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15 February 2022 Surface design for refractive multifocal optics
Siyu Liu, Ting Wan, Chaohui Zhou, Xiaoli Hu, Yiyu Li
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Proceedings Volume 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021); 121660C (2022) https://doi.org/10.1117/12.2604999
Event: Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 2021, Hong Kong, Hong Kong
Abstract
According to the principle of differential geometry, the surface power distribution of a continuous surface can be solved analytically. However, the reverse engineering from surface power distribution to surface geometry relies on numerical optimization methods. This paper proposes an efficient and high-precision surface construction method for rotationally symmetric multifocal optics design. Based on the requirements for the surface power distribution in the radial direction, this method calculates the relative offset of the curvature center coordinate along the x-axis direction for each point on the cross-section curve, then calculates the first-order derivative and the second-order derivative of the cross-section curve and the corresponding curvature radius and surface power. The deviation of the designed surface power from the target power is used as a measure of the accuracy of the multifocus optics design. This method is suitable for any rotationally symmetrical multifocal distribution pattern, including Gaussian multifocal distribution and step multifocal distribution, and has the potential to extend to the free-form multifocal surface design.
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Siyu Liu, Ting Wan, Chaohui Zhou, Xiaoli Hu, and Yiyu Li "Surface design for refractive multifocal optics", Proc. SPIE 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 121660C (15 February 2022); https://doi.org/10.1117/12.2604999
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KEYWORDS
Optical design
Refractive index
Optical spheres
Eyeglasses
Freeform optics
Ophthalmology
Reverse engineering
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