| abstract |
(57) [Summary] [Purpose] Made of synthetic resin that can efficiently cut light in the near infrared region, is lightweight, has good moisture resistance, and is easy to process such as molding, cutting, and polishing. To provide near infrared cut filter. [Structure] A mixed monomer composed of a phosphoric acid group-containing monomer, a fluorine atom-containing monomer and a copolymerizable monomer copolymerizable with these monomers represented by the following chemical formula 1 is copolymerized. It is characterized by containing the copolymer component thus obtained and an ionic metal component mainly composed of copper ions, which is bonded to the phosphate group of the copolymer component. [Chemical 1] |