Needle sized lensless holographic endoscope

Thin and flexible endoscopes for minimally invasive medical diagnostics and therapy only allow for 2D imaging so far while 3D endoscopes exceed the required diameters for minimally invasive applications. Aim of the project “HoloScope” is the realization of endoscopes with diameters down to 300 µm, which allows for 3D imaging with cellular resolution.  

In cooperation with Hannover Institute of Technology (HITec) of Leibniz-University Hannover and BIOLAS of TU Dresden aperiodic fiber bundles will be realized and employed together with novel signal processing and control methods to realize lensless holographic endoscopes for instance for in-vivo brain imaging.

The project is supported by 12 companies, including 8 MSEs, as well as 2 clinics.

Staff: E. Scharf, R. Kuschmierz

Period: 04/21-09/23

R Kuschmierz, E Scharf, N Koukourakis, JW Czarske, Self-calibration of lensless holographic endoscope using programmable guide stars, Optics letters 43 (12), 2997-3000

E Scharf, J Dremel, R Kuschmierz, J Czarske, Video-rate lensless endoscope with self-calibration using wavefront shaping, Optics Letters 45 (13), 3629-3632