| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to efficiently and cost effectively produce a front surface filter and to produce the filter having excellent near IR cut performance, electromagnetic wave shield performance, flaw prevention and antireflection by bonding a transparent laminated film formed by providing the surface of a transparent resin film with an electromagnetic wave shield layer, near IR shield layer and adhesive layer and a transparent resin substrate to each other and providing both surfaces thereof with antireflection layers. SOLUTION: This front surface filter is constituted by disposing the antireflection layers on both surfaces of the substrate obtd. by bonding the transparent laminated film formed by providing the surface of the transparent resin film with the electromagnetic wave shield layer, the near IR shield layer and the adhesive layer and the transparent resin substrate to each other. The process for production is executed firstly by depositing a conductive material by evaporation on the transparent resin film. The conductive material is deposited by evaporation for the purpose of shielding electromagnetic waves, for which a metal or metal oxide or the like is used. The near IR shield layer is obtd. by coating of a near IR absorbent coating liquid prepd. by dispersing or dissolving, for example, the near IR absorbent into an or. solvent and adding a binder resin thereto. |
