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    • 8. 发明授权
    • Lens of gradient dielectric constant and methods of production
    • 透镜的梯度介电常数和生产方法
    • US06433936B1
    • 2002-08-13
    • US09930576
    • 2001-08-15
    • Michael P. CarpenterMary M. OswardDavid A. Gibbs
    • Michael P. CarpenterMary M. OswardDavid A. Gibbs
    • G02B300
    • G02B3/0087B29C39/025B29C39/028B29C67/04B29C2791/008B29D11/00009B29K2105/002B29K2105/16B29K2105/251B29K2995/0006H01Q15/08
    • Disclosed is a lens of gradient dielectric constant and methods for the production of same. The lens includes an inner core comprising a cured or fused substantially homogenous blend of glass spheres, curable or fusible binder and, as needed to increase dielectric constant, a low-loss dielectric material. The inner core preferably has a dielectric constant of about 2.0, and an interstitial void volume (representing trapped air space between elements of the cured or fused material) of from about 30% to about 50%. The lens also includes an outer shell layer comprising a cured or fused substantially homogenous blend of hollow glass spheres and curable or fusible resin. The outer shell layer preferably has a dielectric constant of about 1.0, and an interstitial void volume of from about 30% to about 50%. In addition, the lens includes a minimum of one, and preferably two or more intermediate layers, the intermediate layers having a dielectric constant falling between 1 and 2. The intermediate layers are comprised of a cured substantially homogenous blend of glass spheres, resin and, as needed to increase dielectric constant, a low-loss dielectric material. As is the case with the inner core and outer shell layers, the intermediate layer(s) have an interstitial void volume of from about 30% to about 50%. Also disclosed are methods of production for lenses of the type described above.
    • 公开了一种梯度介电常数的透镜及其制造方法。 透镜包括内芯,其包含固化或熔融的基本上均匀的玻璃球,可固化或可熔粘合剂的共混物,并且根据需要增加介电常数低损耗介电材料。 内芯优选具有约2.0的介电常数和约30%至约50%的间隙空隙体积(表示固化或熔融材料的元件之间的截留空气空间)。 透镜还包括外壳层,其包含中空玻璃球和可固化或可熔树脂的固化或熔融基本均匀的共混物。 外壳层的介电常数优选为约1.0,间隙空隙体积为约30%至约50%。 此外,透镜包括介电常数介于1和2之间的中间层中的至少一个,优选两个或更多个中间层。中间层由玻璃球,树脂和 根据需要增加介电常数,低损耗介电材料。 如内核和外壳层的情况一样,中间层具有约30%至约50%的间隙空隙体积。 还公开了上述类型的透镜的生产方法。