Patent ID: 6866927

Claim:
A filter for an image display device comprising a resin layer having a thickness of about 1 mm or less containing therein (A) at least one compound selected from a compound of the following formula (1) wherein R 1 and R 2 each independently represent an aliphatic hydrocarbon group optionally having a substituent, R 3 and R 4 each independently represent a hydrogen atom or substituent, and L 1 and L 2 each independently represent an aromatic ring having a substituent; and the following formula (2): wherein R 5 and R 6 each independently represent an aliphatic hydrocarbon group optionally having a substituent, R 7 to R 9 each independently represent a hydrogen atom or substituent, Z 1 and Z 2 each independently represent a group for forming a 5-membered ring, L 3 and L 4 each independently represent an aromatic ring optionally having a substituent, and X − represents a counter anion; and (B) a compound having an absorption peak of light in the wavelength range from about 780 nm to about 1200 nm.