Method for making edge faded holograms

Details Method for making edge faded holograms Method for making edge faded holograms

1989-08-31

1991-01-29

Arnold, Bruce Y.

350 377, 350 383, 350320, G03H 104, G03H 128, G03H 106

Patent

active

049881515

ABSTRACT:
A method of making edge-faded holograms. A holographic recording medium is masked to provide a medium having photo-sensitive and photo-desensitized pixel areas. The photosensitive areas of the masked recording medium are exposed with a holographic image, producing an edge-faded hologram. Both positive and negative image masks may be employed to implement the invention. In a specific embodiment of the invention, the number and/or density of the photo-desensitized pixel areas are arranged in a pattern with the number of desensitized pixel areas increasing with proximity to the edge of the medium. The method may be performed in a single frame procedure or may be performed as a continuous process utilizing a continuous strip of holographic recording medium.

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