| abstract |
A photochromic lens is composed of a lens member made of a lens resin; and a photochromic layer applied on at least one side of the lens member and formed of a resin of a three-dimensional network structure. The layer-forming resin contains a spirooxazine compound represented by the following general formula (I): ##STR1## wherein R 1 means a hydrogen or halogen atom or a cyano, C 1-6 alkyl or C 1-6 alkoxy group, and R 2 denotes a C 1-6 alkyl group, --CH 2 ) n COOH, --CH 2 ) n CN, substituted arylalkyl group or --CH 2 ) n COOR in which R is a C 1-6 alkyl group and n stands for an integer of 1-4. The layer-forming resin may additionally contain a phenol resin and/or a phenolic compound. A hard coat layer may optionally be applied on the surface of the photochromic layer. |