LUMINAIRE AND LIGHTING CONTROL SYSTEM
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United States of America Patent
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Issued Date -
Jan 23, 2025
app pub date -
Dec 1, 2022
filing date -
Dec 1, 2022
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Abstract
A device includes a LED die having a peak emission at a blue or shorter wavelength, a LED die having a peak emission at a red, orange, yellow, green, or cyan wavelength, and a homogenous light conversion material positioned to receive light emitted from the LED dies. The light conversion material including: (i) a first phosphor compound having a peak emission at a green wavelength; (ii) a second phosphor compound having a peak emission at an orange wavelength; and (iii) a third phosphor compound having a peak emission at a red, orange, yellow, green, or cyan wavelength. The device is a packaged LED device and a relative concentration of the phosphor compounds and a relative luminosity of the LED dies are selected so the device emits white light satisfying a preference P1 and a fidelity F3 according to a TM-30 standard for color rendering.
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