Patent-treuhand-gesellschaft Fuer Elektrische Gluehlampen Mbh

Osram Ag

Osram Gmbh

Wolfgang Gruber

Martin Zachau

Armin Konrad

Matthias Schiplage

Claudia Castiglioni

The invention relates to a fluorescent coating for Hg low-pressure discharge lamps, comprising a fluorescent composition from at least one green fluorescent material emitting in the green spectral range, especially a Tb-and/or Eu-doped green fluorescent material, and a red fluorescent material emitting in the red spectral range, especially a Eu and/or Mn red fluorescent material. The invention is characterized in that a further fluorescent material is present which is adapted to absorb UV Hg and Hg-Vis radiation.

Fluorescent coating for high output lamps with color temperatures of less than 2700 kelvin

The phosphor composition for low-pressure gas discharge lamps with a high light efficiency for generating radiation with a color temperature of greater than 5000 K and a very good general color rendering index Ra of greater than 90 includes at least one halophosphate phosphor, a phosphor which emits in the red wavelength region and a phosphor which emits in the blue-green wavelength region. In addition, according to the invention the phosphor composition contains an Eu-doped barium magnesium aluminate phosphor BaMgAl O :Eu and a Tb-doped green-emitting phosphor.

Phosphor composition for low-pressure gas discharge lamps

Growing community of inventors

Augsburg, Germany

Wolfgang Gruber