Low cost full field optical coherence tomography device using a DVD optical head and smartphone camera.

In this article, we introduce a low cost full-field optical coherence tomography (FF-OCT) system that combines DVD optical lenses with smartphones technology to create a portable imaging device. The DVD lenses, extracted from optical pickup units(OPU), are mounted on a voice coil actuator, which enables high-speed and precise displacement. They also feature a built-in stabilization mechanism and a control circuit that minimizes external disturbances such as vibrational noise, ensuring consistent imaging performance. By integrating these compact lenses, we developed a lightweight and cost-effective FF-OCT device with automatic alignment capabilities, making it ideal for point-of-care diagnostics. The main structure of the device is 3D-printed, while a smartphone handles data acquisition, processing, and display, further enhancing affordability and accessibility. To assess imaging performance, we evaluated lateral resolution using a CD disk grating with a 1.6 [Formula: see text] periodicity. The lateral resolution of the system was estimated to be approximately 0.94 [Formula: see text]. Additionally, we captured en-face images of tissue and onion layers as a proof of concept, demonstrating the device's potential for biological imaging.