OPTICAL DEVICE EXHIBITING COLOR SHIFT UPON ROTATION
    7.
    发明申请
    OPTICAL DEVICE EXHIBITING COLOR SHIFT UPON ROTATION 有权
    光学设备展示色彩转换

    公开(公告)号:US20130285362A1

    公开(公告)日:2013-10-31

    申请号:US13931360

    申请日:2013-06-28

    IPC分类号: G02B5/28 B42D15/00 B29D11/00

    摘要: An optical device exhibiting a color shift upon rotation is disclosed. The optical device has a textured surface having a relief structure finer than a human eye resolution but large enough not to exhibit diffraction effects. The textured surface is coated with an interference thin film that exhibits a color shift with tilt. A uniform color seen at one angle of rotation changes to another uniform color when the optical device is rotated in its own plane. A method of manufacturing of such an optical device, as well as the use of the optical device as an optical security and authentication element, is also disclosed.

    摘要翻译: 公开了一种在旋转时呈现色移的光学装置。 光学装置具有纹理表面,其具有比人眼分辨率更细的浮雕结构,但是足够大以不显示衍射效应。 纹理化表面涂有表现出倾斜色移的干涉薄膜。 当光学装置在其自身的平面中旋转时,以一个旋转角度看到的均匀的颜色变为另一种均匀的颜色。 还公开了这种光学装置的制造方法以及光学装置作为光学安全和认证元件的使用。

    Covert security coating
    9.
    发明授权
    Covert security coating 有权
    隐蔽安全涂层

    公开(公告)号:US07630109B2

    公开(公告)日:2009-12-08

    申请号:US11424033

    申请日:2006-06-14

    IPC分类号: G03H1/00 G02B5/18

    摘要: A multilayer thin film filter is disclosed an organic dielectric layer serving as a spacer layer in a Fabry-Perot structure. The dielectric has embossed regions of varying thicknesses wherein the thickness within a region is substantially uniform. Each different region of a different thickness produces a different color (shift). The size of one of the embossed adjacent regions is such that the color of said one region is uniform and cannot be seen by a human eye as different in color from the uniform color of an adjacent region thereto, and wherein the color within a region can be seen with magnification of at least 10:1. This serves as a covert color coding system useful as a security device.

    摘要翻译: 公开了一种用于法布里 - 珀罗结构的间隔层的有机介电层的多层薄膜滤光片。 电介质具有不同厚度的压花区域,其中区域内的厚度基本上是均匀的。 不同厚度的不同区域产生不同的颜色(偏移)。 压花相邻区域之一的尺寸使得所述一个区域的颜色是均匀的,并且人眼不能看到与其相邻区域的均匀颜色不同的颜色,并且其中区域内的颜色可以 可以放大至少10:1。 这用作用作安全装置的隐蔽颜色编码系统。