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Updated: Jun 7, 2026

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics
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Concentrators for focal-plane arrays.

H J Caulfield, N Kukhtarev, T Kukhtareva

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    Summary
    This summary is machine-generated.

    Photorefractive crystals enable the creation of optically parallel concentrator arrays, overcoming the field-of-view limitations of traditional lenslet arrays for focal-plane detectors.

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Focal-plane arrays often require lenslet arrays to focus light onto detectors.
    • Existing lenslet arrays face challenges with field-of-view and physical space requirements.

    Purpose of the Study:

    • To demonstrate a novel method for manufacturing optical concentrators using photorefractive crystals.
    • To overcome the limitations of conventional lenslet arrays in focal-plane applications.

    Main Methods:

    • Utilizing photorefractive crystals to fabricate optically parallel arrays.
    • Developing a manufacturing process for controllable concentrator size and field of view.

    Main Results:

    • Successfully manufactured arrays of optical concentrators with adjustable size and field of view.
    • Demonstrated an alternative to traditional lenslet arrays for light concentration.

    Conclusions:

    • Photorefractive crystals offer a viable and advantageous alternative for creating optical concentrators.
    • This technology addresses key limitations in focal-plane array design, particularly field-of-view issues.