Koninklijke Philips Corporation N.V.

Theodorus Gerardus Marinus Maria Kappen

Sigrid Maria Roman Gelderland

Hendrik Anton Van Esveld

Vincent Fischer

Johannes Jacobus Franciscus Geijtenbeek

Gerardus Marinus Josephus Franciscus Luijks

Antonius Arnoldus Duisters

Joseph Leonardus Gregorius Suijker

Vital Louis Elisabeth Bruyndoncx

A metal halide lamp includes a ceramic discharge vessel and two electrodes. The discharge vessel encloses a discharge volume containing an ionizable gas filling including at least a metal halide, two current lead-through conductors connected to the respective electrodes, and a seal of a sealing material through which at least one of the respective current lead-through conductors issues to the exterior of the discharge vessel. The sealing material of the seal includes a ceramic sealing material including cerium oxide, aluminum oxide and silicon dioxide as a mixture of oxides and/or one or more mixed oxides.

Metal halide lamp including ceramic sealing material

A metal halide lamp includes a ceramic discharge vessel and two electrodes. The discharge vessel encloses a discharge volume containing an ionizable gas filling including at least a metal halide, two current lead-through conductors connected to the respective electrode, and a seal having sealing material through which at least one of the respective current lead-through conductors issues to the exterior of the discharge vessel. The sealing material of the seal includes a ceramic sealing material with cerium oxide, aluminum oxide and silicon dioxide as a mixture of oxides and/or one or more mixed oxides.

Metal halide lamp with cerium oxide seal

A metal halide lamp includes a discharge vessel surrounded by an outer envelope with clearance and has a ceramic wall which encloses a discharge space filled with a filling comprising an inert gas, such as xenon (Xe), and an ionizable salt. In the discharge space, two electrodes are arranged whose tips have a mutual interspacing so as to define a discharge path between them. The ionizable salt comprises NaI, TlI, CaIand X-iodide wherein X is selected from the group comprising rare earth metals.

Metal halide lamp

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Eindhoven, Netherlands

Theodorus Gerardus Marinus Maria Kappen