Meerschmidt, B.B.MeerschmidtMatz, G.G.MatzFlämig, S.S.FlämigReichwald, K.K.ReichwaldPshenay-Severin, E.E.Pshenay-SeverinKamm, A.A.KammReinlein, C.C.ReinleinKopf, T.T.KopfKorn, B.B.KornKühnert, K.K.KühnertVasquez, D.D.VasquezHeilmann, M.M.HeilmannFrank, T.T.FrankSattel, T.T.SattelStröhla, T.T.StröhlaLu, X.X.LuGross, H.H.Gross2022-03-142022-03-142020https://publica.fraunhofer.de/handle/publica/40770210.1117/12.2543382A miniature endomicroscope is presented that combines a large field-of-view (up to 1.7 mm) for OCT-imaging and a high-resolution mode with 360 mm field-of-view (NA = 0.5) for multi-photon fluorescence or OCT imaging. The 4.7x magnification variation is achieved by the axial positioning of an inner micro-optical lens group using an integrated electro-magnetic z-actuator. A reverse fiber-optic piezotube-scanner with minimized length is employed for the image acquisition by resonant spiral scanning. With the probe diameter of 2.7 mm and a rigid length of about 60 mm, the approach may pave the way to clinical applications of these two modalities in a single probe. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.en620conference paper