Patent Number: 6,309,564

Title: Optical filter comprising transparent support and filter layer containing dye and binder polymer

Abstract: An optical filter comprises a transparent and a filter layer. The filter layer contains a dye and a binder polymer. The dye is a cyanine dye represented by the formula (I). The filter layer further contains a specific metal complex. ##STR1## in which each of Z.sup.1 and Z.sup.2 independently is an non-metallic atomic group forming a five-membered or six-membered nitrogen-containing heterocyclic ring; each of R.sup.1 and R.sup.2 independently is an alkyl group, an alkenyl group, an aralkyl group or an aryl group; L.sup.1 is a methine chain consisting of an odd number of methines; X is an anion; and each of a, b and c independently is 0 or 1.

Inventors: Harada; Toru (Minami-ashigara, JP), Yamada; Tsukasa (Minami-ashigara, JP)

Assignee: Fuji Photo Film Co., Ltd.

International Classification: B32B 27/20 (20060101); G02B 5/20 (20060101); F21V 009/04 (); H01J 031/00 (); G02B 005/22 (); G02B 005/28 (); B32B 007/02 ()

Expiration Date: 10/30/2018