Fay Sharpe LLP
LED illumination device with layered phosphor pattern
A method of applying at least two phosphors to an LED, wherein a first phosphor material having a lower absorption, shorter luminescence decay time, and/or lower thermal quenching than a second phosphor material is positioned closer to the LED than the second phosphor. Such an arrangement provides a light emitting device with improved lumen output and color stability over a range of drive currents.
Lumination LLC
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Joseph John Stanton Earl Alok Mani Anant Achyut Charles Adrian Holly Ann
Shiang Weaver Srivastava Setlur Becker Comanzo