Optical element and manufacturing method thereof
作者： 隆夫 米原 , 敏彦 尾内 , Toshihiko Onouchi , Mitsuo Sugita , 充朗 杉田
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摘要: PROBLEM TO BE SOLVED: To produce a difference in refractive index between two regions. SOLUTION: In this optical element, non-porous region is provided first and second porous regions, of the higher than that region. COPYRIGHT: (C)2005,JPO&NCIPI
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