| 摘要 |
<p>A near-infrared absorbing filter, characterized in that it contains at least one compound represented by the following formula (1): (1), wherein R1 to R8 may be the same or different and at least one of them is a branched alkyl group, a ring A and a ring B may have a substituent, and X represents an anion necessary for neutralizing the electric charge. The near-infrared absorbing filter is excellent in thermal resistance.</p> |
