Gte Laboratories Incorporated

George R Gibbs

Walter Peter Lapatovich

Joseph M Proud

A compact fluorescent lamp has an outer envelope in which there is supported a capsule containing a mercury-free fill comprised of aluminum tribromide. The fill is energized to produce a plasma discharge which emits ultraviolet and visible radiation. Phosphor, in the form of a particulate layer or a gas, converts the ultraviolet into visible light. The lamp may contain electrodes or be electrodeless. In the electrodeless embodiment RF energy may be capacitively or inductively coupled to the fill.

Compact mercury-free fluorescent lamp

An ultraviolet light source includes a volume filled with a dose of AlBr.sub.3 and an inert gas. No mercury is used. During electrical discharge excited states of AlBr.sub.2, and AlBr emit light, with AlBr having a broad ultraviolet emission peaking at about 278 nm. The source may be energized with or without internal electrodes. Phosphors may be employed to convert the ultraviolet to visible light. The lamp's envelope may be aluminosilicate coated quartz.

Mercury-free discharge lamp

An ultraviolet light source includes a volume filled with a dose of AlCl.sub.3 and an inert gas. No mercury is used. During electrical discharge excited states of AlCl.sub.3, AlCl.sub.2, and AlCl emit light, with AlCl having a broad ultraviolet emission peaking at about 261.4 nm. The source may be energized with or without internal electrode. Phosphors may be employed to convert the ultraviolet to visible light. The lamp's envelope may be aluminosilicate coated quartz.

A compact fluorescent lamp has an outer envelope in which there is supported a capsule containing a mercury-free fill comprised of aluminum trichloride. The fill is energized to produce a plasma discharge which emits ultraviolet and visible radiation. Phosphor, in the form of a particulate layer or a gas, converts the ultraviolet into visible light. The lamp may contain electrodes or be electrodeless. In the electrodeless embodiment RF energy may be capacitively or inductively coupled to the fill.

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Marlboro, MA, United States of America

George R Gibbs