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Dichroic ultraviolet light filters

机译:二向色性紫外线滤光片

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With the intention to produce dichroic filters for use in photoluminescent systems that rely on polarized UV light, we synthesized a number of linear, dichroic dyes, which absorb mainly in the near-UV range of the electromagnetic spectrum. These dyes were designed for compatibility with common thermoplastic polymers such as linear low-density poly(ethylene), poly(ethylene terephthalate), and polyamide-12. Films of these host polymers that consisted of 0.2% by weight of various dichroic UV dyes were produced by common melt-processing schemes. Uniaxial drawing of these films yielded highly dichroic UV filters with dichroic ratios in absorption that in some cases exceeded 100. The fact that these free-standing films display little or no coloration and are environmentally stable makes them useful for various applications that involve generation of polarized UV light.
机译:为了生产用于依赖偏振紫外光的光致发光系统中的二向色性滤光片,我们合成了许多线性,二向色性染料,它们主要在电磁光谱的近紫外范围内吸收。设计这些染料是为了与常见的热塑性聚合物(如线性低密度聚(乙烯),聚(对苯二甲酸乙二醇酯)和聚酰胺12)相容。通过常规的熔融加工方案制备由0.2重量%的各种二色性UV染料组成的这些主体聚合物的膜。这些薄膜的单轴拉伸产生了高度二向色的UV滤光片,其吸收中的二向色比在某些情况下超过了100。这些自立式薄膜几乎不显示或不着色,并且对环境稳定,这一事实使它们可用于涉及偏光产生的各种应用紫外线。

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    《Applied optics》 |2003年第28期|共9页
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