| 摘要 |
PURPOSE:To obtain the titled filter having a good absorbing power in a near infrared wavelength by providing an org. layer contg. at least one of compds. shown by formula I. CONSTITUTION:The near infrared absorbing org. layer which is a constituting element, is prepared by coating a solution of the prescribed compd. on a substrate such as a glass, and a transparent substrate of a film or a plate followed by drying. If a thermoplastic resin is used as the substrate, the titled filter having a desired shape is easily prepared by an injection molding, a press molding, a blow molding and other various molding process.
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