Title :
Tunable multi-micro-lens system for high lateral resolution endoscopic optical coherence tomography
Author :
Aljasem, Khaled ; Seifert, Andreas ; Zappe, Hans
Author_Institution :
Dept. of Microsyst. Eng. - IMTEK, Univ. of Freiburg, Freiburg
Abstract :
A pneumatically actuated tunable liquid micro-lens is developed for integration in an endoscopic optical coherence tomography (OCT) system allowing dynamic focusing along the scan depth. An evaluation of the optical performance, particularly transverse resolution, is presented and its utility in OCT discussed. A transverse resolution of about 15 mum which does not vary with a scan depth of 9 mm scan depth has been obtained, performance which cannot be obtained with a fixed focal length lens.
Keywords :
bioMEMS; biomedical optical imaging; endoscopes; image resolution; membranes; microlenses; optical design techniques; optical focusing; optical tomography; optical tuning; polymer films; OCT-probe design; biological imaging; biomedical optics; dynamic focusing; fixed focal length lens; high lateral resolution endoscopic OCT system; optical coherence tomography; scan depth; transverse resolution; tunable multimicrolens system; Apertures; Biomembranes; High-resolution imaging; Image resolution; Integrated optics; Lenses; Optical imaging; Optical microscopy; Surface fitting; Tomography; Endoscopic optical coherence tomography; micro-lens; optical optimization; polydimethylsiloxane (PDMS);
Conference_Titel :
Optical MEMs and Nanophotonics, 2008 IEEE/LEOS Internationall Conference on
Conference_Location :
Freiburg
Print_ISBN :
978-1-4244-1917-3
Electronic_ISBN :
978-1-4244-1918-0
DOI :
10.1109/OMEMS.2008.4607820
