| 摘要 |
The HCPV industry has converged on the use of relatively inexpensive Fresnel refractive optics to concentrate sunlight to 500-1000 suns or more. One fundamental disadvantage of using Fresnel optics is their susceptibility to chromatic aberration. With a Fresnel lens, this chromatic aberration increases as a function of distance away from the optical axis of a lens—that is, greater chromatic aberration is seen as one moves along a radius away from the center of a Fresnel lens. Embodiments herein disclose TIR-mediated optics which can be used alone or with Fresnel-mediated optics to concentrate solar energy. The system and method described herein utilize novel TIR and Fresnel concentrator designs to enable lower F-number optical systems, resulting in smaller systems with higher concentrations of solar energy than is currently attainable with Fresnel lenses alone (or with secondary optics) while simultaneously minimizing chromatic aberration. |
