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AssigneeCree, Inc.
InventorsLong Larry Le, Paul Pickard, James Michael Lay, Tao Tong, Ronan Letoquin, Bernd Keller, Eric Tarsa, Mark Youmans, Theodore Lowes, Nicholas W. Medendorp, JR., Antony Van De Ven, Gerald Negley
Estimating the term…
Solid state lamps and bulbs comprising different combinations and arrangements of a light source, one or more wavelength conversion materials, regions or layers which are positioned separately or remotely with respect to the light source, and a separate diffuser. These are arranged on a heat sink in a manner that allows for the fabrication of lamps and bulbs that are efficient, reliable and cost effective and can provide an essentially omni-directional emission pattern, even with a light source comprised of a co-planar arrangement of LEDs. Additionally, this arrangement allows aesthetic masking or concealment of the appearance of the conversion regions or layers when the lamp is not illuminated. Various embodiments of the invention may be used to address many of the difficulties associated with utilizing efficient solid state light sources such as LEDs in the fabrication of lamps or bulbs suitable for direct replacement of traditional incandescent bulbs. Embodiments of the invention can be arranged to fit recognized standard size profiles such as those ascribed to commonly used lamps such as incandescent light bulbs, while still providing emission patterns that comply with ENERGY STAR® standards.
A lighting device, comprising:
A lighting device, comprising:
A solid state lamp, comprising:
A solid state lamp, comprising solid state light source emitting light with an efficacy of 80 lumens per watt or more, and having a color rendering index of greater than 80.
A solid state lamp, comprising solid state light source emitting light with an efficacy of 80 lumens per watt or more, and fitting within an A19 size envelope.
A solid state lamp, comprising solid state light source emitting light with an efficacy of 80 lumens per watt or more, and having an emission pattern compliant with ENERGY STAR® performance requirements.
A solid state lamp, comprising solid state light source emitting light with an efficacy of 80 lumens per watt or more from 10 watts or less.
A solid state lamp, comprising solid state light source emitting light with an efficacy of 80 lumens per watt or more, and having a double dome diffuser and conversion material arrangement.
A solid state lamp, comprising solid state light source emitting light with an efficacy of 80 lumens per watt or more, and having a color temperature of 3000 Kelvin or less.
A solid state lamp, comprising solid state light source emitting light with an efficacy of 80 lumens per watt or more, and having a lifetime of greater than 25,000 hours or more.
A solid state lamp, comprising solid state light source emitting light with an efficacy of 80 lumens per watt or more, and having a lifetime of 50,000 hours or more.
Dependencies are inferred from the claim text.