Near infrared absorbing composition

摘要

A near infrared absorbing composition is disclosed, containing at least one compound represented by general formula (I), having its absorption maxima at wavelengths of 720 nm or more: <IMAGE> (I) wherein R1 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group; R2 and R5, which may be the same or different, each represents a hydrogen atom or a group capable of substituting a hydrogen atom; R3 and R4, which may be the same or different, each represents a hydrogen atom, a halogen atom, a substituted or unsubstituted alkoxy group or a substituted or unsubstituted alkyl group with the proviso that they do not simultaneously represent hydrogen atoms; and R6 and R7, which may be the same or different, each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, an acyl group or a sulfonyl group, or R6 and R7 may be taken together to form a 5- or 6-membered ring.