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US 2009/0213584 A1Published application
T8 fluorescent lamp
AssigneeGeneral Electric Company
InventorJon B. Jansma
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AssigneeGeneral Electric Company
InventorJon B. Jansma
Estimating the term…
A T8 fluorescent lamp can comprise a light-transmissive glass envelope, means for providing an electrical discharge to the glass envelope, a phosphor layer within the glass envelope and a discharge-sustaining fill gas inside the glass envelope. The phosphor layer can comprise phosphors of a type for producing a daylight lighting spectrum or of a type for producing a tungsten/halogen lighting spectrum. The fill gas can comprise a mixture of argon and neon. In a particular mode of operation, the T8 lamp can operate at a power of at least 45 watts. In another mode of operation, the T8 fluorescent lamp can operate at a power of approximately 70 watts. A lighting fixture can comprise an array of such T8 fluorescent lamps arranged substantially side-to-side on longitudinal centerlines that are less than one and one-half inches apart. In a particular instance, the fixture can have been retrofitted from having been outfitted to accommodate T12 lamps.
A T8 fluorescent lamp including a light-transmissive glass envelope having an inner surface, means for providing an electrical discharge to the interior of the glass envelope, a phosphor layer within the interior of the glass envelope, the phosphor layer comprising one or more phosphors selected from the group consisting of phosphors for producing a daylight lighting spectrum and phosphors for producing a tungsten/halogen lighting spectrum, and a discharge-sustaining fill gas comprising a mixture of argon and neon sealed inside the light-transmissive glass envelope.
The T8 fluorescent lamp of claim 9 wherein the barrier layer comprises a blend of gamma alumina and alpha alumina.
A lighting fixture comprising an array of linear T8 fluorescent lamps arranged substantially side-to-side on longitudinal centerlines that are less than one and one-half inches apart, each T8 fluorescent lamp including a light-transmissive glass envelope having an inner surface, means for providing an electrical discharge to the interior of the glass envelope, a phosphor layer within the interior of the glass envelope, the phosphor layer comprising one or more phosphors selected from the group consisting of phosphors for producing a daylight lighting spectrum and phosphors for producing a tungsten/halogen lighting spectrum, and a discharge-sustaining fill gas comprising a mixture of argon and neon sealed inside the light-transmissive glass envelope.
A process for lighting an area comprising:
Dependencies are inferred from the claim text.