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    • 7. 发明授权
    • Anti-counterfeiting process using lenticular optics and color masking
    • 使用透镜光学和彩色掩蔽的防伪工艺
    • US5303370A
    • 1994-04-12
    • US976196
    • 1992-11-13
    • Scott BroshTimothy Wright
    • Scott BroshTimothy Wright
    • G03B35/00G06K7/00G06K19/10G07F7/08G09C5/00H04L9/00
    • G07F7/086
    • An image of a symbol or other indicium of origin or authenticity is encrypted, and printed on the item or a label in superposition with a color mask. In a preferred embodiment, an intermediate parallax record is formed of a series of images of a symbol or other indicium, each differing from the preceding one by a predetermined amount of parallax (i.e. change of viewing angle.) A multiple exposure of the series of intermediate parallax record images is made through a lenticular screen to create the encrypted image of the indicium. The lenticular screen and the medium on which the multiple exposure is made are moved relative to each other between exposures. The encrypted image and the superimposed color mask are then printed as a composite image to produce an unintelligible criss-cross of colored lines. When viewed through a lenticular screen which matches that used to create the encrypted image, the original indicium is revealed in clear form.
    • 符号或其他原产地或真实性标记的图像被加密,并且用彩色掩模叠加在项目或标签上。 在优选实施例中,中间视差记录由符号或其他标记的一系列图像形成,每个图像与前一个不同于预定量的视差(即,视角的改变)。多次曝光 通过透镜屏幕制作中间视差记录图像,以创建标记的加密图像。 在曝光之间,透镜屏幕和进行多次曝光的介质相对于彼此移动。 然后将加密图像和叠加的彩色掩模印刷为合成图像,以产生无法理解的彩色线条的十字交叉。 当通过与用于创建加密图像相匹配的透镜屏幕观看时,原始标记以透明的形式显示。