| 主权项 |
1. An optical filter, comprising:
a substrate layer, of which an elastic modulus in a first in-plane direction is different from an elastic modulus in a second in-plane direction which is perpendicular to the first in-plane direction, the elastic modulus in the first in-plane direction is lower than that in the second in-plane direction, the elastic modulus in the first in-plane direction is in the range from 1,500 MPa to 4,000 MPa at 25° C., and the elastic modulus in the second in-plane direction is in the range from 2,000 MPa to 5,000 MPa at 25° C.; and a polarization control layer that comprises first and second regions configured to divide incident light into two kinds of lights having different polarized states from each other, the first and second regions having stripe shapes extending in a common direction and being disposed adjacently and alternately to each other, the common direction being parallel to one direction among the first and second in-plane directions, in which the elastic modulus is relatively lower. |
