| abstract |
The invention provides optical parts having good impactnresistance, good adhesiveness between the substrate and anthin film layer formed thereon, good scratch resistance andngood antireflection capabilities. A coating compositionncomprising at least one selected from dithian ringnskeleton-having sulfur compounds of a general formula (1):n n wherein n is an integer of from 1 to 3, nand benzene ring-having sulfur compounds of a generalnformula (2):n n wherein m is 0 or 1, nand a polyfunctional thiol is applied onto the surface of anplastic substrate to form thereon a thin film layer. |