Heraeus Noblelight Gmbh

Karsten Ernesti

Rolf Malkmus

Beate Herter

Anke Schnabl

Torsten Jenek

Alex Voronov

Dieter Steck

A gas-discharge lamp (deuterium lamp) is provided having a lamp bulb () filled with gas, an anode () disposed inside the lamp bulb, a cathode () spaced from the anode inside the lamp bulb, a housing having a molded body (), a rear housing wall (), and a housing base made at least partially of electrically nonconductive material. The housing base includes a housing front (), an intermediate housing wall (), a cathode space (), and a cathode shielding window (). The cathode shielding window is insulated from the molded body and/or is made of an insulating material. The gas-discharge lamp is particularly applicable for analytical purposes.

Cathode shielding for deuterium lamps

For insertion into a lamp housing, a radiator module ( ) is provided inside of the module with at least one discharge lamp as radiation source, which puts out an ultraviolet radiation produced by plasma within a discharge chamber ( ), the plasma being formed by coupling an electromagnetic field into the discharge chamber ( ) and the radiation produced by the plasma exits along a given optical axis through at least one body ( ) transparent to ultraviolet radiation as a window. In the range of the plasma at least one diaphragm opaque to radiation is provided with a through-bore along the axis ( ), an additional thermal radiation source is fixedly arranged in a given position within the module along the optical axis ( ); the additionally produced radiation penetrates through a second transparent body ( ) as entry window into the discharge chamber, and then exits along the axis through the first transparent body ( ) together with the ultraviolet radiation produced by the plasma. The module ( ) can be inserted into a mounting of the lamp housing with a coupling lens ( ), and is locked and held in a given position within the mounting by the mating fit of the module with respect to the coupling lens.

Radiator module for use in a lamp housing

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Hanau, Germany

Karsten Ernesti