Patent ID: 9574728
Date: 2017-02-21
CPC Classifications: F21K,F21S,F21V,F21W,F21Y,G02B

Claim:
1. A lighting device, comprising: a laser diode source for emitting light that is placed at ground level of a venue; waveguiding material for carrying the light emitted from the laser diode source to phosphor material located at a remote distance from the laser diode source; and a structure, having an optically transparent window, for enclosing the phosphor material; wherein the structure completely encloses the phosphor material to protect it from harsh conditions; wherein the structure comprises a substrate upon which the phosphor material is deposited, and the substrate is made of a thermally conductive material to transport heat generated away from the phosphor material; wherein the light emitted from the laser diode source enters the structure to interact with the phosphor material and light emitted from the phosphor material exits the structure through the optically transparent window; and wherein the structure is placed at a point of illumination above the ground level of the venue with the light emitted from the phosphor material being directed towards an area to be lighted.