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9 September 2022 Achromatic diffractive lens designed by binary variable slope search algorithm
Donghui Yi, Wen Qiao, Linsen Chen
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Proceedings Volume 12328, Second International Conference on Optics and Image Processing (ICOIP 2022); 1232807 (2022) https://doi.org/10.1117/12.2644192
Event: Second International Conference on Optics and Image Processing (ICOIP 2022), 2022, Taian, China
Abstract
We propose a method for designing diffractive lenses, which is called binary variable slope search (BVSS) algorithm. The diffractive lens designed by this algorithm have a fixed-position focus at several prescribed wavelengths, which we refer to as achromatic diffractive lenses (ADLs). The BVSS algorithm greatly reduces discontinuity in depth of the diffractive microstructure, thus it allows one to consider the technological limitations associated with the fabrication of the diffractive microrelief. As example, we designed an ADL, which can focus five wavelengths at a point to reduce chromatic aberration. The simulation and experimental results show that the deviation between the designed and fabricated profiles amounts to 8%. The obtained results confirm the efficiency of the proposed method in practical applications.
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Donghui Yi, Wen Qiao, and Linsen Chen "Achromatic diffractive lens designed by binary variable slope search algorithm", Proc. SPIE 12328, Second International Conference on Optics and Image Processing (ICOIP 2022), 1232807 (9 September 2022); https://doi.org/10.1117/12.2644192
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KEYWORDS
Algorithms
Point spread functions
Diffractive optical elements
Lithography
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