Polarizer and manufacturing method thereof

Details Polarizer and manufacturing method thereof Polarizer and manufacturing method thereof

2011-03-29

2011-03-29

Fineman, Lee (Department: 2872)

Optical: systems and elements

Polarization without modulation

Polarization variation over surface of the medium

C359S576000

Reexamination Certificate

active

07916389

ABSTRACT:
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.

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