Illumination System and Method

An illumination system arranged to output a light beam for illuminating a scene, comprising:

• a spatial light modulator arranged to receive incident light, and to output light comprising a first component and a second component, wherein the first component comprises incident light that is output without modulation by the spatial light modulator, and the second component comprises incident light that is spatially-modulated according to a hologram and output by the spatial light modulator;
• and
• a control device operable to control the proportion of light output by the spatial light modulator that corresponds to the second component.

A method for providing light illumination comprising:

• providing incident light to a spatial light modulator of an illumination system, wherein the spatial light modulator is arranged to output light comprising a first component and a second component, wherein the first component corresponds to incident light that is output without modulation by the spatial light modulator and the second component corresponds to incident light that is spatially-modulated according to a hologram and output by the spatial light modulator, and
• outputting light, by the spatial light modulator, for providing the illumination, the method further comprising:
• controlling the illumination system so that a proportion of the light output by the spatial light modulator corresponds to the second component.