Lensfree Phase Target Dataset (USAF / Phase Resolution Target)

This dataset contains raw lensfree on-chip measurements of a phase resolution target (USAF or equivalent) acquired using a maskless and on-chip LED-array microscope with spatially-varying illumination angle calibration. The dataset includes the raw intensity measurements (.mat), system parameters, and the MATLAB and Python code used to perform coherent phase reconstruction and illumination-angle estimation. These data support resolution analysis, contrast transfer verification, and phase retrieval benchmarking for the lensfree microscopy system described in our manuscript.