Patent ID: 8649093
Filing Date: 2014-02-11
Classification: D01D,D01F,G02B

Abstract:
1. A polarizing fiber having an absorption axis in a longitudinal direction thereof; wherein a cross sectional form perpendicular to the longitudinal direction has a sea-island structure, the cross sectional form being made up in the longitudinal direction; a resin that constitutes a sea region of the sea-island structure comprises a dichroic dye; a resin that constitutes island regions of the sea-island structure is a transparent resin; the number of the island regions is 2 or more; and a long diameter of each of the island regions is from 0.1 to 8.0 μm, and wherein when the refractive index of the resin that constitutes the island regions in a direction perpendicular to the longitudinal direction is represented by n when the refractive index of the resin that constitutes the island regions in the longitudinal direction is represented by n