Method for providing a hologram and a method for forming such a display

摘要

Three-dimensional information is divided into a plurality of object structures and for each a 2-dimensional plane is set. A set of 2-dimensional images are obtained for each object structure by projecting the object structure onto the corresponding plane, as seen from a plurality of points on a hologram forming surface. In order to electronically produce a hologram, a phase distribution at the hologram forming surface is calculated from the 2-dimensional images of each object structure. The calculated phase distribution is reproduced on a liquid crystal display or the like. A reference light is irradiated onto the phase distribution and is converted into an optical wave front, thereby to display a solid image. In order to form a hologram on a hologram recording medium, each of the 2-dimensional images are exposed on a dry plate at a location corresponding to the location on said hologram forming surface from which the image was viewed.