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US5783636A Graded-refractive-index optical plastic material and method for its production 失效
渐变折射率光学塑料材料及其制造方法

Graded-refractive-index optical plastic material and method for its
production
摘要:
A graded-refractive-index optical plastic material composed of an amorphous fluoropolymer and at least one material which differs from the polymer in refractive index by at least 0.001, wherein the material is so distributed as to have a concentration gradient in a specific direction, and a method for its production.
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