APPARATUS FOR GENERATING FLUORESCENCE
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United States of America Patent
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Issued Date -
Jun 13, 2013
app pub date -
Dec 9, 2011
filing date -
Dec 9, 2011
priority date (Note) -
Abandoned
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Abstract
An apparatus for generating fluorescence comprises a blue LED emitting a light beam, a filter and a fluorescent material. The filter is arranged in front of the light beam emitted by the blue LED, receives the light beam, and converts the light beam into a filtered light beam having wavelengths of 465-505 nm. The fluorescent material is arranged in one side of the filter, which is opposite to the blue LED, to receive the filtered light beam. The fluorescent material is excited by the filtered light beam to emit fluorescence. The filter is applied to control the wavelength and spectral range of the filtered light beam to achieve the best fluorescence exciting efficiency and prevent from the overlap of the wavelength ranges of the filtered light beam and the fluorescence.
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