Patent ID: 9728665
Date: 2017-08-08
CPC Classifications: G01J,G02B,H01L,Y02E

Claim:
1. A luminescent concentrator for solar light comprising, a wavelength-selective filter; a reflective surface at the bottom of the concentrator; a luminescent material deposited or sputtered on the reflective surface; an energy concentrating area between the wavelength-selective filter and the luminescent material, wherein the wavelength-selective filter is adapted to pass the solar light and to reflect light emitted by the luminescent material, wherein the energy concentrating area consists of reflective spacer balls and either an air gap or vacuum, wherein the luminescent concentrator further directs light to a photovoltaic device; and wherein the reflective spacer balls are coated with a reflective material and adapted to mechanically reinforce the filter and/or the luminescent material.