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Related Experiment Video

Updated: Mar 26, 2026

Demonstration of a Hyperlens-integrated Microscope and Super-resolution Imaging
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Hyperbolic tangential function-based progressive addition lens design.

Gufeng Qiu, Xudong Cui

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    |February 3, 2016
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    Summary
    This summary is machine-generated.

    A new hyperbolic tangential function offers superior progressive addition lens design. This method precisely controls lens zones and offers customization for various visual needs beyond standard presbyopia correction.

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    Area of Science:

    • Optics and Photonics
    • Ophthalmic Lens Design

    Background:

    • Progressive addition lenses (PALs) require precise diopter distribution for optimal performance.
    • Current design methods using high-order polynomials and cosine functions have limitations in controlling critical lens areas.

    Purpose of the Study:

    • To introduce a novel hyperbolic tangential function for improved diopter distribution in PAL design.
    • To demonstrate the effectiveness of this function in controlling lens zones and enabling customization.

    Main Methods:

    • Development and application of a hyperbolic tangential function to model diopter distribution.
    • Simulation and fabrication of PALs using the new function.
    • Comparison of performance against existing high-order polynomial and cosine functions.

    Main Results:

    • The hyperbolic tangential function accurately describes the desired diopter distribution.
    • Simulated and fabricated lenses exhibit astigmatism close to the addition power, outperforming current methods.
    • Consistent results were achieved using both direct and indirect construction methods.

    Conclusions:

    • The hyperbolic tangential function provides superior control over critical areas like viewing zones and the lens channel.
    • This approach enables efficient customization of PALs for presbyopia, anti-fatigue, and office use.