Patent ID: 8223412

Claim:
A computer-generated hologram, which has a complex amplitude of object light recorded therein, and is capable of selectively reconstructing a plurality of images depending on a viewing direction, characterized in that a virtual point light source group is spatially provided on a side of the hologram facing away from a viewing side of the hologram and a multiplicity of parallel slice planes traversing a plane of the virtual point light source group and a plane of the hologram are provided; light having a plurality of different wavelengths varying periodically in a direction orthogonal to the slice planes is assigned to the multiplicity of slice planes; in each slice plane, light diverging from virtual point light sources in the virtual point light source group is allowed to have one of the plurality of wavelengths; an angle profile of luminance of the divergent light that diverges from each of the virtual point light sources is divided into angles; in each angle, there is the divergent light that diverges in the slice planes from a point having a density of a wavelength corresponding to pixels of separate images positioned at the plane of the virtual point light source group at a corresponding virtual point light source position or an amplitude equal to a value having a constant relation to said density, so that said divergent light is recorded as object light at any position of a side of the virtual point light source group on which the divergent light is incident.