Patent ID: 6479193
Filing Date: 2002-11-12
Classification: C03C,G03H,G11B

Abstract:
A hologram-producing film which:(1) comprises: (i) a gel of a network structure of an inorganic substance selected from the group consisting of silicon dioxide, titanium oxide, zirconium oxide and aluminum oxide; (ii) a photopolymerizable compound (A) selected from the group consisting of photopolymerizable monomers and photopolymerizable oligomers; and (iii) a photoinitiator (B); said photopolymerizable compound (A) and said photoinitiator (B) being contained in said network structure of said gel, and a refractive index of a polymer from said photopolymerizable compound (A) being different from that of said inorganic substance, (2) said hologram-producing film which produces a hologram when exposed to interference fringes of a coherent laser light.