| 摘要 |
A resin composition suitable for various optical uses, which comprises a base resin and 0.1 to 60% based on the weight of said resin composition, of fine silica or glass particles, said fine silica or glass particles having an average particle diameter of 0.05 to 50 mu m and having their surface treated with at least one silane compound selected from those represented by the following general formulae (I) to (IV): RnSiCl(4-n)' (I) RnSi(OR1)(4-n)' (II) R3SiNHSiR3, and (III) <IMAGE> (IV) wherein n is an integer of from 1 to 3, R1 is an alkyl group having 1 to 3 carbon atoms, and R is a saturated or unsaturated hydrocarbon group having 1 to 22 carbon atoms or a halogen-substituted, saturated or unsaturated hydrocarbon group having 1 to 22 carbon atoms, wherien the silane does not couple the particle and the resin.
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