Koninklijke Philips Corporation N.V.

Wilfried Emunds

Manfred Westemeyer

Michael Haacke

Ralf Muckel

Markus Gerhard

Herbert Schartmann

Nicasius Gerardus Van Gennip

A high pressure gas discharge lamp has electrodes that project into a discharge space surrounded by a discharge wall. The discharge space has a filling of rare gas and metal halides. The metal halide composition comprises halides of sodium and scandium with a mass ratio of halides of Sodium and Scandium of 0.9-1.5. In order to provide a lamp that can be easily manufactured and is well suited for operation at reduced power, the discharge vessel wall is of externally and internally cylindrical shape. The lamp may be manufactured by providing a cylindrical tube of quartz material, heating the tube at two distant portions and forming grooves there, inserting two electrodes into the tube and heating and pinching the tube at both ends to seal the discharge space. Manufacture is carried out without a bulb forming step such that the discharge space remains in externally and internally cylindrical shape.

Discharge lamp with improved discharge vessel

A lamp () for an automotive headlamp and a method for manufacturing such kind of a lamp () is provided, wherein the lamp () comprises a burner () for emitting light, a metal holder () connected to the burner () for supporting the burner (), a first socket part () made from a heat-resistant plastic material, which is connected to the burner (), and a second socket part (), through which a part of the burner (), which is connected to a first electrical pole (), is led for connecting the burner () to a voltage source, wherein the second socket part () is arranged adjacent to the first socket part () such, that at least one insulating gap () for providing voltage resistance in mainly radial and/or axial direction is provided. Due to the first socket part () it is possible to receive the hot burner () by the socket without impairing the heat resistance, wherein the second socket part () may be made from a cheaper material. This leads to a reduction of production costs without impairing the heat resistance or the voltage resistance provided by the insulating gap () between the first socket part () and the second socket part ().

High-pressure discharge lamp and a method of manufacturing a high-pressure discharge lamp

The invention relates to a discharge lamp with a reflector () and a burner (), wherein the reflector () comprises at least a reflective contour () and a hollow reflector neck (), the burner () is arranged in centered manner in the reflector () and the reflector () and the lower part () of the burner () are connected firmly together by a mechanical fastening unit and, during assembly, the burner () may be guided through the reflector neck (), starting with its upper part (), and the mechanical fastening unit exhibits such play in the x, y and z directions that the burner () can be brought into a defined position relative to the reflector during assembly.

Discharge lamp with a reflector and a burner

The invention relates to a lamp ( ) with a reflector ( ) and a light source ( ). The reflector ( ) has a reflector neck ( ) which serves to accommodate the light source ( ) and into which the relevant light source ( ) is introduced and fixed, possibly after an alignment. Incandescent lamps and in particular gas discharge lamps may be used for the light source ( ). In known lamps, the light source ( ) used is fastened to the reflector neck ( ) by means of a cement. The light source ( ) is aligned in the reflector ( ), is to be kept in the desired position, and is fixed in place only after the long drying time has elapsed. To simplify the manufacture, according to the invention, a sleeve ( ) is provided for fastening to the reflector neck ( ) and for accommodating the light source ( ). A mechanical fastening of the light source ( ) to the reflector ( ) can be achieved in a surprisingly simple manner by means of an additional sleeve ( ).

Growing community of inventors

Alsdorf, Germany

Wilfried Emunds