LED LUMINAIRE INCLUDING A THIN PHOSPHOR LAYER APPLIED TO A REMOTE REFLECTOR
First Claim
1. A luminaire comprising:
- an LED light source;
a reflector disposed to reflect light from the LED light source and direct light out of the luminaire to provide illumination; and
a thin layer of phosphor applied to the reflector to provide wavelength conversion for at least a portion of the light from the light source so that the luminaire emits substantially white light.
3 Assignments
0 Petitions
Accused Products
Abstract
A luminaire including a thin phosphor layer applied to a remote reflector is disclosed. In some embodiments of the luminaire, LEDs illuminate and activate a thin remote phosphor coating applied to a reflective substrate. In some embodiments, the LED light source includes at least one LED with a GaN emitting layer. The LEDs can be packaged with or without a local phosphor. The thin remote phosphor can include red, red/orange, yellow, green or cyan emitting phosphor so that the luminaire produces white light. The thin remote phosphor layer can include two or more different color emitting phosphors. In some embodiments, the luminaire is a light fixture including a diffuser lens assembly and a pan to support the fixture when mounted in a ceiling.
55 Citations
37 Claims
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1. A luminaire comprising:
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an LED light source; a reflector disposed to reflect light from the LED light source and direct light out of the luminaire to provide illumination; and a thin layer of phosphor applied to the reflector to provide wavelength conversion for at least a portion of the light from the light source so that the luminaire emits substantially white light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A light fixture comprising:
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a plurality of GaN LED devices; a reflector disposed to reflect light from the LED light source and direct light out of the light fixture; a phosphor applied to the reflector to provide wavelength conversion for at least a portion of the light from the plurality of GaN LED devices so that the light fixture emits substantially white light; and a diffuser lens assembly through which light exits the light fixture. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of assembling a light fixture, the method comprising:
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providing a housing including a reflector; coating the reflector with a phosphor to a thickness of from 5 to 50 μ
m;installing a GaN LED light source on a heatsink so that light from the GaN LED light source impinges on the reflector with the phosphor; and positioning a diffuser lens assembly adjacent to the heatsink so that light from the GaN LED light source is reflected from the reflector with the phosphor and leaves the light fixture through the diffuser lens assembly. - View Dependent Claims (27, 28, 29, 30, 31)
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32. A lighting system comprising:
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an LED light source; and a remote phosphor; wherein the LED light source and the remote phosphor are selected and positioned so that indirect light is provided as substantially white light. - View Dependent Claims (33, 34, 35, 36, 37)
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Specification