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首页> 外文会议>Nonimaging optics: efficient design for illumination and solar concentration XIV >Optimization design of nonimaging Fresnel lens using total internal reflection prisms for sunlight concentration
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Optimization design of nonimaging Fresnel lens using total internal reflection prisms for sunlight concentration

机译：使用全内反射棱镜的非成像菲涅耳透镜的优化设计

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摘要

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.
机译：菲涅耳透镜的效率受三个主要来源的影响：吸收引起的能量损失，色散和折射表面的反射率损失。在这个主题上，提出了由折射和全内反射棱镜集成的非成像菲涅耳透镜的设计。该设计方法使用迭代计算来设计每个棱镜，并选择最佳选项以避免反射损失。示出了考虑了色差的菲涅耳透镜的设计和表征，包括与仅由折射棱镜构成的非成像菲涅耳透镜进行比较，而与仅由全内反射棱镜进行积分的菲涅耳透镜进行比较。此外，还包括有关接受角和棱镜数量如何影响透镜最终透射率的研究。

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