Hologram recording material
AssigneeCanon Kabushiki Kaisha
InventorsMasakazu Matsumoto, Katsuhiko Nishide
Life of this patent
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Abstract
A hologram is produced by causing a crosslinking reaction in accordance with an interference pattern in a recording carrier composed of a polymer containing in its unit structure an aromatic or hetero cyclic ring having a reactive position capable of being substituted by radical.
Claims7
A relatively thin member of 2 to 20 microns thick for use as a volume type phase hologram for coherent optical processing adapted to provide enhanced diffraction efficiency, higher resolving power, and, stability against moisture and light consisting essentially of:
- a crosslinkable composition of:
- (a) a polymer containing in its unit structure an aromatic or heterocyclic ring having therein a reactive position capable of being substituted by a radical and;
- (b) 0.1 to 200 percent by weight based on the weight of the polymer of a halogen-containing compound for generating radicals when activated by radiation rays having at least one carbon to which two or more halogen atoms are attached, said radicals causing a cross-linking reaction involving said polymer to provide a cross-linked product in response to exposure to said radiation rays, said cross-linked product being responsive to the swelling effect of a first solvent and the shrinking effect of a second solvent, and said halogen containing compound being adapted to be dissolved by said first solvent.
A relatively thin member of 2 to 20 microns thick for use as a volume type phase hologram for coherent optical process adapted to provide enhanced diffraction efficiency, higher resolving power, and stability against moisture and light, consisting essentially of:
- a crosslinkable composition of;
- (a) a polymer containing in its unit structure an aromatic or heterocyclic ring having therein a reactive position capable of being substituted by a radical and;
- (b) 0.1 to 200 percent by weight based on the weight of the polymer of a halogen-containing compound for generating radicals when activated by radiation rays having at least one carbon to which two or more halogen atoms are attached, said radicals causing a cross-linked product in response to exposure to said radiation rays.
Dependencies are inferred from the claim text.