An optical resin composition comprising: a resin having a structural unit represented by Formula below; and a binaphthalene compound having a structure represented by Formula below and/or an oligomer thereof: (in Formula, A represents a C1-C5 alkylene group, p represents 0 or 1, K 1 represents a hydrogen atom or a C1-C5 alkyl group, K 2 represents a hydrogen atom, a C1-C5 alkyl group or a C6-C20 aryl group, Z each independently represent a carboxyl group, an alkoxycarbonyl group, a cycloalkyloxycarbonyl group, an aryloxycarbonyl group, a hydroxyalkylcarbonyl group, a glycidyloxycarbonyl group, a cyano group or an amide group, and q represents 0 or 1); and (in Formula, R 1 -R 10 each independently represent a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a C1-C6 alkyl group, a C6-C20 aryl group which may contain a heterocyclic atom selected from O, N and S, a C2-C10 alkenyl group, a C2-C10 alkynyl group, a C1-C6 alkoxy group or a C7-C17 aralkyl group, provided that the alkyl group, the aryl group, the alkenyl group, the alkynyl group, the alkoxy group and the aralkyl group may be substituted with a cyano group, and that the alkyl group, the alkenyl group, the alkynyl group, the alkoxy group and the aralkyl group may be substituted with a phenyl group, X each independently represent a C1-C8 alkylene group, a C5-C12 cycloalkylene group or a C6-C20 arylene group, and a and b each independently represent an integer of 1-10) wherein the molecular weight (Mw) of the oligomer is 5,000 or less, as determined in accordance with the method in the description. a resin having a structural unit represented by Formula below; and a binaphthalene compound having a structure represented by Formula below and/or an oligomer thereof: (in Formula, A represents a C1-C5 alkylene group, p represents 0 or 1, K 1 represents a hydrogen atom or a C1-C5 alkyl group, K 2 represents a hydrogen atom, a C1-C5 alkyl group or a C6-C20 aryl group, Z each independently represent a carboxyl group, an alkoxycarbonyl group, a cycloalkyloxycarbonyl group, an aryloxycarbonyl group, a hydroxyalkylcarbonyl group, a glycidyloxycarbonyl group, a cyano group or an amide group, and q represents 0 or 1); and (in Formula, R 1 -R 10 each independently represent a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a C1-C6 alkyl group, a C6-C20 aryl group which may contain a heterocyclic atom selected from O, N and S, a C2-C10 alkenyl group, a C2-C10 alkynyl group, a C1-C6 alkoxy group or a C7-C17 aralkyl group, provided that the alkyl group, the aryl group, the alkenyl group, the alkynyl group, the alkoxy group and the aralkyl group may be substituted with a cyano group, and that the alkyl group, the alkenyl group, the alkynyl group, the alkoxy group and the aralkyl group may be substituted with a phenyl group, X each independently represent a C1-C8 alkylene group, a C5-C12 cycloalkylene group or a C6-C20 arylene group, and a and b each independently represent an integer of 1-10) wherein the molecular weight (Mw) of the oligomer is 5,000 or less, as determined in accordance with the method in the description. A represents a C1-C5 alkylene group, p represents 0 or 1, K 1 represents a hydrogen atom or a C1-C5 alkyl group, K 2 represents a hydrogen atom, a C1-C5 alkyl group or a C6-C20 aryl group, Z each independently represent a carboxyl group, an alkoxycarbonyl group, a cycloalkyloxycarbonyl group, an aryloxycarbonyl group, a hydroxyalkylcarbonyl group, a glycidyloxycarbonyl group, a cyano group or an amide group, and q represents 0 or 1); and (in Formula, R 1 -R 10 each independently represent a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a C1-C6 alkyl group, a C6-C20 aryl group which may contain a heterocyclic atom selected from O, N and S, a C2-C10 alkenyl group, a C2-C10 alkynyl group, a C1-C6 alkoxy group or a C7-C17 aralkyl group, provided that the alkyl group, the aryl group, the alkenyl group, the alkynyl group, the alkoxy group and the aralkyl group may be substituted with a cyano group, and that the alkyl group, the alkenyl group, the alkynyl group, the alkoxy group and the aralkyl group may be substituted with a phenyl group, X each independently represent a C1-C8 alkylene group, a C5-C12 cycloalkylene group or a C6-C20 arylene group, and a and b each independently represent an integer of 1-10) wherein the molecular weight (Mw) of the oligomer is 5,000 or less, as determined in accordance with the method in the description. R 1 -R 10 each independently represent a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a C1-C6 alkyl group, a C6-C20 aryl group which may contain a heterocyclic atom selected from O, N and S, a C2-C10 alkenyl group, a C2-C10 alkynyl group, a C1-C6 alkoxy group or a C7-C17 aralkyl group, provided that the alkyl group, the aryl group, the alkenyl group, the alkynyl group, the alkoxy group and the aralkyl group may be substituted with a cyano group, and that the alkyl group, the alkenyl group, the alkynyl group, the alkoxy group and the aralkyl group may be substituted with a phenyl group, X each independently represent a C1-C8 alkylene group, a C5-C12 cycloalkylene group or a C6-C20 arylene group, and a and b each independently represent an integer of 1-10) wherein the molecular weight (Mw) of the oligomer is 5,000 or less, as determined in accordance with the method in the description.