Fresnel lens solar concentrator design based on geometric optics and blackbody radiation equation

Michael D. Watson; Robert R. Jayroe Jr.

doi:10.1117/12.368239

6 October 1999 Fresnel lens solar concentrator design based on geometric optics and blackbody radiation equation

Michael D. Watson, Robert R. Jayroe Jr.

Proceedings Volume 3781, Nonimaging Optics: Maximum Efficiency Light Transfer V; (1999) https://doi.org/10.1117/12.368239
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

Fresnel lenses have been used for years as solar concentrators in a variety of applications. Several variables effect the final design of these lenses including: lens diameter, image spot distance from the lens, and bandwidth focused in the image spot. Defining the image spot as the geometrical optics circle of least confusion, a set of design equations has been derived to define the groove angles for each groove on the lens. These equations allow the distribution of light by wavelength within the image spot to be calculated. Combining these equations with the blackbody radiation equations power, power distribution, and flux within the image spot can be calculated. In addition, equations have been derived to design a lens to produce maximum flux in a given spot size. Using these equations, a lens may be designed to optimize the spot energy concentration for given energy source.

Citation Download Citation

Michael D. Watson and Robert R. Jayroe Jr. "Fresnel lens solar concentrator design based on geometric optics and blackbody radiation equation", Proc. SPIE 3781, Nonimaging Optics: Maximum Efficiency Light Transfer V, (6 October 1999); https://doi.org/10.1117/12.368239

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