| 摘要 |
PROBLEM TO BE SOLVED: To freely convert the wavelength of reflected light from a recorded hologram by applying and fixing a transparent liquid compsn. which converts wavelengths of reproduced light in a volume phase type hologram. SOLUTION: As for compds. having radical polymerizable unsatd. double bonds among photopolymerizable compds., for example, polyesteracrylates are used. As for cation polymerizable compds., it is preferable that the compds. have alicyclic epoxy groups, glycidyl groups or the like in one molecule, and for example, diglycerol polyglycidylether is used. The photoinitiator consists of a compd. which produces free radicals by irradiation of UV rays, and for example, benzophenone is used. The compsn. which converts wavelengths of reproduced light from a hologram prepared by mixing the components above described in a desired proportion is applied by spin coating or the like on the hologram recording layer of a hologram recording medium, left to stand for an enough time, and then wholly exposed to UV rays or visible rays to be fixed.
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