Patent ID: 7663315
Filing Date: 2010-02-16
Classification: F21V,F21Y,G02B,H01L,H05B

Abstract:
1. A bulb adapted to fit over and around a light-emitting diode emitting a light of a first hue in a generally Lambertian radiation pattern, said bulb having a generally spherical shape and a substantially circular external cross-sectional geometry, said bulb defining an inner cavity with a substantially circular cross-sectional geometry for housing the light-emitting diode, and said bulb being composed of a substantially homogenous mixture of a light-transmitting material and a light color-converting material, said light color-converting material converting the light of the first hue into a light of a desired hue, which is then viewed along an external surface of said bulb, and wherein the light of the first hue emitted along a vertical axis of the bulb passes through a greatest amount of the light color-converting material of the substantially homogenous mixture, while the light of the first hue emitted at the bottom edge of the bulb passes through a minimal amount of the light color-converting material of the substantially homogenous mixture.