Headlight system incorporating adaptive beam function

摘要

A light source system comprising projection optics, which are capable of producing a far-field image of a light source. The light source comprises a fluorescent medium that when illuminated by light from laser emitters of a first waveband emits light of a second or more wavebands of longer wavelength. The resulting light emission produces a colour perceived as white. The light source is illuminated by a plurality of laser emitters arranged to illuminate the light source in an array-like manner. Control of the output of one or more of the laser emitters results in a variation of the spatial emission distribution from the light source and hence a variation of the far-field beam spot distribution. Further, fine variation of the far-field beam spot distribution may be achieved by re-direction of the laser beams by separate control methods.

主权项

1. A light source system operable in at least first and second modes to provide at least first and second different far field illumination patterns, the system comprising:
a photoluminescent material; a light beam generator for generating, in the first and second modes respectively, first and second independently controllable sets of one or more light beams for illuminating respective regions of the photoluminescent material, wherein the light beam generator comprises at least one semiconductor light emitting device spatially separated from the photoluminescent material; one or more transmission components comprising at least one optical fibre, the one or more transmission components for transmitting light beams towards optical control elements, each optical control element for directing one or more respective light beams towards the photoluminescent material; and a control means for controlling, in the first mode, movement of the optical control elements and/or the one or more transmission components for controlling the incidence of the light beams on respective optical control elements so as to control the position, size, shape and/or orientation of at least one region of the photoluminescent material illuminated by a respective light beam of the first set of one or more light beams.