Modular LED light bulb
First Claim
1. An apparatus comprising:
- a heat sink;
an LED light source mounted on said heat sink;
a power adapter configured to be interchangeable with a conventional bulb power adapter; and
a controller that provides an average current to said LED light source when power is coupled to said apparatus via said power adapter, said average current causing said LED light source to generate light of a predetermined standard intensity that is substantially independent of variations in said LED light source;
wherein said controller comprises an integrated circuit mounted on said heat sink.
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Accused Products
Abstract
An LED-based lighting device and method for making the same are disclosed. The lighting device includes an LED light source mounted on a heat sink, a power adaptor, and a controller. The power adaptor is configured to be interchangeable with a conventional incandescent bulb power adapter. The controller provides an average current to the LED light source when power is coupled to the device via the power adaptor. The average current causes the LED light source to generate light of a predetermined standard intensity that is substantially independent of variations in the LED light source from device to device. In one aspect of the invention, the LED light source includes a plurality of LEDs connected in series, the LEDs are bonded to the heat sink and connected to one another in series by wire bonds and to conducting traces on the heat sink.
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Citations
18 Claims
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1. An apparatus comprising:
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a heat sink; an LED light source mounted on said heat sink; a power adapter configured to be interchangeable with a conventional bulb power adapter; and a controller that provides an average current to said LED light source when power is coupled to said apparatus via said power adapter, said average current causing said LED light source to generate light of a predetermined standard intensity that is substantially independent of variations in said LED light source; wherein said controller comprises an integrated circuit mounted on said heat sink. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for providing a base element for use in constructing LED-based lighting devices, said method comprising:
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providing a base element comprising a heat sink; an LED light source mounted on said heat sink; a power adapter configured to be interchangeable with a conventional incandescent bulb power adapter; and a base unit controller that provides an average current to said LED light source when power is coupled to said apparatus via said power adapter, said average current causing said LED light source to generate light; connecting said base unit to a factory controller that includes a photodetector that measures light from said base unit; causing said base unit controller to vary said average current through said LED light source while measuring an intensity of light generated by said LED light source utilizing said photodetector until a predetermined intensity of light is measured; and storing information specifying said average current that caused said LED light source to generate said predetermined intensity of light, wherein said base unit controller provides said average current to said LED light source when power is coupled to said power adapter; and wherein said base unit controller comprises an integrated circuit mounted on said heat sink. - View Dependent Claims (16)
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17. A lighting system comprising a base unit and a first detachable globe, said base unit comprising:
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a heat sink; an LED light source mounted on said heat sink, said LED light source generating light characterized by a first spectrum; a power adapter configured to be interchangeable with a conventional bulb power adapter; and a controller that provides an average current to said LED light source when power is coupled to said apparatus via said power adapter, said average current causing said LED light source to generate light of a predetermined standard intensity that is substantially independent of variations in said LED light source from one of said lighting systems to another of said lighting systems, wherein said first detachable globe comprises a transparent shell having a first phosphor composition on or contained in said shell and an adapter for attaching said first detachable globe to said base unit, said phosphor composition converting a portion of said light from said LED light source to light having a second spectrum that is different from said first spectrum. - View Dependent Claims (18)
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Specification