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    • 5. 发明申请
    • SECURITY DEVICES
    • 安全设备
    • US20140226212A1
    • 2014-08-14
    • US14236206
    • 2012-07-30
    • Adam ListerJames Peter Snelling
    • Adam ListerJames Peter Snelling
    • B42D15/00G02B5/04G02B5/26
    • B42D25/45B41M3/148B42D25/29B42D25/328B42D25/351B42D25/355B42D2033/10D21H21/42G02B5/045G02B5/26
    • The present invention relates to improvements in security devices that can be used in various authenticating or security applications, and in particular to an optically variable security device which can be viewed under low light conditions. The security device comprises a light deflection structure having a first side and a second opposing side. A colourshifting layer is applied to the first side of the light deflection structure and a reflection layer is applied to at least a first region of the second side of the light deflection structure so as to provide a strong reflection in a direction substantially parallel to the incident light source when the direction of the incident light is at an angle away from the normal to the security device. The security device has at least one second region in which the reflection layer is absent, said first and second regions defining indicia.
    • 本发明涉及可用于各种认证或安全应用的安全设备的改进,特别涉及一种可在低光条件下观看的光学可变安全设备。 安全装置包括具有第一侧和第二相对侧的光偏转结构。 将色移层施加到光偏转结构的第一侧,并且将反射层施加到光偏转结构的第二侧的至少第一区域,以便在基本上平行于事件的方向上提供强反射 当入射光的方向与安全装置的法线成一角度时,光源。 安全装置具有至少一个第二区域,其中反射层不存在,所述第一和第二区域限定标记。
    • 8. 发明授权
    • Security devices
    • 安全设备
    • US09348070B2
    • 2016-05-24
    • US14236206
    • 2012-07-30
    • Adam ListerJames Peter Snelling
    • Adam ListerJames Peter Snelling
    • G02B27/10G03B21/60G02B5/26B41M3/14D21H21/42G02B5/04B42D25/29B42D25/355B42D25/328
    • B42D25/45B41M3/148B42D25/29B42D25/328B42D25/351B42D25/355B42D2033/10D21H21/42G02B5/045G02B5/26
    • The present invention relates to improvements in security devices that can be used in various authenticating or security applications, and in particular to an optically variable security device which can be viewed under low light conditions. The security device comprises a light deflection structure having a first side and a second opposing side. A colorshifting layer is applied to the first side of the light deflection structure and a reflection layer is applied to at least a first region of the second side of the light deflection structure so as to provide a strong reflection in a direction substantially parallel to the incident light source when the direction of the incident light is at an angle away from the normal to the security device. The security device has at least one second region in which the reflection layer is absent, said first and second regions defining indicia.
    • 本发明涉及可用于各种认证或安全应用的安全设备的改进,特别涉及一种可在低光条件下观看的光学可变安全设备。 安全装置包括具有第一侧和第二相对侧的光偏转结构。 向光偏转结构的第一侧施加着色层,并且将反射层施加到光偏转结构的第二侧的至少第一区域,以便在基本上平行于事件的方向上提供强反射 当入射光的方向与安全装置的法线成一角度时,光源。 安全装置具有至少一个第二区域,其中反射层不存在,所述第一和第二区域限定标记。