A bimodal endoscopic imager in a glass package

作者：Kretschmer Simon; Jaeger Jan; Vilches Sergio; Ataman Caglar^*; Zappe Hans

来源：Journal of Micromechanics and Microengineering, 2018, 28(10): 105009.

DOI：10.1088/1361-6439/aaceb5

• endoscopy
• 3D glass micro structuring
• micro optics
• optical coherence tomography
• multi modal imaging

We present the first endoscopic imaging probe that combines full-field white light video microscopy and 3D optical coherence tomography (OCT) in a single miniaturized instrument. Designed as an instrument for the working channels of conventional endoscopes, the presented system has dimensions of 15 x 2.4 x 3.3 mm(3) (l x w x h) and is an important step towards practical multi-modal optical biopsy systems for clinical use.The video modality has a sensor-limited resolution and a total field of view of 10 pm and 1.17 mm in diameter, respectively. The OCT modality works in a scanned imaging arrangement and provides 3D optical tomograms with a lateral resolution of 43.5 mu m. An integrated tubular piezoelectric fiber scanner is used to perform en face scanning necessary for the 3D OCT measurements. The entire system is assembled and encapsulated within a glass package fabricated via 3D laser microstructuring, a technology which addresses the major issues of micro-optic assembly precision and biocompatibility.

• 出版日期2018-10