Hybrid lighting-CPV, a new efficient concept combining illumination with CPV

A combination of CPV module with lighting guides is presented as Hybrid Lighting-CPV. A significant improvement in total efficiency can be achieved by this new approach in terms of electricity and luminous flux obtained, without modifying or increasing considerably the cost of a classical CPV. In order to characterize the lighting subpart some experiments are carried out. It is determined the optical fiber transmission as function of optical fiber length, diameter and material properties and f-number of the lens. An increase on f-number reduces the reflections inside the fiber and so the transmission increases. Additionally are checked the characteristics of fibers as light lamps what it confirms the need of a diffuser. Measurements shows that the light provided by optical fibers is at least as good as typical fluorescent lamps in terms of color correlated temperature and color rendering index.