CURABLE ORGANOPOLYSILOXANE COMPOSITION, AND OPTICAL MEMBER FORMED FROM CURED PRODUCT OF SAME

[Problem] To provide a new light diffusing material, etc. with excellent light transmittance, light diffusion properties, and mechanical properties.[Resolution Means] The material of the present invention consists of a curable organopolysiloxane composition, containing the following components A to C: A) an organopolysiloxane having, in the molecule, at least two radical reactive groups and/or a reactive group capable of crosslinking via a hydrosilylation reaction, wherein at least 10 mol% of the overall organic groups bonded to silicon atoms in the molecule are aryl groups; B) one or more inorganic fillers; and C) an organosilicon compound different from component A, the organosilicon compound comprising the following C1 and C2: C1) an organosilicon compound different from component A, the organosilicon compound having: a reactive functional group capable of bonding to a reactive group contained in component A; and a hydrolyzable silyl group and/or a silicon atom-bonded hydroxyl group, in addition to having two or more silicon atoms in the molecule; and C2) an organosilicon compound different from component A, the organosilicon compound having: a reactive functional group having three or more carbon atoms capable of bonding to a reactive group contained in component A; and a hydrolyzable silyl group and/or a silicon atom-bonded hydroxyl group, in addition to having one or more silicon atoms in the molecule, wherein the mass of component B is 30 to 95% relative to the mass of the overall composition, and wherein the material has excellent properties such as photocurability, light diffusion, etc.