| abstract |
The object of the present invention is to provide an optical member that can cut off ultraviolet rays even without using an ultraviolet absorber in the resin, using an ultraviolet cut filter, or using an ultraviolet absorbing coating; and a thermoplastic resin used for the optical member. The thermoplastic resin of the present invention contains a three-dimensional structure-based component unit. The three-dimensional structure-based component unit contains four or more aromatic groups selected from the group consisting of a monocyclic aromatic group and a condensed polycyclic aromatic group. The three-dimensional structure system component unit is three or more monocyclic aromatic groups and/or heterocyclic aromatic groups forming a conjugate structure, or one or more monocyclic aromatic groups and one or more condensed polycyclic aromatic groups A conjugated structure is formed, or two or more condensed polycyclic aromatic groups form a conjugated structure. In a 0.1% by mass dichloromethane solution, the transmittance of wavelength 355nm is less than 20%, and the transmittance of wavelength 500nm The rate is over 90%. |