Lighting device and lighting method
DCFirst Claim
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1. A lighting device comprising:
- a first string of solid state light emitters in series, the first string comprising at least two solid state light emitters,a second string of solid state light emitters in series, the second string comprising at least two solid state light emitters,a third string of solid state light emitters in series, the third string comprising at least two solid state light emitters,the lighting device, when supplied with electricity of a first wattage, emitting output light with a wall plug efficiency of at least 60 lumens per watt of the electricity.
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Abstract
There is provided a lighting device which emits light with an efficacy of at least 60 lumens per watt. The lighting device comprises at least one solid state light emitter, e.g., one or more light emitting diodes, and optionally further includes one or more lumiphor. In some embodiments, the output light is of a brightness of at least 300 lumens. In some embodiments, the output light has a CRI Ra of at least 90. Also, a method of lighting, comprising supplying electricity to a lighting device which emits light with an efficacy of at least 60 lumens per watt.
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Citations
25 Claims
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1. A lighting device comprising:
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a first string of solid state light emitters in series, the first string comprising at least two solid state light emitters, a second string of solid state light emitters in series, the second string comprising at least two solid state light emitters, a third string of solid state light emitters in series, the third string comprising at least two solid state light emitters, the lighting device, when supplied with electricity of a first wattage, emitting output light with a wall plug efficiency of at least 60 lumens per watt of the electricity. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A lighting device comprising:
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at least a first solid state light emitter, and at least a first heat transfer region, the first solid state light emitter on the first heat transfer region, the lighting device, when supplied with electricity of a first wattage, emitting output light with a wall plug efficiency of at least 60 lumens per watt of the electricity. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A lighting device, comprising:
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at least a first solid state light emitter; at least a first heat spreading element; and at least a first conductive trace, the lighting device, when supplied with electricity of a first wattage, emitting output light with a wall plug efficiency of at least 60 lumens per watt of the electricity. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification