Led lighting using spectral notching
AssigneeCree, Inc.
InventorsPraneet Athalye, Gerald H. Negley, Antony Paul van de Ven
Life of this patent
Estimating the term…
Loading patent…
AssigneeCree, Inc.
InventorsPraneet Athalye, Gerald H. Negley, Antony Paul van de Ven
Estimating the term…
LED lighting using optical elements with spectral notching is disclosed. Embodiments of the invention provide an optical element and LED devices and systems using such an optical element, where spectral notch filtering introduced by the optical element improves the color rendering index (CRI) of emitted light. In some embodiments of the invention, the optical element is made to act as a notch filter by including a rare earth compound such as neodymium oxide in or on the material of which the optical element is made. A color pigment can also be used to impart notch-filtering properties to an optical element. An optical interference film can also be used. The optical element may be included in an LED device such as a multichip component or may be used as an enclosure or reflector for an LED lighting system such as a lamp or fixture.
An optical element shaped to receive at least some light from at least one LED, wherein the optical element filters the light to exhibit a spectral notch after being affected by the optical element.
An LED device comprising:
An LED lighting system comprising:
A method of assembling an LED device, the method comprising:
A method of making an LED lighting system, the method comprising:
An LED system comprising:
A method of improving the color rendering index (CRI) of an LED system, the method comprising:
Dependencies are inferred from the claim text.