Patent ID: 7910222

Claim:
A polymerizable composition for forming an optical device, which comprises a polymerizable monomer of the following formula (1), a polymerizable monomer of the following formula (2), and a chain transfer agent comprising a fluorine-substituted thiol compound of the following formula (5): wherein R 1 and R 2 each independently represents H or D; R 3 represents H, D, CH 3 , CD 3 or a halogen atom; R 4 represents an alkyl group having from 2 to 8 carbon atoms and at least partly substituted with a fluorine atom, wherein R 1 and R 2 each independently represents H or D; R 3 represents H, D, CH 3 , CD 3 or a halogen atom; X 1 to X 5 each independently represents H, D, a halogen atom or CF 3 , and at least one of X 1 to X 5 is a halogen atom or CF 3 , wherein R represents an alkyl group at least partly substituted with a fluorine atom, or an aryl group at least partly substituted with a fluorine atom or a group CF 3 ; and n indicates an integer of from 1 to 12.