Patent ID: 8889803

Claim:
A sealant in an optical device comprising an epoxy polymerizable composition comprising: (A2) fluorene epoxy compound having the following general formula (1) or (2); (A3) epoxy compound having a softening point of 30° C. or less; and (B1) thiol compound containing a compound represented by formula (4), wherein a mole ratio of thiol groups to epoxy groups contained in the epoxy polymerizable composition is in a range of 0.9-1.1:1, where R 1 's independently represent hydrogen atom or methyl group; R 2 's independently represent hydrogen atom or methyl group; R 3 's independently represent alkyl group having 1-5 carbon atoms; R 4 's independently represent alkyl group having 1-5 carbon atoms; n's independently represent an integer of 0-3 ; m's independently represent an integer of 1-3; p's independently represent an integer of 0-4; and q's independently represent an integer of 0-4, where Y represents single bond, oxygen atom or sulfur atom; and R 1 -R 4 , m, n, p and q are defined the same as those of general formula (1),