Lighting device including phosphor cover and method of manufacturing the same
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United States of America Patent
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Mar 20, 2018
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N/A
app pub date -
Oct 10, 2014
filing date -
Oct 11, 2013
priority date (Note) -
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Abstract
In a first aspect of the present inventive subject matter, a lighting device includes a light source including a light-emitting surface, and a phosphor cover including a spiral surface that covers the light-emitting surface of the light source. In a second aspect of the present inventive subject matter, a phosphor cover including a spiral surface may include one or more layers. In a third aspect of the present inventive subject matter, a method manufacturing a lighting device includes: rolling up a phosphor film from one end to another end to form a roll with spiral surfaces both ends of the roll of the phosphor film.
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