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    • 36. 发明公开
    • Micro-optic security and image presentation system
    • 微光学安全和图像显示系统
    • EP2385412A3
    • 2012-11-14
    • EP11002547.5
    • 2004-11-22
    • Visual Physics, LLC
    • Steenblik, Richard A.Hurt, Mark J.Jordan, Gregory R.
    • G02B27/22B42D15/00G02B3/00B42D15/10B44F1/06B44F1/10G02B27/06
    • B42D25/41B42D25/00B42D25/29B42D25/342B42D2033/24B42D2035/08B42D2035/20B42D2035/44B44F1/06B44F1/10D21H21/44G02B3/0031G02B3/0043G02B3/0056G02B27/06G02B27/2214Y10T29/49826
    • A synthetic magnification micro-optic system comprising:
      (a) one or more optical spacers;
      (b) a micro image comprised of a periodic planar array of a plurality of image icons having an axis of symmetry about at least one of its planar axes, and positioned on or next to the optical spacer; and
      (c) a periodic planar array of image icon focusing elements having an axis of symmetry about at least one of its planar axes, the axis of symmetry being the same planar axis as that of the micro image planar array,

      each focusing element being an aspheric focusing element having an effective diameter of less than 50 microns and being associated with an image icon, wherein the focal length is shortest for normal viewing and increases as the viewing angle becomes more oblique
      or
      each focusing element being a polygonal base multi-zonal lens;
      wherein the scale ratio of the repeat period of the image icons to the repeat period of the focusing elements is greater than 1 or less than 1 and the axes of symmetry of the periodic planar array of the micro image and the periodic planar array of image icon focusing elements are aligned.
    • 一种合成放大微光学系统,包括:(a)一个或多个光学间隔物; (b)包含多个图像图标的周期性平面阵列的微图像,所述多个图像图标具有围绕其平面轴线中的至少一个的对称轴线,并且定位在所述光学间隔物上或其旁边; (c)图像图标聚焦元件的周期性平面阵列,其具有关于其平面轴线中的至少一个的对称轴线,所述对称轴线与所述微图像平面阵列的平面轴线相同,每个聚焦元件为 具有小于50微米的有效直径并且与图像图标相关联的非球面聚焦元件,其中焦距对于正常观看是最短的并且随着视角变得更倾斜而增加或者每个聚焦元件是多边形基底多层透镜 ; 其中图像图标的重复周期与聚焦元件的重复周期的缩放比率大于1或小于1,并且微图像的周期性平面阵列和图像图标的周期性平面阵列的对称轴 聚焦元件对齐。