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发明授权
CN101218090B 叠层反射体、认证卡、条形码标签、认证系统以及认证区域形成系统 失效 - 权利终止

叠层反射体、认证卡、条形码标签、认证系统以及认证区域形成系统
摘要：
本发明提供一种在相位差薄膜部分地产生分子取向的缓和从而形成认证信息的潜像时不需要复杂的工序而且不会由于在表面形成凹凸而使潜像可见化的叠层反射体。其是一种具有设定成相对观察波长λ的相位差Δnd1为m×λ/4-λ/16≤Δnd1≤m×λ/4m+λ/16(m为正的奇数)的相位差薄膜(10)和在该相位差薄膜(10)的背面侧叠层的金属反射板(11)的叠层反射体(1)，将在相位差薄膜(10)上预先形成的规定的认证信息的认证区域(10a)形成为其相位差Δnd2为n×λ/4-λ/8≤Δnd2≤n×λ/4+λ/8(n为0或正的偶数，其中，n＜m)，进而在相位差薄膜(10)的正面侧形成光散射层(12)。
摘要（英）：

The invention provides a multilayer reflector in which a latent image of authentication information is formed by partly relaxing molecule orientation in a phase difference film without needing any complex step so as to prevent the latent image to become visual because of formation of roughness of the surface. The multilayer reflector (1) has a phase difference film (10) where the phase difference deltand1 to the observation wavelength is m/4*lambda/16= deltand1=lambdam/4m+lambda/16 (m is a positive odd number) and a metal reflective plate (11) formed on the back of the phase difference film (10). An authentication region (10a) having predetermined authentication information is so formed in the phase difference film (10) that the phase difference deltand2 is n*lambda/4-lambda/8= deltand2=n*lambda/4+lambda/8 (n is 0 or a positive even number and n

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