Patent ID: 9234637
Filing Date: 2016-01-12
CPC Classification: F21K,F21V,F21Y

Claim Text:
1. A light bulb comprising: a LED to emit light at a wavelength; a first phosphor to radiate light with a first spectral characteristic out of the light bulb in response to irradiation by the light at the wavelength; a second phosphor to radiate light with a second spectral characteristic out of the light bulb in response to irradiation by the light at the wavelength; a first light shutter, controlled by a first electromagnetic field, fixedly interposed between the LED and the first phosphor; a second light shutter, controlled by a second electromagnetic field, fixedly interposed between the LED and the second phosphor; electronic circuitry to generate the first electromagnetic field and the second electromagnetic field; an enclosure at least partially surrounding the LED and the electronic circuitry; and a connector attached to the enclosure and electrically coupled to a power input of the electronic circuitry; wherein the electronic circuitry is configured to receive an operating mode selection; and in response to receiving a first selection as the operating mode selection, control the first electromagnetic field to set a state of the first light shutter to optically couple the LED to the first phosphor, and control the second electromagnetic field to set a state of the second light shutter to optically decouple the LED from the second phosphor; and in response to receiving a second selection as the operating mode selection, control the second electromagnetic field to set the state of the second light shutter to optically couple the LED to the second phosphor.