which have at least one fluorescent substance that emits green light and the average particle size of which ranges from 0.6 &#x3bc;m to 2.8 &#x3bc;m or from 1 &#x3bc;m to 4 &#x3bc;m, and third fluorescent particles () which have at least one fluorescent substance that emits blue light and the average particle size of which ranges from 1 &#x3bc;m to 4 &#x3bc;m.

Low-pressure discharge lamp with fluorescent particles having a small particle size

A luminophore consisting of the BAM system as a host lattice, having the stoichiometry MEuMgMnAlO, is provided, wherein 0.2&#x2266;x&#x2266;0.48; 0&#x2266;y&#x2266;0.3; 0&#x2266;d&#x2266;0.1; &#x2212;0.1&#x2266;f&#x2266;1.0.

Luminophore and lighting system having such a luminophore

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.

Conversion LED

The invention proposes a dielectric barrier discharge lamp having a phosphor mixture and improved color rendering. The phosphor mixture comprises at least the phosphor components A: cerium-activated yttrium aluminate (YAlO:Ce) and B: europium-activated barium magnesium aluminate (BaMgAlO:Eu). To further improve the color rendering and to match the emission spectrum to the spectral sensitivity of film, the phosphor mixture optionally also comprises the phosphor component C: cerium- and manganese-activated gadolinium magnesium zinc pentaborate (Gd(Zn,Mg)BO:(Ce, Mn)) and/or the phosphor component D: europium-activated strontium aluminate (SrAlO:Eu).

Dielectric barrier discharge lamp with improved color reproduction

A discharge vessel with an excimer fill comprises a cap, electrodes and a fill having at least one noble gas and a halogen, which, when the lamp is operating, together form an excimer, the discharge vessel being manufactured from quartz glass. The inner wall of the discharge vessel is completely covered with a passivation layer of a metal oxide of the metals Al, Hf, Y or Sc or the mixed oxides thereof, the layer having an amorphous structure and its layer thickness being 20 to 200 nm.

Discharge vessel with excimer fill, and associated discharge lamp

Growing community of inventors

Augsburg, Germany

Renate Hirrle