Curable compositions containing the vinyl group-containing compound

PROBLEM TO BE SOLVED : To provide a curable composition excellent in storage stability even containing a compound containing a vinyl group as a form such as a vinyloxy group, and providing a cured film excellent in pencil hardness, transparency, refraction index and heat resistance by curing, the cured article and a manufacturing method of the cured film using the curable composition.SOLUTION : The curable composition contains a vinyl group-containing compound represented by the formula (1) and an aliphatic ether group-containing compound having an aliphatic ether group having 2 to 6 carbon atoms. In the formula (1), a Wand Ware groups of the formula (2), hydroxyl groups or (meth)acryloyloxy groups, ring Yand Yare aromatic hydrocarbon rings, R is a single bond or a specific bivalent group, Rand Rare cyano groups, halogen atoms or monovalent hydrocarbon groups, and n1 and n2 are integer of 0 to 4. In the formula (2), a ring Z is an aromatic hydrocarbon ring, X is a single bond or a group represented by -S-, Ris a single bond or an alkylene group having 1 to 4 carbon atoms, Ris a specific substituent such as a monovalent hydrocarbon group and m is an integer of 0 or more.