Patent ID: 8975508
Filing Date: 2015-03-10
Classification: F24S,G02B,H01L,Y02E

Abstract:
1. A solar concentrator for photovoltaic systems having a plane of symmetry, one main extension along a longitudinal axis belonging to the plane of symmetry and a cross-section at right angles to the longitudinal axis substantially equal for a continuum of right-angled cross-sections along at least a portion of a longitudinal extension of the concentrator, a cross-section of the plane of symmetry forming an axis of symmetry of the right-angled cross section, the solar concentrator comprising a main reflective system and a secondary refractive system both extending longitudinally and having a respective profile on the right-angled cross-section, the main reflective system forming at its two opposite ends along the axis of symmetry respectively an optical inlet and an optical outlet and comprising two semi-portions positioned specularly relative to the plane of symmetry, wherein a cross-section profile of the secondary refractive system is a triangle having a base at a cross-section of the optical outlet and apex on the axis of symmetry between the optical inlet and outlet, wherein a cross-section profile of each semi-portion of the main reflective system extends from a point near a respective vertex to the base of the triangle up to an end point on the optical inlet and comprises a segment substantially in the shape of a parabola having an axis forming with the axis of symmetry an acceptance angle greater than zero and a focus on the axis of symmetry, and wherein the focus falls inside the triangle.