| 摘要 |
Disclosed is a near infrared ray-absorbable dye composition which can absorb near infrared ray with efficiency, has a high visible light transmittance, has excellent light resistance, heat resistance and wet heat resistance, is hardly deteriorated in durability even when compounded so as to have absorption in a wide range of 800 to 1100 nm, and requires a low cost for the synthesis and isolation procedures in the production thereof. Also disclosed is a near infrared ray-absorbable filter comprising the compousition. The near infrared ray-absorbable dye composition comprising a compound represented by the general formula (1), (2) or (3). (1) (2) (3) wherein R1 to R4 independently represent an organic group which has a carbon atom at the binding position and may have a substituent or a hydrogen atom; R5 to R8 independently represent an aliphatic hydrocarbon group or an aryl group, each of which may have a substituent; R1, R2 and the like may together form a ring; R9 and R10 in the formula (3) represent the same groups corresponding to R1 and R2 or R3 and R4 in the formula (1), respectively; and R11 and R12 in the formula (3) represent the same groups corresponding to R5 and R6 or R7 and R8 in the formula (2), respectively. |
