HALOGEN INCANDESCENT LAMP COMPRISING AN INFRARED REFLECTIVE COATING
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United States of America Patent
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Issued Date -
Dec 16, 2010
app pub date -
Dec 18, 2008
filing date -
Dec 18, 2007
priority date (Note) -
Abandoned
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Abstract
A halogen incandescent lamp is provided with a rotationally symmetrical bulb, which has a longitudinal axis and in which at least part of a surface of the bulb is provided with a coating which reflects infrared radiation, a coiled light-emitting element being arranged axially in the bulb, the bulb being provided with an infrared reflective coating layer, wherein the length L and the diameter D of the coiled light-emitting element are at a ratio of at least 6:1 with respect to one another, and wherein the bulb is in the form of an ellipsoid, the ends of the light-emitting element lying substantially at the two foci of the ellipse spanning the ellipsoid in the form of a solid of revolution, with an eccentricity in the range of from 0.5 to 0.7.
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