| 摘要 |
An optical multilayer thin-film system ( 11 ) includes a number of high refractive index layers ( 13 ), and a number of low refractive index layers ( 14 ) alternately laminated with the high refractive index layers. Each high refractive index layer has an optical thickness larger than that of each low refractive index layer. When such a multilayer thin-film system is applied to an optical element, spectral shift with respect to variation of the incident light angle is significantly reduced.
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