Holographic projectors including size correction and alignment of beams having different wavelengths of light

A holographic projection system comprising:

• a first light source configured to generate a first light beam;
• a second light source configured to generate a second light beam;
• a third light source configured to generate a third light beam, wherein the first light beam, the second light beam and the third light beam have respective wavelengths;
• a plurality of spatial light modulators configured to encode phase holograms including respective versions of a graphic image based on light generated by the first light source, the second light source and the third light source to provide phase hologram beams, wherein a first one of the spatial light modulators comprises a first non-periodic photon sieve layer, and wherein the first non-periodic photon sieve layer is configured to adjust a divergence angle of one of the first light beam, the second light beam or the third light beam such that diffracted light out of each of the plurality of spatial light modulators is at a same diffraction angle;
• a combiner configured to combine the phase hologram beams to provide a combined phase hologram beam projected for viewing a combined graphic image;
• and
• a control module configured to encode a prism hologram on one of the plurality of spatial light modulators to align outputs of the plurality of spatial light modulators.

A holographic projection system comprising:

• a first light source configured to generate a first light beam;
• a second light source configured to generate a second light beam;
• a third light source configured to generate a third light beam, wherein the first light beam, the second light beam and the third light beam have respective wavelengths;
• a plurality of spatial light modulators configured to encode phase holograms including a graphic image generated based on a combination of light from the first light beam, the second light beam and the third light beam;
• a control module configured to
• encode one or more lens holograms on a first one or more of the plurality of spatial light modulators to adjust size of one of the first light beam, second light beam, or third light beam relative to another one of the first light beam, second light beam, or third light beam, and
• encode one or more prism holograms on a second one or more of the plurality of spatial light modulators to align the first light beam, the second light beam and the third light beam;
• and
• a first lens disposed to adjust a divergence angle of one of the first light beam, the second light beam or the third light beam, such that diffracted light out of each of the plurality of spatial light modulators is at a same diffraction angle, wherein the first lens adjusts the divergence angle of the one of the first light beam, the second light beam and the third light beam prior to being received at one of the plurality of spatial light modulators.