Hologram recording medium
AssigneeSony Corporation
InventorsChiaki Kojima, Hidetoshi Shimizu
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Abstract
There is disclosed herein a hologram recording medium comprising of substrate formed of transparent and non-light scattering material having a plurality of open pores for said substrate and photopolymerization composition impregnated in said open pores. The photopolymerization composition consists essentially of a photopolymerizable monomer or oligomer which adheres to the surface of said open pores, a photopolymerization initiator and activator for controlling the photopolymerization speed.
Claims11
A hologram recording medium comprising a rigid substrate formed of transparent and non-light scattering material having a plurality of open pores in said substrate, photopolymerizable composition impregnated in said open pores, said photopolymerizable composition consisting essentially of:
- a photopolymerizable material selected from the group consisting of photopolymerizable monomers or photopolymerizable oligomers having an adhesive property to surface of said open pores;
- a photopolymerization initiator, and an inactivator for controlling photopolymerization speed, wherein said inactivator is a material having a triplet interaction with the photopolymerization initiator, where energy emitted by said photopolymerization initiator upon returning from an excited state by irradiation of light to a ground state is partially a triplet state, and said excited inactivator dissipates energy as heat upon returning to a ground state of said inactivator.
A hologram recording medium comprising a rigid substrate formed of transparent and non-light scattering material having a plurality of open pores in said substrate, photopolymerizable composition impregnated in said open pores, said photopolymerizable composition consisting essentially of:
- a photopolymerizable material selected from the group of consisting of photopolymerizable monomers or photopolymerizable oligomers having an adhesive property to surface of said open pores;
- a photopolymerization initiator, and an inactivator for controlling photopolymerization speed;
- and
- said inactivator is a material having a triplet interaction with the photopolymerizable initiator;
- wherein said inactivator is selected from the group consisting of 1-phenylnapthalene and olive oil.
Dependencies are inferred from the claim text.