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Dainippon Ink and Chemicals, Incorporated

Yasunobu Hirota

Hiroyuki Tokuda

Hisatomo Yonehara

Yasuhiro Doi

Junichiro Koike

A radiation curable resin composition for a Fresnel lens is provided, which exhibits a high elastic modulus and a high refractive index and is superior in adhesion to the plastic substrate and is superior in transparency. A lens layer exhibits excellent shape retention over a wide temperature range and is less likely to chip and crack due to an external force. A Fresnel lens sheet using the radiation curable resin composition is also provided. The resin composition comprises, as an essential component, an epoxy (meth)acrylate (a) having an epoxy equivalent per weight of 450 g/eq or more, which has a cyclic structure and two or more (meth)acryloyl groups; a specific trifunctional (meth)acrylate (b); a (meth)acrylate (c) having a molecular weight of 700 or less from an aliphatic polyhydric alcohol having an oxypropylene structure; and a monofunctional (meth)acrylate (d) having a cyclic structure.

Radiation curable resin composition for fresnel lens and fresnel lens sheet

An object is to provide a color filter which is capable of forming a pattern using an alkaline developer and has excellent heat resistance, solvent resistance and chemical resistance, and is also suitable for practical use. The color filter comprises a transparent substrate and a pixel formed on the transparent substrate, wherein the pixel is made of a coating film of a curable colored composition containing (a) a coloring material, (b) a compound having a photopolymerizable functional group and (c) an amino resin having a carboxyl group and/or a phenolic hydroxyl group and the coating layer is photocured, followed by heat curing.

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Chiba, Japan

Yasunobu Hirota