METHOD OF PHOTOGRAPHING HOLOGRAM AND HOLOGRAM PHOTOGRAPHING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a method and a device for stably photographing a large quantity of same holograms in a hologram photosensitive material by multi-surface printing without increasing the size of an overall optical system.

SOLUTION: In this method of photographing holograms, a plurality of holograms arranged parallel to each other in at least one direction are photographed in the hologram photosensitive material 20 by multi-surface printing. A prism 10 of polygonal prismatic columnar shape is moved relative to fixedly arranged object light 21 and reference light 22 by stepping operation in the direction parallel to each side surface thereof. At least one of the object light 21 and the reference light 22 is directed from the corresponding side surfaces 12, 13 of the prism 10 at each stepping position. The object light 21 and the reference light 22 are alternately directed into the hologram photosensitive material 20 stuck on the other side surface 11 of the prism 10 to be stacked on each other for recording by interference.

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