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    • 1. 发明授权
    • Antireflection film
    • 防反射膜
    • US5591517A
    • 1997-01-07
    • US511730
    • 1995-08-07
    • Naoki TakamiyaMakoto NakaoAkira YazawaAtumi Wakabayashi
    • Naoki TakamiyaMakoto NakaoAkira YazawaAtumi Wakabayashi
    • B60K37/00G02B1/11B32B3/26
    • B60K37/00G02B1/11B60K2350/2082Y10S428/913Y10T428/249953Y10T428/31504Y10T428/31507Y10T428/31511Y10T428/31551Y10T428/31681Y10T428/31725Y10T428/31736Y10T428/31786
    • An antireflection film comprised of a transparent base material, a first layer with a refractive index N.sub.1 of 1.45-2.10, adhered onto the base material, and a second layer with a refractive index N.sub.2 at least 0.1 smaller than N.sub.1, adhered onto the first layer. Thickness D.sub.1 (nm) of the first layer is smaller than 0.5.multidot.L.sub.1 /N.sub.1, thickness D.sub.2 (nm) of the second layer is smaller than 0.5.multidot.L.sub.1 /N.sub.2 wherein L.sub.1 is a wavelength (nm) of a visible light, and at least said first layer contains a light absorber having a principal absorbing wavelength L.sub.2 (nm) satisfying the formula:(L.sub.1 +70).ltoreq.L.sub.2 or (L.sub.1 -50).gtoreq.L.sub.2.Alternatively, thickness D.sub.1 (nm) of the first layer is between 0.5-L.sub.1 /N.sub.1 and 0.75.multidot.L.sub.1 /N.sub.1, thickness D.sub.2 (nm) of the second layer is smaller than 0.5.multidot.L.sub.1 /N.sub.2, and at least said first layer contains a light absorber having a principal absorbing wavelength L.sub.2 (nm) satisfying the formula:(L.sub.1 -200).ltoreq.L.sub.2 .ltoreq.(L.sub.1 +200).
    • 由透明基材,折射率N1为1.45〜2.10的第一层粘合到基材上的反射防反射膜,具有小于N1的折射率N2至少为0.1的第二层附着在第一层上 。 第一层的厚度D1(nm)小于0.5xL1 / N1,第二层的厚度D2(nm)小于0.5xL1 / N2,其中L1是可见光的波长(nm),并且至少所述 第一层包含具有满足以下公式的主吸收波长L2(nm)的光吸收体:(L1 + 70)= L2或(L1-50)> / = L2。或者,第一层的厚度D1(nm) 在0.5-L1 / N1和0.75xL1 / N1之间,第二层的厚度D2(nm)小于0.5xL1 / N2,并且至少所述第一层包含具有满足主要吸收波长L2(nm)的光吸收体 公式:(L1-200)