Forward imaging OCT endoscopic catheter based on MEMS lens scanning

Hyeon Cheol Park; Cheol Song; Minseok Kang; Yong Jeong; Ki Hun Jeong

doi:10.1364/OL.37.002673

Forward imaging OCT endoscopic catheter based on MEMS lens scanning

Hyeon Cheol Park, Cheol Song, Minseok Kang, Yong Jeong, Ki Hun Jeong

Department of Robotics and Mechatronics Engineering

Korea Advanced Institute of Science and Technology

Research output: Contribution to journal › Article › peer-review

58 Scopus citations

Abstract

This Letter reports a fully packaged microelectromechanical system (MEMS) endoscopic catheter for forward imaging optical coherence tomography (OCT). Two-dimensional optical scanning of Lissajous patterns was realized by the orthogonal movement of two commercial aspherical glass lenses laterally mounted on two resonating electrostatic MEMS microstages at low operating voltages. The MEMS lens scanner was integrated on a printed circuit board and packaged with an aluminum housing, a gradient index fiber collimator, and an objective lens. A homebuilt spectral-domain OCT system with 60 kHz A-line acquisition rate was combined with the endoscopic MEMS catheter. Three-dimensional images of 256 × 256 × 995 voxels were directly reconstructed by mapping the A-line datasets along the Lissajous patterns. The endoscopic catheter can provide a new direction for forward endoscopic OCT imaging.

Original language	English
Pages (from-to)	2673-2675
Number of pages	3
Journal	Optics Letters
Volume	37
Issue number	13
DOIs	https://doi.org/10.1364/OL.37.002673
State	Published - 1 Jul 2012

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10.1364/OL.37.002673

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abstract = "This Letter reports a fully packaged microelectromechanical system (MEMS) endoscopic catheter for forward imaging optical coherence tomography (OCT). Two-dimensional optical scanning of Lissajous patterns was realized by the orthogonal movement of two commercial aspherical glass lenses laterally mounted on two resonating electrostatic MEMS microstages at low operating voltages. The MEMS lens scanner was integrated on a printed circuit board and packaged with an aluminum housing, a gradient index fiber collimator, and an objective lens. A homebuilt spectral-domain OCT system with 60 kHz A-line acquisition rate was combined with the endoscopic MEMS catheter. Three-dimensional images of 256 × 256 × 995 voxels were directly reconstructed by mapping the A-line datasets along the Lissajous patterns. The endoscopic catheter can provide a new direction for forward endoscopic OCT imaging.",

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Forward imaging OCT endoscopic catheter based on MEMS lens scanning

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