| abstract |
(57) [Problem] To provide an excellent luminous fiber that maintains the whiteness required for the fiber in the daytime or under illumination and emits light with high brightness in the dark. SOLUTION: A luminous fiber comprising 1 to 15% by weight of a luminous substance obtained by doping strontium aluminate with a rare earth element and 0.01 to 1% by weight of a fluorescent whitening agent. |