Solar collector retaining high incident solar radiation temperature

摘要

The solar collector has at least two collector components (1,2) with different refractive indices, the component (2) with the lesser refractive index enclosing the component (1) with the higher refractive index, for preventing exit of the incident light by total internal reflection. The trapped solar radiation is fed to a load (5) via an optical conductor coupled to the component with the higher refractive index via an optical coupler with a reduced cross- section.