Patent ID: 7244548
Filing Date: 2007-07-17
Classification: G03F,G03H,G11B

Abstract:
1. A photopolymerizing composition comprising: 1.0-99.0% by weight of at least one kind of polymerizable compound; 0.05-0.5% by weight of at least one kind of photosensitizer selected from among photochromic compounds that change color by incoherent UV light irradiation; 0.2-6.0% by weight of a coinitiator that is activated by visible light in the presence of a photoinduced form of the photochromic compound transformed by the incoherent UV light to photopolymerize the polymerizable compound; 0-97.5% by weight of a polymer binding agent; 0-6.0% by weight of a plasticizer; and 0-3.0% by weight of a non-polymerizing solvent, wherein the photochromic compounds are selected from a group consisting of dihetarylethenes, fylgimides, and a mixture thereof.