Multiplexed coded illumination for Fourier Ptychography with an LED array microscope

Fourier Ptychography is a new computational microscopy technique that achieves gigapixel images with both wide field of view and high resolution in both phase and amplitude. The hardware setup involves a simple replacement of the microscope's illumination unit with a programmable LED array, allowing one to flexibly pattern illumination angles without any moving parts. In previous work, a series of low-resolution images was taken by sequentially turning on each single LED in the array, and the data were then combined to recover a bandwidth much higher than the one allowed by the original imaging system. Here, we demonstrate a multiplexed illumination strategy in which multiple randomly selected LEDs are turned…

• US
  United States Agency for International Development

  Awards: AID-OAA-A-13-00002, AID-OAA-A-12-00011, 13-00002
• OO
  Office of Naval Research

  Awards: N00014-14-1-0083, N00014