(Meth)acrylate compound, optical composition, molded article, and optical element

An optical composition comprising a (meth)acrylate compound represented at least by general formula (1) and a polymerization initiator:

• wherein a and b are each an integer of 1 or 2;
• X and Y are each —S— or —O—;
• R1 and R2 are each an alkyl group having 1 or 2 carbon atoms or a hydrogen atom;
• and Z1 and Z2 are each represented by general formula (2):
• wherein m is selected from 0 and 1;
• W is a hydrogen atom or a methyl group;
• and V is selected from substituents represented by:
• *—O—CnH2n—O—**;
• *—S—CnH2n—S—**;
• and
• *—S—CnH2n—O—**,
• wherein * represents a bond with an alkyl group;
• ** represents a bond with a (meth)acryloyl group;
• n is selected from 2, 3 and 4;
• and at least one hydrogen atom of —CnH2n— is replaced by a methyl group.

A (meth)acrylate compound represented at least by general formula (1):

• wherein a and b are each an integer of 1 or 2;
• X and Y are each —S— or —O—;
• R1 and R2 are each an alkyl group having 1 or 2 carbon atoms or a hydrogen atom;
• and Z1 and Z2 are each represented by general formula (2):
• wherein m is selected from 0 and 1;
• W is a hydrogen atom or a methyl group;
• and V is selected from substituents represented by:
• *—O—CnH2n—O—**;
• *—S—CnH2n—S—**;
• and
• *—S—CnH2n—O—**,
• wherein * represents a bond with an alkyl group;
• ** represents a bond with a (meth)acryloyl group;
• n is selected from 2, 3 and 4;
• and at least one hydrogen atom of —CnH2n— is replaced by a methyl group.