Optical Resin Material And Manufacturing Method Therefor

摘要

An optical resin material includes a multicomponent system whose number of components z which is defined under a counting condition of including original number x(x≧2) of copolymer into the number of components is three or more. Wherein the combination of the components constituting the multicomponent system is selected such that: at least one of respective signs of intrinsic orientational-birefringences of respective homopolymers which correspond to respective monomers constituting respective components of the copolymer and signs of orientational-birefringence properties which the low-molecular-weight organic compound presents in common in the respective homopolymers has a different sign from those of others, and also, at least one of photoelastic-birefringence properties of the respective homopolymers and photoelastic-birefringence properties which the low-molecular-weight organic compound presents in common in the respective homopolymers has a different sign from those of others.

主权项

1. An optical resin material including a multicomponent system whose number of components z which is defined under a counting condition of including original number x(x≧2) of copolymer into the number of components is three or more, wherein
said multicomponent system is constituted only by a copolymer whose original number x is three or more, or is constituted by a copolymer whose original number x is two or more and by at least one kind of low-molecular-weight organic compound which has polarizability anisotropy and which can be oriented in polymer; the combination of the components constituting said multicomponent system is selected such that: at least one of respective signs of intrinsic orientational-birefringences of respective homopolymers which correspond to respective monomers constituting respective components of said copolymer and signs of orientational-birefringence properties which said low-molecular-weight organic compound presents in common in said respective homopolymers has a different sign from those of others, and also, at least one of photoelastic-birefringence properties of said respective homopolymers and photoelastic-birefringence properties which said low-molecular-weight organic compound presents in common in said respective homopolymers has a different sign from those of others; component ratio of the components constituting said multicomponent system is selected such that the orientational-birefringence and the photoelastic-birefringence which said non-birefringent optical resin presents will be canceled simultaneously by utilizing different-sign relation relating to said orientational-birefringence property and different-sign relation relating to said photoelastic-birefringence property; and at least one of the monomers constituting the components of said copolymer is tert-butyl methacrylate.