Koninklijke Philips Corporation N.v.

Vosla Gmbh

Innovent E.v.

Martin Polster

Andreas Heft

Hans-Alo Dohmen

Juergen Flechsig

Markus Winkler

Andreas Pfuch

Ralph Kecke

Bernd Grünler

Arnd Schimanski

The present invention relates to a method for producing a halogen lamp, including the following steps: providing a glass tube blanket; dip-coating of the glass tube blanket using a sol gel process having an inorganic coating; forming a lamp bulb from the coated glass tube blanket. The present invention relates further to a halogen lamp produced accordingly.

Method of producing a halogen lamp and halogen lamp

The invention describes a lamp (A,B,C,D) comprising a glass envelope () enclosing a light generating means (), and an axially and/or circumferentially graded absorption coating (A,B,C,D) applied to a surface of the glass envelope (), wherein the graded absorption coating (A,B,C,D) exhibits a smooth transition in a transition region (A,C,D) from a first coated region (A,B,C,D) on the glass envelope () to a second coated region (A,B,C,D) on the glass envelope (). The invention further describes a lighting assembly () comprising a lamp according to any of claimstoand a reflector () for collecting and shaping any light passing through the graded absorption coating (A,B,C,D) of the lamp (A,B,C,D). The invention also describes a method of manufacturing a lamp (A,B,C,D) comprising a glass envelope () enclosing a light generating means (), which method comprises applying an axially and/or circumferentially graded absorption coating (A,B,C,D) to a surface of the glass envelope () such that the graded absorption coating (A,B,C,D) exhibits a smooth transition in a transition region (A,B,C,D) from a first coated region (A,B,C,D) to a second coated region (A,B,C,D).

Lamp with graded absorption coating

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Pausa, Germany

Martin Polster