In a hologram screen for reproducing an image based on an output light obtained
by scattering and diffusing an image light from an image projector, when a white
light (image light) is projected on the hologram screen; and when a distance between
two points at optional two points A and B on a surface of the hologram screen is
given by 20 cm or less, and a value of the CIE 1976 chromaticity coordinate (u,
v) at the point A is given by (uA, vA)
and the value of the CIE 1976 chromaticity coordinate (u, v) at
the point B is given by (uB, vB); the output
light perpendicularly from the surface of the hologram screen has a color distribution
in which a color difference uvbetween two points A and B
is derived from the following formula (1) and given by 0.06 or less, where, the
formula (1) is expressed by,
Further, the output light, which is output to a viewpoint defined by the
following formula (2) from the surface of the hologram screen, has the color distribution
in which a color difference uv between two points A and
B is derived from the above formula (1) and given by 0.01 or less, where, the formula
(2) is expressed by,
in the formula (2), L is a distance between the viewpoint and a center of the
hologram screen, and H is a length of the hologram screen in the direction of the height.
