Solar electrical power generation:

Solar energy is collected by focusing collector panels and transmitted to an absorber where it is transformed into electrical energy.

Concentrating Collectors

Geometry   For concentrating collectors, the characteristics of the parabola are used in that all incident rays are reflected to the same (focal point). The incoming sun rays are reflected by the parabolic curved mirror surface of the collectors and concentrated in one point --> very high sun concentration (C) at the focal point (150-200X).
Concentration C = aperture area/sun dia at focal point	Figure 1: Geometry of Parabola

The Barksdale Collectors are in fact flat plane devices which photonically replicate the physical chararcteristics of a parabolic mirror or lens. Major advantage is spectral splitting to recover UV light to be focused on the PV cell absorber with the remaining wavelenths used for other utilities.  The collectors are easy and inexpensive to manufacture, far less expensive than polished mirrors or lens. Patent pending.

Typical Collector Panel Design Specifications