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    METHOD OF FORMING A PHOTONIC CRYSTAL MATERIAL
    1.
    发明申请
    METHOD OF FORMING A PHOTONIC CRYSTAL MATERIAL 审中-公开
    形成光子晶体材料的方法

    公开(公告)号：WO2011004190A2

    公开(公告)日：2011-01-13

    申请号：PCT/GB2010051118

    申请日：2010-07-07

    Applicant: RUE DE INT LTD ,  VULPIUS GUENTHER ,  HELLMANN GOETZ PETER ,  SPAHN PETER WOLFGANG ANDREAS

    Inventor： VULPIUS GUENTHER ,  HELLMANN GOETZ PETER ,  SPAHN PETER WOLFGANG ANDREAS

    IPC: B29C55/00

    CPC classification number: B29C55/18 ,  B29C55/023 ,  B29C55/06 ,  B29C55/065 ,  B29K2995/0018 ,  B82Y20/00 ,  Y10T156/1002 ,  Y10T428/24355

    Abstract: A method is provided of forming a film of photonic crystal material. A first process is performed upon a material capable of having a photonic crystal structure, this process causing deformation of the material so as to form a film in which incident light received by the material is selectively reflected or transmitted to generate a first optical effect in the film. A second process is performed upon substantially all of the film which applies a shear stress to the film. This causes a change in the material structure so as to generate a second optical effect in the film, different from the first optical effect, in response to incident light. Security films, devices, articles and documents formed using the method are also discussed.

    Abstract translation: 提供了形成光子晶体材料膜的方法。 对能够具有光子晶体结构的材料执行第一处理，该处理引起材料的变形，从而形成膜，其中由材料接收的入射光被选择性地反射或透射，以产生第一光学效应 电影。 在基本上全部施加剪切应力的膜上进行第二种处理。 这引起材料结构的变化，以响应于入射光而在膜中产生与第一光学效应不同的第二光学效应。 还讨论了使用该方法形成的安全膜，设备，物品和文件。

    COMPOSITE OPTICAL MATERIALS EXHIBITING STRUCTURAL COLOUR
    5.
    发明申请
    COMPOSITE OPTICAL MATERIALS EXHIBITING STRUCTURAL COLOUR 审中-公开
    复合光学材料展示结构颜色

    公开(公告)号：WO2012172084A2

    公开(公告)日：2012-12-20

    申请号：PCT/EP2012/061513

    申请日：2012-06-15

    Applicant: DEUTSCHES KUNSTSTOFF-INSTITUT ,  HELLMANN, Götz Peter ,  SPAHN, Peter Wolfgang Andreas

    Inventor： HELLMANN, Götz Peter ,  SPAHN, Peter Wolfgang Andreas

    IPC: G02B1/04

    CPC classification number: G02B1/005 ,  B82Y20/00 ,  G02B1/04 ,  G02B5/1828 ,  C08L101/12

    Abstract: A composite optical material such as a polymer opal is provided having a three dimensional arrangement of core particles distributed in a matrix. The refractive index of the material of the core particles is different to the refractive index of the material of the matrix and the three dimensional arrangement has a periodicity such that, when a surface of the material is illuminated with white light, the composite material exhibits structural colour. The three dimensional periodic arrangement is a reduced symmetry arrangement based on a crystallographic close-packed arrangement but strained therefrom to have reduced symmetry compared to the crystallographic close-packed arrangement. Bragg reflections from planes that would be forbidden in the crystallographic close-packed arrangement are allowed and visible in the reduced symmetry arrangement. This provides a variation in intensity and/or wavelength of structural colour with rotation of the material about an axis perpendicular to the surface when viewed obliquely while the viewing angle remains substantially constant. Also disclosed are methods for the manufacture of such material.

    Abstract translation: 提供了诸如聚合蛋白石的复合光学材料，其具有分布在矩阵中的核心颗粒的三维排列。 核心颗粒的材料的折射率不同于基质的材料的折射率，三维布置具有周期性，使得当材料的表面被白光照射时，复合材料表现出结构 颜色。 三维周期性布置是基于结晶密堆积布置的减小的对称布置，但是与晶体密堆积布置相比具有减小的对称性。 在晶体学紧密堆积的布置中被禁止的平面的布拉格反射在缩小的对称布置中被允许和可见。 这提供了结构颜色的强度和/或波长的变化，同时当观察角度基本保持不变时，材料围绕垂直于表面的轴线的旋转倾斜观察。 还公开了用于制造这种材料的方法。

    COMPOSITE OPTICAL MATERIALS EXHIBITING STRUCTURAL COLOUR
    9.
    发明申请
    COMPOSITE OPTICAL MATERIALS EXHIBITING STRUCTURAL COLOUR 审中-公开
    复合光学材料展示结构颜色

    公开(公告)号：WO2012172084A3

    公开(公告)日：2013-05-02

    申请号：PCT/EP2012061513

    申请日：2012-06-15

    Applicant: FRAUNHOFER GES FORSCHUNG ,  HELLMANN GOETZ PETER ,  SPAHN PETER WOLFGANG ANDREAS

    Inventor： HELLMANN GOETZ PETER ,  SPAHN PETER WOLFGANG ANDREAS

    IPC: G02B1/04 ,  B82Y20/00 ,  G02B1/00 ,  G02B5/18

    CPC classification number: G02B1/005 ,  B82Y20/00 ,  G02B1/04 ,  G02B5/1828 ,  C08L101/12

    Abstract: A composite optical material such as a polymer opal is provided having a three dimensional arrangement of core particles distributed in a matrix. The refractive index of the material of the core particles is different to the refractive index of the material of the matrix and the three dimensional arrangement has a periodicity such that, when a surface of the material is illuminated with white light, the composite material exhibits structural colour. The three dimensional periodic arrangement is a reduced symmetry arrangement based on a crystallographic close-packed arrangement but strained therefrom to have reduced symmetry compared to the crystallographic close-packed arrangement. Bragg reflections from planes that would be forbidden in the crystallographic close-packed arrangement are allowed and visible in the reduced symmetry arrangement. This provides a variation in intensity and/or wavelength of structural colour with rotation of the material about an axis perpendicular to the surface when viewed obliquely while the viewing angle remains substantially constant. Also disclosed are methods for the manufacture of such material.

    Abstract translation: 提供了诸如聚合蛋白石的复合光学材料，其具有分布在矩阵中的核心颗粒的三维排列。 核心颗粒的材料的折射率不同于基质的材料的折射率，三维布置具有周期性，使得当材料的表面被白光照射时，复合材料表现出结构 颜色。 三维周期性布置是基于结晶密堆积布置的减小的对称布置，但是与晶体密堆积布置相比具有减小的对称性。 在晶体学紧密堆积的布置中被禁止的平面的布拉格反射在缩小的对称布置中被允许和可见。 这提供了结构颜色的强度和/或波长的变化，同时当观察角度基本保持不变时，材料围绕垂直于表面的轴线的旋转倾斜观察。 还公开了用于制造这种材料的方法。

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