Multicolor hologram recording structure

摘要

A multicolor hologram display structure which is capable of presenting an intermediate color with high reproducibility and which requires a relaxed accuracy for alignment between hologram original plates of different colors. The multicolor hologram display structure has at least two multi-recorded or superimposed volume holograms that diffract light of different wavelengths, e.g. red light and green light, respectively. The multicolor hologram display structure includes an intermediate color pattern region consisting essentially of dots (7) formed from two of the at least two multi-recorded or superimposed holograms and a background (8) of either of the two holograms that is recorded between the dots. A region of the volume holograms may be subjected to color tuning to reproduce a color different from the recorded color by means of a color tuning film which affects swelling of the volume hologram region.