Laser-driven white lighting system for high-brightness applications

摘要

A high-power, high-brightness lighting system for large venue lighting, which includes a laser diode as the excitation source and one or more phosphor materials placed at a remote distance from the laser source. The invention offers a lighting system with the advantages of high brightness, high efficiency, high luminous efficacy, long lifetimes, quick turn-on times, suitable color properties, environmental sustainability, and easy maintenance, which may allow for smart and flexible control over large area lighting systems with resulting savings in operating and maintenance costs.

主权项

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.