Light source with tunable CRI

A light-emitting device with at least two light-emitting dies encapsulated with two different types of the wavelength-converting materials is disclosed. Each of the wavelength-converting materials is configured to produce a visible light from a narrow band light near UV region produced by the light-...

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Bibliographic Details
Main Authors Chan, Bit Tie, Ng, Keat Chaun, Tan, Kheng Leng
Format Patent
LanguageEnglish
Published 31.12.2019
Subjects
AGRICULTURE
ANIMAL HUSBANDRY
BASIC ELECTRIC ELEMENTS
BLASTING
CARE OF BIRDS, FISHES, INSECTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
FISHING
FORESTRY
FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF
HEATING
HUMAN NECESSITIES
HUNTING
LIGHTING
MECHANICAL ENGINEERING
NEW BREEDS OF ANIMALS
REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR
SEMICONDUCTOR DEVICES
STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR
TRAPPING
WEAPONS
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Summary:A light-emitting device with at least two light-emitting dies encapsulated with two different types of the wavelength-converting materials is disclosed. Each of the wavelength-converting materials is configured to produce a visible light from a narrow band light near UV region produced by the light-emitting dies, but with different correlated color temperatures (CCT) and different spectral contents. The combination of the two visible light forms the desired visible white light. The Color rendering index of the light-emitting device is tunable by adjusting the supply current to the light-emitting dies. In another embodiment, a light module with tunable CRI for an illumination system is disclosed.
Bibliography:Application Number: US20100977512