7 September 2017 Optimization design of nonimaging Fresnel lens using total internal reflection prisms for sunlight concentration
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Abstract
The efficiency in Fresnel lenses is affected by three principal sources: energy loss by absorption, chromatic dispersion and reflectance losses at refracting surfaces. On this subject, the design of nonimaging Fresnel lenses integrated by refractive and total internal reflection prisms is presented. This design method uses iterative calculations for design every prism and it selects the best option for avoid reflectance losses. A design and characterization of a Fresnel lens that takes chromatic aberration into account is shown, including a comparison with a nonimaging Fresnel lens composed only by refraction prisms is performed and with other integrated by only total internal reflection prisms. In addition, the study about how acceptance angle and the number of prisms affects the final transmittance of the lens is included.
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Perla M. Viera-González, Perla M. Viera-González, Guillermo E. Sánchez-Guerrero, Guillermo E. Sánchez-Guerrero, Edgar Martínez-Guerra, Edgar Martínez-Guerra, Daniel E. Ceballos-Herrera, Daniel E. Ceballos-Herrera, } "Optimization design of nonimaging Fresnel lens using total internal reflection prisms for sunlight concentration", Proc. SPIE 10379, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XIV, 103790R (7 September 2017); doi: 10.1117/12.2273095; https://doi.org/10.1117/12.2273095
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