Holographic display apparatus

A holographic display apparatus comprising:

• a light source configured to emit light, the light source comprising a plurality of vertical-cavity surface-emitting lasers (VCSELs) that are spaced apart from one another;
• a spatial light modulator configured to, based on a hologram data signal, modulate the light emitted by the light source;
• and
• a focusing optical system configured to focus an image formed by the spatial light modulator using a Maxwellian view method,
• wherein the plurality of VCSELs comprises:
• a plurality of first VCSELs arranged entirely within a first region and configured to emit light having a first wavelength;
• a plurality of second VCSELs arranged entirely within a second region and configured to emit light having a second wavelength that is different from the first wavelength;
• and
• a plurality of third VCSELs arranged entirely within a third region and configured to emit light having a third wavelength that is different from the first wavelength and the second wavelength,
• wherein the first region overlaps the second region without overlapping the third region.