申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0204304A2
公开(公告)日:1986-12-10
A near infrared ray absorption filter, particularly usable as a sharp cut filter for an infrared ray sensor, which comprises as an absorbent capable of controlling transmission of a ray at least one anthraquinone compound represented by the following formula,
wherein A1, A2, A3 and A4 are different from each other or the same, and stand for a phenyl or naphthyl group unsubstituted or substituted with at least one aklyl, alkoxy, phenoxy or hydroxy group, and the rings A and B are unsubstituted or substituted with at least one lower alkyl group or halogen atom.
一种近红外线吸收滤光片,特别是可用作红外线传感器的尖锐切割滤光片,它包括至少一种由下式表示的蒽醌化合物作为吸收剂,能够控制射线的透射、
其中 A1、A2、A3 和 A4 彼此不同或相同,代表未被取代或被至少一个烷基、烷氧基、苯氧基或羟基取代的苯基或萘基,环 A 和环 B 未被取代或被至少一个低级烷基或卤原子取代。