Solar Reflective Fibre

Abstract

A solar reflective fibre having a longitudinal axis, the fibre comprising: a substantially continuous primary portion having a first refractive index; and a plurality of secondary portions, each secondary portion having a second refractive index different from the first refractive index. The primary and secondary portions are arranged to run substantially continuously along at least a portion of a length of the fibre, the primary portion providing a host medium within which the secondary portions are provided. The primary and secondary portions are arranged to constitute a dielectric mirror structure whereby a phase of a plurality of scattered beams of radiation each beam being scattered at one of a plurality of respective interfaces between primary and secondary portions interfere constructively with one another thereby to reduce an amount of radiation transmitted through the fibre.

Dependencies are inferred from the claim text.