Patent ID: 9702513
Date: 2017-07-11
CPC Classifications: F21K,G03B,H05B,Y02B

Claim:
1. A lighting device comprising: a first pump laser matrix configured to emit blue laser light or ultraviolet laser radiation along a first path, the first pump laser matrix having a controllable pump radiation power distribution, the first pump laser matrix being comprised of a plurality of individual pump lasers or groups of pump lasers; a single dichroic mirror positioned to receive the blue laser light or ultraviolet laser radiation emitted by the first pump laser matrix on a rear side surface, the dichroic mirror being oriented at a 45° angle relative to the first path, the rear side surface having an interference coating that reflects the blue laser light or ultraviolet laser radiation emitted by the first pump laser matrix and transmits other colors of light and other radiation, the dichroic mirror having a front side surface having an interference coating that reflects blue laser light or ultraviolet laser radiation and transmits other colors of light and other radiation, the front side surface being opposite the rear side surface; a static phosphor arrangement comprising at least two different phosphors, the static phosphor arrangement being positioned to receive the blue laser light or ultraviolet laser radiation reflected by the rear side surface of the dichroic mirror, the at least two different phosphors of the static phosphor arrangement being capable of being irradiated simultaneously with the blue laser light or ultraviolet laser radiation reflected by the rear side surface of the dichroic mirror to be re-emitted at least partly, and in each case differently, wavelength-converted toward the rear side surface of the dichroic mirror; a second pump laser matrix configured to emit blue laser light or ultraviolet laser radiation along a second path toward the front side surface of the dichroic mirror, the second pump laser matrix having a controllable pump radiation power distribution, the dichroic mirror being oriented at a 45° angle relative to the second path; and a control device which provides for the first pump laser matrix a drive pattern for separately driving surface power density of the pump radiation of the individual pump lasers or groups of pump lasers of the first pump laser matrix, wherein the static phosphor arrangement comprises two different phosphors arranged in separate concentric areas.