Koninklijke Philips Corporation N.V.

Thomas Amrein

Joachim F Opitz

Stefan Gruhlke

Bertrand Gorisse

Kees Denissen

A colored luminaire, in particular a colored signaling light for automobiles, fitted with a lamp and a luminaire cover in which the lamp has a bulb with a coating of a first layer comprising a pigment, which pigment is chosen from the group of perylene pigments, perinone pigments, isoindoline pigments, and thioindigo pigments, is remarkable for a long useful life. It is not attacked by UV radiation, moisture, and spraying salt and is resistant to temperatures of between 250 and 350&deg; C. Colored luminaires with bulb coatings comprising these pigments alone or in combination with further pigments for color correction comply with the color standards for automobile luminaires.

Pigment coated lamp and luminaire emitting colored light

Colored luminaire, in particular a signal luminaire for motorcars, having a lamp and a cover, wherein the lamp includes a bulb having a coating composed of a first layer containing an iron-oxide pigment, a second layer containing an organic coloring material, and a transparent layer which is arranged between the first and the second layer and which contains a silicon-oxygen compound.

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Aachen, Germany

Thomas Amrein