Patent ID: 7880944

Claim:
A computer-generated hologram for selectively reproducing a plurality of images depending on a direction of observation where complex amplitude of an object wave is recorded, wherein: a virtual point light source group is set up spatially on a side opposite to the observation side of the hologram, luminance angular distribution of divergent light diverged from each of a virtual point light source of said virtual point light source group toward the observation side is divided by angular division, and within a divided angle, among multiple images positioned on a plane of said virtual point light source group, a divergent light to be equal to divergent light diverged from a point with amplitude equal to a density of pixel of the image corresponding to each of divided angle at the position of a virtual point light source or equal to a value in a certain fixed relation with a density of the images is recorded as an object light at one of positions on the observation side of the virtual point light source group.