Stereoscopic display method of hologram and its forming method and its stereoscopic display apparatus

A method of forming a hologram on a two-dimensional hologram forming surface divided into a plurality of minimum units, comprising:

• a) selecting a plurality of two-dimensional planes bisecting a three-dimensional object such that each two-dimensional plane is parallel to the hologram forming surface;
• b) determining the distance of each two-dimensional plane from the hologram forming surface;
• c) formulating projection images by imaging a corresponding bisecting portion of the three-dimensional object each of the two-dimensional planes as would be seen from the minimum units forming the hologram forming surface such that each minimum unit has corresponding projection images for each of the two-dimensional planes;
• and
• d) holographically recording the projection images onto the hologram forming surface, comprising the substeps of:
• i) arranging the hologram forming surface and a display means for displaying the projection images in parallel so that a distance between the hologram forming surface and the display means can be freely adjusted;
• ii) for each of the two-dimensional planes, setting the distance between the hologram forming surface and the display means to the distance from the two-dimensional plane to the hologram forming surface determined in step b);
• iii) for each minimum unit, displaying on the display means the projection images corresponding to the minimum unit such that each projection image is displayed while maintaining the distance at the distance set in step d)ii);
• and
• iv) projecting each projecting image onto the corresponding minimum unit to thereby expose the hologram forming surface.