Patent ID: 8662672

Claim:
A lighting device, comprising: at least one laser source for generating laser radiation; a plurality of optical elements; and an optical switch configured to switch the laser radiation between at least two of the plurality of optical elements, wherein each of the optical elements includes: a solid exterior surface defining an internal volume of the optical element, a light emission window disposed on the exterior surface, at least one luminescent material for emitting luminescent radiation upon excitation by the laser radiation, and a reflective coating disposed on at least a portion of one surface of the optical element for directing the emitted luminescent radiation from the luminescent material through the light emission window, wherein at least one of the laser radiation and the emitted luminescent radiation traverses at least a portion of the internal volume, wherein at least two optical elements of the plurality of said optical elements comprise different luminescent materials for the emission of luminescent radiation of different wavelengths, wherein the optical element has a cylindrical shape, wherein the at least one luminescent material is provided on a curved portion of the surface of the optical element having the cylindrical shape and wherein the emission window is defined by an essentially flat surface portion of the optical element having the cylindrical shape.