Curable resin composition, optical material, and method for controlling optical material

A lens produced by curing a curable resin composition comprising an organic resin component and a metalloxane component, wherein the organic resin component includes a resin component having an Abbe number of 45 or more, and the metalloxane component has a metalloxane bond,

• wherein the organic resin component includes an organic resin component having a molecular weight of less than 700, and wherein the organic resin component having a molecular weight of less than 700 is a cationic curable component,
• and wherein the organic resin component having a molecular weight of less than 700 includes at least one compound of hydrogenated epoxy compounds and alicyclic epoxy compounds,
• and wherein the metalloxane component includes an organosiloxane compound represented by the following average compositional formula:
• R1aR2bYeSiOd
• it the formula, R1 represents an unsubstituted saturated aliphatic hydrocarbon group;
• R2 represents at least one member selected from the group consisting of unsubstituted aryl groups and unsubstituted aralkyl groups;
• Y represents at least one member selected from the group consisting of RO groups, hydroxyl groups, halogen atoms, and a hydrogen atom;
• R represents at least one member selected from the group consisting of unsubstituted alkyl groups, unsubstituted cycloalkyl groups, unsubstituted aryl groups, and unsubstituted aralkyl groups;
• and
• a, b, c, and d satisfy 0≦a<3, 0≦b<3, 0≦c<3, 0<a+b+c<3, 0<a+b<3, and a+b+c+2d=4,
• and wherein the metalloxane component comprises an organosiloxane compound having a ladder structure;
• and wherein the resin composition contains a thermal-latent cationic curing catalyst in an amount of 0.01 to 10% by weigh on the solid content equivalent basis relative to 100% by weight of the resin composition;
• and wherein the resin composition contains at least one compound selected from the group consisting of aliphatic alcohols, carboxylic acids, carboxylic acid esters, and carboxylic acid salts, each containing 8 to 20 carbon atoms, as a demolding agent,
• and the content of the demolding agent is 0.1 to 5% by weight relative to 100% by weight of the resin composition.