Patent ID: 7600882

Claim:
An LED-based light bulb, comprising: a thermal conductive light bulb housing body; a first group of semiconductor light emitters mounted radially around an interior annular sidewall of said thermal conductive light bulb housing body; a second group of semiconductor light emitters mounted radially around said interior annular sidewall of said thermal conductive light bulb housing body; a first luminescent material disposed on top of said first group of semiconductor light emitters; said first group of semiconductor light emitters and said second group of semiconductor light emitters emitting at least four different hues of light; a light mixing cavity inside an upper portion of said thermal conductive light bulb housing body, said light mixing cavity having a plurality of reflective surfaces and a diffusive light output window; a reflective member positioned within said light mixing cavity and positioned under said first group of semiconductor light emitters and said second group of semiconductor light emitters; an electrical AC-to-DC converting device disposed external to said light mixing cavity inside a bottom portion of said thermal conductive light bulb housing body, said electrical AC-to-DC converting device being in electrical communication with each light emitter of said first group of semiconductor light emitters and said second group of semiconductor light emitters; and at least one power connection having a form to engage mechanically and electrically with one of a conventional Edison-mount screw-type light bulb socket, a conventional fluorescent tube coupler arrangement, and a conventional halogen MR-16 socket arrangement, said power connection being in electrical communication to said electrical AC-to-DC converting device.