Patent ID: 8253316
Filing Date: 2012-08-28
Classification: F21K,F21V,F21Y

Abstract:
1. A dimmable lamp comprising: an array of adjacent light-emitting elements, a reflector surrounding said array and widening away from the array to an exit aperture, a dielectric total internally reflecting concentrator with a convex entrance aperture coincident with said exit aperture of said reflector, said concentrator having an exit aperture narrower than said convex entrance aperture situated at an opposite end of said concentrator from said convex entrance aperture, said exit aperture of said concentrator in optical communication with a ball having a phosphor coating that converts part of the light from said light emitting elements to a different wavelength, and transmits part of the light from said light emitting elements, the luminosity of said array of light-emitting elements controlled by a quantum dimmer, wherein the heat from said array and the phosphor is cooled by a helical fin thermal management system, wherein said ball is a hollow dielectric sphere, said exit aperture of said concentrator comprising a dielectric cone with its base coincident with the narrow end of the sidewalls of said concentrator, said dielectric cone surrounded by said hollow dielectric sphere, the tip of said cone near the center of said dielectric sphere.