Patent ID: 6326094
Filing Date: 2001-12-04
Classification: D01D,D01F

Abstract:
A fiber structure having at least one of the characteristics of reflection and interference of visible radiation, reflection of ultraviolet radiation, and reflection of infrared radiation, the fiber structure having a cross section with X-axis and Y-axis directions, comprising:an alternate lamination arranged in the cross section, said alternate lamination including a predetermined number of:a first portion having a refractive index na and a thickness da; anda second portion adjacent to said first portion, said second portion having a refractive index nb and a thickness db,wherein when said refractive index na is given by 1.3.ltoreq.na, and a ratio nb/na is given by 1.01.ltoreq.nb/na.ltoreq.1.20, a reflection peak wavelength .lambda. is equal to 2(nada+nbdb), and wherein a difference in forming temperature between said first and second portions is 50.degree. C. or less.