Full color holographic projector with single wavelength laser source, spatial light modulator, and rotating diffuser

A holographic projection system comprising:

• a light source configured to generate a first light beam;
• a spatial light modulator configured to receive the first light beam and project a second light beam;
• a diffuser configured to rotate and comprising a plurality of regions, wherein two or more of the plurality of regions comprise respective down conversion materials, and wherein each of the respective down conversion materials convert a color of the second light beam to another color;
• and
• at least one control module configured to generate an image, encode the spatial light modulator with a plurality of holograms to generate the second light beam including a plurality of instances of the image, control rotation of the diffuser to display and overlay the plurality of instances of the image to provide, as a resultant, the image, and rotate the diffuser at least three times a frame rate of the image such that the diffuser rotates once per refresh cycle of the image.

A holographic projection method comprising:

• generating a first light beam via a light source;
• receiving the first light beam at a spatial light modulator and projecting a second light beam via the spatial light modulator;
• rotating a diffuser, wherein the diffuser comprises a plurality of regions, wherein two or more of the plurality of regions comprise respective down conversion materials, and wherein each of the respective down conversion materials convert a color of the second light beam to another color;
• generating an image;
• encoding the spatial light modulator with a plurality of holograms for only one respective color of light to generate the second light beam including a plurality of instances of the image and address the light source with pulse widths respectively for different color light emissions associated with the plurality of regions of the diffuser, wherein the spatial light modulator is encoded with the plurality of holograms for only the one color of light concurrently with generation of the plurality of instances for the different color light emissions;
• and
• controlling rotation of the diffuser to display and overlay the plurality of instances of the image to provide, as a resultant, the image.