%0 Journal Article %T An endoscopic lens with internal focusing %A Rehn, Henning %A Forrer, Hans %A Mehne, Christian %A Betke, Alexander %A Bobic, Neven %A Schumm, Tobias %A Graf, Christian %A Klein, Kirsten %A Hein, Simon %A Miernik, Arkadiusz %J Proceedings of SPIE %V 12217 %P 122170K-122170K-6 %@ 0277-786X %D 2022-10-03 %I SPIE %~ DeepDyve