Hologram information forming method

Details Hologram information forming method Hologram information forming method

1993-10-12

1995-03-21

Lerner, Martin

Optical: systems and elements

Holographic system or element

For synthetically generating a hologram

359 21, 359 22, 359 23, 359 25, G03H 108, G03H 126

Patent

active

054001552

ABSTRACT:
A hologram surface to express a phase distribution, a visual field in which a solid image can be seen; and a stereoscopic display limit are set in a virtual space. A target to be stereoscopically displayed is subsequently expressed in the virtual space by a set of micro polygons. A plurality of slice planes which are parallel with the horizontal plane are set into the virtual space including the target. The line segments which intersect the polygons are obtained for every slice plane. The detected line segment is divided or clipped as necessary and is finally divided into the portion which can be always seen from the whole region of the visual field and a portion which is obstructed by another line segment and can be seen from only a part of the visual field, thereby extracting the line segment. In the calculation of a phase distribution, sampling points are set onto the extracted line segment, a 1-dimensional hologram phase distribution on the hologram surface is calculated for every sampling point, and the calculated 1-dimensional hologram phase distributions are added to every slice plane.

REFERENCES:
patent: 4669812 (1987-06-01), Hoebine
patent: 4778262 (1988-10-01), Haines
patent: 5138471 (1992-08-01), McGrew
patent: 5237433 (1993-08-01), Haines et al.

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