| 摘要 |
PURPOSE:To reduce the recording of unnecessary interference fringes and to obtain a reproduced image with a good S/N by adhering a reflection preventive film on a transparent plate which supports a negative film in the exposing process of a hologram diffraction image. CONSTITUTION:A roll film is used as the negative film and a couple of transparent plates 11a and 11b are used to support the roll film. In this case, reflection preventive films 12 are adhered on both surfaces of the transparent plates 11a and 11b. Thus, the reflection preventive films 12 are adhered to eliminate reflection on the top and reverse surfaces of the transparent plate 11, thereby eliminating the adverse influence of unnecessary interference fringes upon a holographic stereogram on a hologram photosensitive plate 6.
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