| 摘要 |
Provided are a filter unit 4 in which a plurality of metallic particles 42 having two or more anisotropic axes are disposed with uniform orientations on a surface or interior part of a transparent dielectric medium 41 transmitting visible light, and direction adjusting means 3 for changing, in a relative manner, the polarization of incident light, which incident on the filter unit with linear polarization, and the orientation of the anisotropic axes of the metallic particles 42. |
