Patent ID: 8300329

Claim:
An optical element assembly comprising a base member and a plurality of lens members, wherein at least the base member of the optical element assembly is composed of an acryl resin having an alicyclic structure which is a polymer of a monomer represented by the following formula (1), H 2 C═CR 1 COO—R 2 -A-R 3 —OCOCR 4 ═CH 2 (1) wherein R 1 and R 4 independently represent a hydrogen atom, a halogen atom, a hydroxyl group or an alkyl group having a carbon atom number of from 1 to 10; R 2 and R 3 represent a linkage group; and “A” is a group represented by the following formula (2) or (3), wherein p is an integer of 1 or 2; q is an integer of 0 or 1; and R 5 and R 6 independently represent a hydrogen atom, a halogen atom, a hydroxyl group or an alkyl group having a carbon atom number of from 1 to 10.