| 摘要 |
PROBLEM TO BE SOLVED: To provide an excellently uniform polarizer with stable good performance without dispersing any metallic particle by arranging multiple rod metallic bodies having light absorbing anisotropy at substantially equal intervals in a transparent base body and specifying the length of the major axis and the minor axis of the rod metal body. SOLUTION: In a polarizer 1, a polarizing part is arranged in transparent base plate body 2 made of glass, crystal, or the like. This polarizing part is constructed of a rod metallic body 3 loaded in a thin hole 2c of the base body 2 and provided with light absorbing anisotropy. In the metallic body 3, a minor axis length is 5-50 nm and a major axis length is 500-50000 nm, while an interval between the adjacent rod metallic bodies 3 is 50-200 nm. The base body 2 is made of silica glass, polycarbonate, or the like, while the rod metallic body 3 is made of metal element such as Cu, Ni, Co. A light beam L1 incident from the side face side of the base body 2 is absorbed in the major axis direction of the rod metallic body 3 and emitted as a polarized light L2 from which a major axis directional constituent is removed.
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