| 摘要 |
PURPOSE: An optical material and an optical element using the same are provided to ensure high transmittance, low optic scattering property, high refractivity, low Abbe's number(vd), high secondary scattering property(&thgr;g, F) and low brittleness. CONSTITUTION: An optical material comprises a polymer of a mixture of: a sulfur-containing compound containing, in a molecule, at least one kind of group selected from the group consisting of a sulfide group, a sulphone group, a sulfoxide group, a thiol group, and a thioester group; a fluorene compound at least having a fluorene skeleton; and an energy polymerization initiator, wherein the polymer of the mixture has a refractive index of 1.65 or more to less than 1.92 and an Abbe constant of 15 or more to less than 22; and a difference Δ&thgr;g, F between a secondary dispersion property(&thgr;g, F) of the polymer of the mixture and a secondary dispersion property(&thgr;g, F) expressed by the following expression is 0.05 or more to less than 0.13, &thgr;g, F=0.6438-0.001682 vd, where vd is an Abbe constant.
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