| 摘要 |
A polarizer includes including a translucent substrate a diffraction grating which is formed on the translucent substrate and which has a plurality of convex portions that are aligned so as to have a frequency which is equal to or less than a wavelength of light to be used, and in which each of the plurality of convex portions includes an alternating layer formed of high-refractive-index layers and low-refractive-index layers, and an intermediate-refractive-index region which is formed at a position between the convex portions that are adjacent to each other in the diffraction grating, so as to have a portion buried in the translucent substrate and which has a refractive index which is higher than a refractive index of the low-refractive-index layer and which is lower than a refractive index of the high-refractive-index layer.
|
