High-Resolution Ex-Vivo Imaging of Retina with a Laptop-Based Portable Endoscope

Figure 2

Structure of the portable endoscope. (a) Prototype overall view of the portable endoscope, with a stainless steel tube (8 centimeters in length, 19 gauge in diameter), a handle, and a USB interface. (b) Structural schematic diagram of the portable endoscope. A camera module and illumination fibers lie inside the steel tube. The illumination source is supplied from the built-in LEDs through plastic optical fibers. The camera module equipped in the handle can compose, capture, and transmit images. The images were transmitted to the PC through a fiberoptic image guide. USB: Universal Serial Bus, LED: universal serial bus.

(a)

(b)