Method for preparing a hologram

Details Method for preparing a hologram Method for preparing a hologram

1975-10-28

1977-08-02

Stern, Ronald J.

G03H 130

Patent

active

040392457

ABSTRACT:
A hologram is produced by arranging a plurality of two-dimensional pictures in a predetermined pattern, illuminating each of the two-dimensional pictures with a coherent beam, projecting light emerging from each of the two-dimensional pictures to a screen, a dispersing light on the screen in one direction parallel to the screen and redirecting the light along predetermined courses in the direction parallel to the screen but orthogonal to the one direction so as to form overlapping images of the two-dimensional pictures on the screen. The light from each picture is then redirected onto different positions of a holographic recording medium, and a reference beam is directed toward the medium so as to produce interference with the light from the screen. In one embodiment the screen reflectively disperses the light in the vertical direction and redirects it retroreflectively in the horizontal direction.

REFERENCES:
patent: 3608993 (1971-09-01), DeBitteto

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