公开(公告)号：US20160363704A1

公开(公告)日：2016-12-15

申请号：US15177904

申请日：2016-06-09

Applicant: Nanotech Security Corp.

Inventor： Denis Gerard Vendette ,  Charles Douglas MacPherson

IPC: G02B5/28

CPC classification number: G02B5/285 ,  B42D25/387 ,  G02B5/283 ,  G02B5/286

Abstract: Disclosed herein are optical devices, suitable for use as authentication devices for security items and documents including banknotes. The devices are generally static and yet in some embodiments have perceived dynamic optical properties due to their apparent capacity to cause output luminescent radiation to “flash” as the devices are progressively tilted relative to a user or detector of the emitted luminescent radiation. Also disclosed are items and documents comprising such devices, methods for manufacture and use of the devices, and authentication devices suitable to check whether the disclosed authentication device are legitimate or counterfeit.

Abstract translation: 本文公开了适用于包括纸币的安全物品和文件的认证装置的光学装置。 器件通常是静态的，但是在一些实施例中，由于其显示的能力使得输出发光辐射“闪烁”，因为器件相对于所发射的发光辐射的用户或检测器逐渐倾斜，因此具有感知的动态光学特性。 还公开了包括这样的设备的项目和文档，用于制造和使用设备的方法，以及适合于检查所公开的认证设备是合法的还是假冒的认证设备。

公开(公告)号：US10036125B2

公开(公告)日：2018-07-31

申请号：US14708726

申请日：2015-05-11

Applicant: Nanotech Security Corp.

Inventor： Charles Douglas MacPherson ,  Denis Gerard Vendette

IPC: B42D25/387 ,  D21H21/48 ,  B42D25/36 ,  B42D25/324 ,  B42D25/351 ,  B42D25/328

CPC classification number: D21H21/48 ,  B42D25/324 ,  B42D25/328 ,  B42D25/351 ,  B42D25/36 ,  B42D25/387

Abstract: A security device with multiple layers. A substrate provides the backing to a first luminescent layer. An optically variable structure is positioned between the first luminescent layer and a second luminescent layer. Both the first and second luminescent layers emit luminescent radiation when stimulated. When the first layer is stimulated, the optically variable structure filters the emitted luminescent radiation such that the emitted luminescent radiation only escapes the optically variable structure at a predetermined range of emission angles. A user, when viewing the security device from the predetermined range of angles as both layers are stimulated, can see a completed image of a predetermined indicia. When the security device is viewed at angles other than the predetermined range of angles as both layers are stimulated, a user will only see an incomplete image of the predetermined indicia.