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    • 7. 发明公开
    • CONCENTRATING PHOTOVOLTAIC SYSTEM USING A FRESNEL LENS AND NONIMAGING SECONDARY OPTICS
    • 照相机KONZENTRATIONSSYSTEM MIT EINER FRESNEL-LINSE UND NICHTABBILDENDERSEKUNDÄROPTIK
    • EP2122820A4
    • 2016-08-03
    • EP08730652
    • 2008-02-25
    • UNIV CALIFORNIA
    • WINSTON ROLANDRITSCHEL ALEXANDER
    • H01L31/054F24S23/70
    • G02B19/0033F24J2/085F24J2/1047G02B3/08G02B19/0028G02B19/0042H01L31/0543H01L31/0547Y02E10/52
    • Optical devices and systems that provide high solar flux onto a multi-junction solar cell, or other target cell, to produce efficient electrical output. An optical device includes a primary focusing element, and a non-imaging secondary concentrator having an entry aperture and an exit aperture. The primary focus element is configured to focus light from a distant source onto the entry aperture of the secondary concentrator. The primary focusing element has an f-number that is greater than about 1, e.g., between 1 and 4 or greater. The device includes a solar cell located proximal to the exit aperture of the secondary concentrator. In certain aspects, the primary focusing element includes a Fresnel lens, a diffractive lens and/or a reflector. In certain aspects, a Fresnel lens used as the primary is flat, substantially square, curved and/or refractive.
    • 在多结太阳能电池或其他目标电池上提供高太阳能通量以产生高效电输出的光学器件和系统。 光学装置包括主聚焦元件和具有入口孔和出口孔的非成像二次聚光器。 主要焦点元件被配置为将来自远距离源的光聚焦到次级聚光器的入射孔。 主聚焦元件具有大于约1,例如1至4或更大的f数。 该装置包括位于二次集中器的出口孔附近的太阳能电池。 在某些方面,主要聚焦元件包括菲涅尔透镜,衍射透镜和/或反射器。 在某些方面,用作主要的菲涅耳透镜是平坦的,基本上是正方形的,弯曲的和/或折射的。