Patent ID: 6775059
Filing Date: 2004-08-10
Classification: C09B,G02B,Y10T

Abstract:
A near infrared absorption material comprising:a transparent substrate, and at least a transparent resin layer formed thereon, the transparent resin layer containing a near infrared absorption dye which is a dithiol-nickel complex represented by the following formula (1): and at least one diimonium compound represented by the following formula (2): where R1 to R8 are the same or different and are each a hydrogen atoms a C1-12, alkyl group or a C6-12 aryl group; and X is an anion selected from SbF6âˆ’, ClO4âˆ’, NO3âˆ’ and a halogen ion; a dye selectively absorbing a light of 550 to 620 nm wavelength region; and at least one polymethine dye represented by the following formula (4): where R13 and R14 are the same or different and are each a hydrogen atom, a C1-12 alkyl group, a C6-12 aryl group, an alkenyl group, an aralkyl group or an alkinyl group; Y is a sulfur atom, a methine group or a chlorocyclohexene group; and X is an anion selected from SbF6âˆ’, ClO4âˆ’, NO3âˆ’ and a halogen ion.