Patent ID: 9194558
Filing Date: 2015-11-24
Classification: F21K,F21V,F21Y

Abstract:
1. A lighting device comprising: a light source for providing light; a light scattering element arranged for receiving light from said light source; a socket for providing power to said light source; a heat sink onto which said light scattering element is mounted and separated from the light source by a support; a lamp bulb being engaged with said socket and encompassing said lighting device; said light scattering element comprising luminescent material adapted for converting part of said provided light into a different wavelength, wherein said light scattering element is arranged to transmit and scatter part of said provided light without conversion, wherein said light source is a laser arranged to provide high brightness coherent light, such that upon receiving said coherent light, light being outputted from said light scattering element comprises high brightness incoherent light originating from converted light providing a sparkle lighting effect, and coherent light providing a speckle lighting effect; wherein the degree of transmitted coherent light is controlled by arranging said light scattering element to have at least one of a predetermined degree of light scattering, a predetermined dopant concentration in said luminescent material, and a predetermined thickness of the light scattering device; wherein said light source and said light scattering element are separated a predetermined distance from each other.