Patent ID: 8034514

Claim:
A photosensitive resin composition for volume phase hologram recording, comprising: a soluble aromatic copolymer (A) which: is soluble in toluene, xylene, tetrahydrofuran, dichloroethane or chloroform; has a structural unit of a divinyl aromatic compound and a structural unit of a monovinyl aromatic compound; and contains 10 mol % or more of a structural unit represented by the following general formula (a1): where R 1 represents an aromatic hydrocarbon group having 6 to 30 carbon atoms; a photoradical polymerizable compound (B) which is copolymerizable with the soluble aromatic copolymer (A); a photopolymerization initiator (C); and a polymer binder (D) or a polymer binder (D) and a plasticizer (E), wherein the soluble aromatic copolymer (A) is incorporated in an amount of 5 to 60% by weight; and the soluble aromatic copolymer (A) has a number average molecular weight of 400 to 10,000.