Lensless Endoscope Produces 3D Images of Ultrasmall Objects
DRESDEN, Germany, Aug. 16, 2019 — Researchers at Dresden University of Technology (TU Dresden) have developed a tiny, self-calibrating endoscope that produces 3D images of objects smaller than a single cell. Without a lens or any optical, electrical, or mechanical components, the tip of the endoscope measures just 200 μm across. To build a self-calibrating endoscope, the researchers added a 150-μm thick glass plate to the tip of a coherent fiber bundle (a type of optical fiber that is commonly found in endoscopy