Laser-based waveguide-coupled white light system for a lighting application

摘要

A laser-based fiber-coupled white light illumination system comprising: one or more white light source modules positioned at a source location, each comprising: a laser device comprising a gallium and nitrogen containing material and configured as an excitation source, the laser device comprising an output facet that is configured to be a Emit laser emission with a first wavelength in the range of 385 nm to 495 nm; a phosphor element configured as a wavelength converter and emitter and arranged so that the electromagnetic laser radiation can be optically coupled to a primary surface of the phosphor element; an angle of incidence that is between the electromagnetic laser radiation and the primary surface of the phosphor element is configured, wherein the phosphor element is configured so that it is at least a portion of the electromagnetic laser radiation with the first wavelength, the incident on the primary surface at a point of more than 5 µm is converted into a fluorescent emission with a second wavelength which is longer than the first wavelength; a light emission mode that characterizes the fluorescent element with a white light emission resulting from at least one interaction of the electromagnetic laser radiation is generated with the phosphor emission, wherein the white light emission consists of a mixture of wavelengths characterized by at least the second wavelength from the phosphor element; one or more fibers configured to have first ends that are associated with the one or the a plurality of white light source modules are coupled to output the white light emission at respective second ends; andone or more passive lighting elements, which are substantially free of electrical power supply, which are arranged at a lighting position and are coupled to the respective second ends in order to distribute the white light emission to one or more lighting patterns, the lighting position being from a position of the one or more the plurality of white light source modules is separated by a distant distance.