Illumination – Plural light sources – Particular wavelength
Reexamination Certificate
2009-12-02
2010-12-07
Bruce, David V (Department: 2875)
Illumination
Plural light sources
Particular wavelength
C362S230000
Reexamination Certificate
active
07845825
ABSTRACT:
For general lighting applications, a semiconductor chip produces near ultraviolet (UV) electromagnetic energy in a range of 380-420 nm, e.g. 405 nm. Semiconductor nanophosphors, typically doped semiconductor nanophosphors, are remotely positioned in an optic of a light fixture. Each phosphor is of a type or configuration that when excited by energy in the 380-420 nm range, emits light of a different spectral characteristic. The nanophosphors together produce light in the fixture output that is at least substantially white and has a color rendering index (CRI) of 75 or higher. In some examples, the fixture optic includes an optical integrating cavity. In the examples using doped semiconductor nanophosphors, the visible white light output exhibits a color temperature in one of the following ranges along the black body curve: 2,725±145° Kelvin; 3,045±175° Kelvin; 3,465±245° Kelvin; and 3,985±275° Kelvin.
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Rains, Jr. Jack C.
Ramer David P.
ABL IP Holding LLC
Bruce David V
McDermott Will & Emery LLP
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