If you find this project useful in your research, please consider citing our paper:

Kyung Chul Lee, Kyungwon Lee, Jaewoo Jung, Se Hee Lee, Donghyun Kim, and Seung Ah Lee, ACS Photonics 2021 8 (5), 1307-1315 DOI: 10.1021/acsphotonics.1c00350

We propose a smartphone-mountable computational microscope that achieves wide-field and high-resolution imaging, based on the Fourier ptychographic (FP) microscopy technique. Our device uses the smartphone’s built-in camera for microscopy imaging, the display screen for programmable illumination, and the computational power of the smartphone processors for FP image reconstruction. With a compact and lightweight optics module and a custom-built application, we can transform a regular smartphone into a high-performance microscope device with a space-bandwidth product exceeding that of regular benchtop microscopes. Our device achieves a half-pitch resolution of 870 nm over a wide field-of-view of 2.1 × 1.6 mm2 with amplitude, phase, and color imaging capabilities. We report on the design of the illumination and imaging system, our methods for fast FP reconstruction on the smartphone microscope, and the performance of the device. Using various clinical samples, we also discuss the potential of our device for clinical applications in resource-limited settings.

1. Install Android Studio
2. Import software folder
3. Connect phone
4. Build and run

• Android SDK(min API = 26)
• Camera2 API
• RxJava API
• OpenCV API

• Google Drive

This application requires the following permissions:

• Camera capture and record.
• Read and write access to external storage.

In case of any queries, please reach out to Kyung Chul Lee or Jaewoo Jung