| 摘要 |
<P>PROBLEM TO BE SOLVED: To manufacture a low-reflectivity structure without restrictions on size by an easy method. <P>SOLUTION: An aluminum substrate 11 on the surface of which the film of porous alumina 12 having a plurality of micropores 12a produced by anodic oxidation is formed is manufactured, and micropores 12a are filled with SiO<SB>2</SB>13 up to a half depth from bottoms, and diameters of parts which are not filled with the SiO<SB>2</SB>13, of micropores 12a are expanded by pore widening treatment, and parts having diameters stepwise expanded by pore widening treatment are filled with the SiO<SB>2</SB>13, and the aluminum substrate in the bottoms is removed by iodine-methanol, and thus a low-reflectively structure 10 is manufactured. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
