Three-dimensional image display apparatus

A three-dimensional image display apparatus for presenting a three-dimensional image to an observer in a viewing area on a predetermined virtual plane based on three-dimensional data, comprising:

• a screen having a stacking structure of first and second light transmission diffusion members;
• a light ray generator arranged to irradiate the viewing area with a light ray group made of a plurality of light rays through the screen;
• and
• a controller that controls the light ray generator such that the three-dimensional image is presented by the light ray group generated by the light ray generator based on the three-dimensional data, wherein
• a first direction parallel to the virtual plane is defined on a surface of the screen, and a second direction orthogonal to the first direction is defined on the surface of the screen,
• the first light transmission diffusion member is configured to diffuse and transmit each light ray from the light ray generator at a first angle in a first plane parallel to the first direction, and diffuse and transmit the light ray at a second angle larger than the first angle in a second plane parallel to the second direction,
• the second light transmission diffusion member is configured to diffuse and transmit each light ray from the light ray generator at an adjustment angle larger than the first angle in the first plane,
• the first and second light transmission diffusion members are stacked on each other such that a diffusion angle of each light ray by the screen in the first plane is adjusted to a target angle larger than the adjustment angle, and
• the target angle is a diffusion angle of each light ray with the viewing area in a case where a missing portion is not generated in the three-dimensional image in the first direction.