| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve a conventional problem in a structural color filter that utilizes light interference or diffraction by a thin film or a grid structure with thickness or dimension of light wavelength or the like, the problem being what is called large incident angle dependency (visual field angle dependency) that is a change in color characteristics depending on an incident angle or an observation direction of incident light.SOLUTION: A structural color filter has: a diffraction grating pattern formed by a polymeric resin on a substrate; and a metal thin film existing in all gaps in the diffraction grating pattern. A material of the metal thin film is preferably Al or Ag, and TE polarization is used as incident light.</p> |
