General Electric Company

József Gábeli

Bernard Patrick Bewlay

Bruce Alan Knudsen

Mohamed Rahmane

James Scott Vartuli

James Anthony Brewer

Agoston Boroczki

István Maros

Istvan Csanyi

Robert Baranyi

István Csányi

Tamás Panyik

Disclosed herein are mercury free ceramic metal halide high intensity discharge lamps of specified arc tube geometry and composition of ionizable fill. Embodiments herein generally employ a discharge vessel formed of a ceramic material having an aspect ratio satisfied by 1&#x3c;ITL/ID&#x3c;4.5 where ITL is the inner total length of the discharge vessel and ID is the inner diameter of the discharge vessel. The ionizable fill typically comprises xenon at a cold fill pressure of from about 3 to about 15 bar, and a halide component comprising sodium halide, thallium halide and/or indium halide, and at least one rare earth halide. Disclosed advantages may include betterment in both lumen run-up and color shift upon dimming, as compared to mercury-containing CMH HID lamps.

Mercury-free ceramic metal halide lamp with improved lumen run-up

A lamp having a ceramic arc envelope, an end structure coupled to the ceramic arc envelope and extending across an opening in the ceramic arc envelope, where the end structure comprises a passageway communicative with an interior chamber of the ceramic arc envelope is provided. The lamp further includes a molybdenum-rhenium electrode lead extending through and sealed with the passageway. The molybdenum-rhenium electrode lead includes a molybdenum-rhenium alloy. Furthermore, the lamp includes an arc electrode tip coupled to the electrode lead inside the interior chamber.

Ceramic lamps and methods of making same

Growing community of inventors

Szodliget, Hungary

József Gábeli