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Lett."],"published-print":{"date-parts":[[2026,2,15]]},"abstract":"<jats:p>Fourier ptychography microscopy (FPM) is a powerful computational imaging technique; however, its performance is limited by the stringent matched-illumination requirement, especially when using high-numerical-aperture (NA) objective lenses. To address this challenge, we propose a phase-contrast modulation-based FPM (PCM-FPM). By introducing a 0.5\u03c0 phase shift to the non-scattered components of object waves generated under unmatched illuminations from six LEDs, PCM-FPM encodes otherwise undetectable low-frequency phase information into measurable intensity variations. Then, a novel iterative reconstruction algorithm, to our knowledge, processes these six phase-contrast intensity images to recover full-spectrum phase details. 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All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}