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    • 2. 发明授权
    • Thin film optical variable article and method having gold to green color
shift for currency authentication
    • 薄膜光学可变制品和方法具有金色到绿色的颜色转换用于货币认证
    • US4930866A
    • 1990-06-05
    • US204723
    • 1988-06-10
    • Peter H. BerningRoger W. Phillips
    • Peter H. BerningRoger W. Phillips
    • B42D15/00
    • B42D25/29B42D2035/24Y10S359/90
    • Thin film optical variable article to be used in a reflection mode having a gold to green color shift with angle for currency authentication and adapted to be carried by a substantially opaque currency sheet which serves as a substrate. The article includes a substantially transparent, optically thick element carrying a colorant and having first and second surfaces and a multilayer interference coating carried on one of said first and second surfaces. The article is adapted to be carried by the currency sheet so that the coating faces the currency sheet and the colorant carrying element serves as a superstrate facing the incident light. The multilayer interference coating is comprised of a substantially opaque layer of aluminum nearest the substrate, followed by a layer of magnesium fluoride, and then by a layer of chromium having substantial transmission. The colorant has a yellow hue whereby at normal incidence of light the article has a coppery-gold color shifting towards a vivid green at non-normal incidence of light. The colorant operates in an essentially subtractive mode to cause a modification of the normal incidence gold color and the color shift with angle properties as seen by reflection.
    • 用于具有金色至绿色的反射模式的薄膜光学可变制品,其具有用于货币认证的角度并且适于由用作基板的基本上不透明的货币单元承载。 所述制品包括携带着色剂并且具有第一和第二表面的基本上透明的光学厚的元件,以及承载在所述第一和第二表面之一上的多层干涉涂层。 该物品适于由货币单据携带,使得涂层面向货币单,并且着色剂承载元件用作面对入射光的上表面。 多层干涉涂层由最接近基底的基本上不透明的铝层组成,之后是一层氟化镁,然后由具有实质透射率的铬层组成。 着色剂具有黄色色调,因此在正常入射光下,该物品具有以非正常入射光转向生动的绿色的铜色金色。 着色剂以基本上减法的方式进行操作,以便通过反射观察到正常入射金色和颜色偏移与角度特性的变化。
    • 3. 发明授权
    • Thin film optically variable article and method having gold to green
color shift for currency authentication
    • 用于货币认证的具有金色至绿色色彩的薄膜光学变量制品和方法
    • US4779898A
    • 1988-10-25
    • US88144
    • 1987-08-21
    • Peter H. BerningRoger W. Phillips
    • Peter H. BerningRoger W. Phillips
    • B42D15/00
    • B42D25/29B42D2035/24Y10S283/904
    • Thin film optical variable article to be used in a reflection mode having a gold to green color shift with angle for currency authentication and adapted to be carried by a substantially opaque currency sheet which serves as a substrate. The article includes a substantially transparent, optically thick element carrying a subtractive colorant and having first and second surfaces and a multilayer interference coating carried on one of said first and second surfaces. The article is adapted to be carried by the currency sheet so that the coating faces the currency sheet and the colorant carrying element serves as a superstrate facing the incident light. The multilayer interference coating is comprised of a substantially opaque layer of aluminum nearest the substrate, followed by a layer of magnesium fluoride, and then by a layer of chromium having substantial transmission. The colorant has a yellow hue. At normal incidence of light the article has a coppery-gold color shifting towards a vivid green at non-normal incidence of light. The colorant operates in an essentially subtractive mode in combination with the multilayer interference coating to provide the color shift from gold to green at two different angles of incidence and substantially no color at higher angles of incidence to cause a modification of the normal incidence gold color and the color shift with angle properties as seen by reflection.
    • 用于具有金色至绿色的反射模式的薄膜光学可变制品,其具有用于货币认证的角度并且适于由用作基板的基本上不透明的货币单元承载。 所述制品包括携带减色剂并且具有第一和第二表面的基本上透明的光学厚的元件以及承载在所述第一和第二表面之一上的多层干涉涂层。 该物品适于由货币单据携带,使得涂层面向货币单,并且着色剂承载元件用作面对入射光的上表面。 多层干涉涂层由最接近基底的基本上不透明的铝层组成,之后是一层氟化镁,然后由具有实质透射率的铬层组成。 着色剂具有黄色色调。 在正常光照下,该物品在非正常发光情况下,呈铜绿色转向生动的绿色。 着色剂以与多层干涉涂层组合的基本上减色模式操作,以在两个不同的入射角度提供从黄金到绿色的颜色偏移,并且在较高的入射角度基本上没有颜色,以引起正常入射的金色的变化, 通过反射看到的角度属性的颜色偏移。
    • 5. 发明授权
    • Thin film optically variable article and method having gold to green
color shift for currency authentication
    • US4705300A
    • 1987-11-10
    • US935065
    • 1986-11-21
    • Peter H. BerningRoger W. Phillips
    • Peter H. BerningRoger W. Phillips
    • B42D15/00
    • B42D25/29
    • Thin film optical variable article to be used in a reflection mode having a gold to green color shift with angle for currency authentication and adapted to be carried by a substantially opaque currency sheet which serves as a substrate. The article includes a substantially transparent, optically thick element carrying a subtractive colorant and having first and second surfaces and a multilayer interference coating carried on one of said first and second surfaces. The article is adapted to be carried by the currency sheet so that the coating faces the currency sheet and the colorant carrying element serves as a superstrate facing the incident light. The multilayer interference coating is comprised of a substantially opaque layer of aluminum nearest the substrate, followed by a layer of magnesium fluoride, and then by a layer of chromium having substantial transmission. The colorant has a yellow hue. At normal incidence of light the article has a coppery-gold color shifting towards a vivid green at non-normal incidence of light. The colorant operates in an essentially subtractive mode in combination with the multilayer interference coating to provide the color shift from gold to green at two different angles of incidence and substantially no color at higher angles of incidence to cause a modification of the normal incidence gold color and the color shift with angle properties as seen by reflection.