US Patent No. 10,546,843

WHITE LIGHT EMITTING DEVICES HAVING HIGH LUMINOUS EFFICIENCY AND IMPROVED COLOR RENDERING THAT INCLUDE PASS-THROUGH VIOLET EMISSIONS


Patent No. 10,546,843
Issue Date January 28, 2020
Title White Light Emitting Devices Having High Luminous Efficiency And Improved Color Rendering That Include Pass-through Violet Emissions
Inventorship Nishant Tiwari, Apex, NC (US)
Al Safarikas, Cary, NC (US)
David Power, Morrisville, NC (US)
Assignee Ideal Industries Lighting LLC, Durham, NC (US)

Claim of US Patent No. 10,546,843

1. A lighting apparatus, comprising:a first group of at least one first solid state emitter, each first solid state emitter comprising a first light emitting diode (“LED”) that, when excited, emits light having a peak wavelength in a range between about 440 nm and about 475 nm; and
a second group of at least one second solid state emitter, each second solid state emitter comprising a second LED that, when excited, emits light having a peak wavelength in a range between about 390 nm and about 415 nm,
wherein between about 2% and about 15% of a spectral power of light emitted from the lighting apparatus is light having wavelengths in the range between about 390 nm and about 415 nm.