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    • 3. 发明申请
    • OVD CONTAINING DEVICE
    • 包含OVD的设备
    • US20090251749A1
    • 2009-10-08
    • US12420367
    • 2009-04-08
    • Lily O'BOYLEGarth ZAMBORYSalvatore F. D'AMATO
    • Lily O'BOYLEGarth ZAMBORYSalvatore F. D'AMATO
    • G03H1/22G02B5/18B42D15/00
    • B32B37/04B32B15/00B32B27/08B42D15/00G03H1/0011G03H1/0244G03H1/0252G03H2001/187G03H2001/188G03H2250/10G03H2250/36Y10T428/31507
    • A holographic overlay is provided, including: a polycarbonate substrate having a first side and a second side, a diffractive structure cast upon the first side of the polycarbonate substrate, and a reflection-enhancing coating on at least a part of the diffractive structure; wherein the second side of the polycarbonate substrate provides a substantially flat external surface of the overlay capable of fusing to a conforming surface in the presence of heat and pressure without an adhesive. Optionally, the overlay is laser-engraved so as to form ablated voids in the metal coating and carbonize the laser engravable polycarbonate under the ablated voids. According to another aspect of the invention, a metal coating on a hologram is made substantially transparent using a laser to form a transparent portion of a hologram. Optionally, it is done after applying the hologram to an object such as a card, a document, etc., in register with underlying information to ensure its visibility and continuity of the hologram.
    • 提供了一种全息覆盖层,包括:具有第一侧和第二侧的聚碳酸酯基底,在聚碳酸酯基底的第一侧上铸造的衍射结构,以及至少部分衍射结构的反射增强涂层; 其中所述聚碳酸酯基材的第二面提供覆盖层的基本上平坦的外表面,其能够在没有粘合剂的情况下在热和压力存在的情况下熔合到符合表面。 任选地,覆盖层被激光雕刻,以在金属涂层中形成消融的空隙,并在烧蚀的空隙下碳化激光可雕刻的聚碳酸酯。 根据本发明的另一方面,使用激光器将全息图上的金属涂层制成基本上透明的,以形成全息图的透明部分。 可选地,在将全息图应用于诸如卡,文档等的对象之后,与底层信息对齐,以确保其全息图的可见性和连续性。