H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 65/04 (2006.01) H01J 61/12 (2006.01)
Patent
CA 2111426
ABSTRACT An improved bulb for an electrodeless lamp has a transparent envelope with a continuous wall and contains a chemical fill comprising an inert starting gas, mercury, alkali metal iodides, and a sufficient amount of scandium iodide and at least one iodide of a rare earth to increase the concentration of the rare earth in the vapor during lamp operation so as to enhance the color rendering index, Ra, of the lamp to a value greater than about 80 and result in a color temperature between about 3000 to about 5000 degrees Kelvin.
Feuersanger Alfred E.
Keeffe William M.
Shea Michael J.
Struck Charles William
Gte Products Corporation
R. William Wray & Associates
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