Electrodeless hid lamp and electrodeless hid lamp system using t

Details Electrodeless hid lamp and electrodeless hid lamp system using t Electrodeless hid lamp and electrodeless hid lamp system using t

1996-08-22

1999-01-26

Noori, Max H.

Electric lamp and discharge devices

With gas or vapor

With particular gas or vapor

313637, 313571, H01J 1720

Patent

active

058642102

ABSTRACT:
The apparatus has a light transmitting bulb for confining a discharge therein, a fill sealed within the light transmitting bulb and including a rare gas and a metal halide emitting a continuous spectrum by molecular radiation, and a discharge excitation source for applying electrical energy to the fill and for starting and sustaining an arc discharge, and the metal halide includes one kind of halide selected from the group consisting of an indium halide, a gallium halide, and a thallium halide, or a mixture thereof, and in that the light transmitting bulb has no electrodes exposed in discharge space and further this construction utilizes the continuous spectrum of molecular radiation of the metal halide and thereby achieves high color rendering properties and high luminous efficacy simultaneously without using mercury as the fill.

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patent: 5661365 (1997-08-01), Turner
T. Higashi, "Radiation Characteristics of Metal Halide Lamps with Rare Earth Halide Additives", Journal of the Illumination Engineering Institute of Japan, vol. 65, No. 10, pp. 487-492 (1981).
D.C. Fromm, et al., "A Metal Halide High Pressure Discharge Lamp with Warm White Colour and High Efficacy", Lighting Research and Technology, vol. 11, No. 1, pp. 1-8 (1979).

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