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    • 30. 发明授权
    • High speed optical protection using smectic liquid crystal
    • 使用近晶晶体的高速光学保护
    • US5159475A
    • 1992-10-27
    • US759054
    • 1991-09-05
    • James L. FergasonNing S. C. FanJesse D. Buck
    • James L. FergasonNing S. C. FanJesse D. Buck
    • G02F1/00G02F1/35
    • G02F1/3511G02F1/0063
    • An apparatus for responding to incident electromagnetic radiation includes a first medium having a surface and through which incident electromagnetic radiation may be transmitted, a second such medium having a surface, the surfaces being generally parallel, and smectic liquid crystal between said surfaces and aligned generally in parallel in layers that extend generally parallel to each other and perpendicularly to such surfaces (bookshelf alignment), the liquid crystal material being operative to undergo self-focusing in response to a characteristic of incident electromagnetic radiation exceeding a value and being cooperative with at least one of such media thereby automatically to limit the energy or energy density of electromagnetic radiation exiting the apparatus.
    • 用于响应入射电磁辐射的装置包括具有表面的入射电磁辐射的第一介质和可以透射入射电磁辐射的第一介质,具有表面的第二介质,所述表面大致平行,并且所述表面之间的近晶液晶, 平行于彼此大致平行并且垂直于这些表面(书架对准)的层,液晶材料可操作以响应入射电磁辐射的特性经历自聚焦,超过一个值并与至少一个 这样的介质从而自动限制离开设备的电磁辐射的能量或能量密度。