Methods and apparatus for multi-segment illumination of spatial light modulators

An illumination device comprising:

• a first illumination source region positioned along a first edge of a multi-region illumination source, the first illumination source region comprising first illumination source segments adapted to be driven according to a selected mode of operation;
• a second illumination source region positioned along a second edge of the multi-region illumination source, the second edge opposite the first edge, the second illumination source region comprising second illumination source segments adapted to be driven according to the selected mode of operation;
• a third illumination source region positioned along a portion of a third edge of the multi-region illumination source, the third illumination source region comprising third illumination source segments adapted to be driven according to the selected mode of operation;
• and
• a fourth illumination source region positioned along a portion of a fourth edge of the multi-region illumination source, the fourth edge opposite the third edge, the fourth illumination source region comprising fourth illumination source segments adapted to be driven according to the selected mode of operation,
• wherein the first illumination source region borders each of the third and fourth illumination regions, the second illumination source region borders each of the third and fourth illumination regions, the third illumination source region borders each of the first, second and fourth illumination regions, and the fourth illumination source region borders each of the first, second and third illumination source regions.