公开(公告)号：US20160333526A1

公开(公告)日：2016-11-17

申请号：US14708726

申请日：2015-05-11

申请人： Nanotech Security Corp.

发明人： Charles Douglas MACPHERSON ,  Denis Gerard VENDETTE

IPC分类号： D21H21/48 ,  D21H21/30 ,  B42D25/36

CPC分类号： D21H21/48 ,  B42D25/324 ,  B42D25/328 ,  B42D25/351 ,  B42D25/36 ,  B42D25/387

摘要： 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.

摘要翻译： 具有多层的安全设备。 衬底将背衬提供给第一发光层。 光学可变结构位于第一发光层和第二发光层之间。 当被刺激时，第一和第二发光层都发射发光辐射。 当第一层被刺激时，光学可变结构对所发射的发光辐射进行滤光，使得所发射的发光辐射仅在预定的发射角度范围内逸出光学可变结构。 当两个层被刺激时，用户从预定的角度范围观察安全设备时，可以看到预定标记的完整图像。 当两个层被刺激时，以预定角度范围的角度观看安全装置时，用户将仅看到预定标记的不完整图像。