Patent ID: 8163443

Claim:
A photosensitive resin composition for volume phase hologram recording comprising: a soluble aromatic copolymer (A) that has a structural unit of a divinyl aromatic compound and a structural unit of a monovinyl aromatic compound, comprises 10 to 90 mol % of a structural unit represented by the following formula (a1) where R 1 is an aromatic hydrocarbon group of 6 to 30 carbon atoms, and has a hydroxyl equivalent of 100 to 30,000 g/equiv, a number average molecular weight (M n ) of 400 to 30,000, and a molecular weight distribution (M w /M n ) of 10 or less; a photoradically polymerizable compound (B) capable of copolymerizing with the soluble aromatic copolymer (A); a photopolymerization initiator (C); and a polymer binder (D), wherein the soluble aromatic copolymer (A) accounts for 5 to 60 wt % of the composition.