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Structure and characterization of an enhanced laser-scanning endoscope based on microelectromechanical mirrors

[+] Author Affiliations
Hansjörg Albrecht

Laser- und Medizin-Technologie GmbH, Fabeckstr. 60-62, D-14195 Berlin, Germany

Panagiotis G. Papageorgas

University of Athens, Department of Informatics and Telecommunicaitons, Panepistimiopolis, Ilissia, 15784 Athens, Greece

Dimitris Maroulis

University of Athens, Department of Informatics and Telecommunicaitons, Panepistimiopolis, Ilissia, 15784 Athens, Greece

Nikiforos Theofanous

University of Athens, Department of Informatics and Telecommunicaitons, Panepistimiopolis, Ilissia, 15784 Athens, Greece

Stavros Karkanis

University of Athens, Department of Informatics and Telecommunicaitons, Panepistimiopolis, Ilissia, 15784 Athens, Greece

Bernd Wagner

Fraunhofer Institute for Silicon Technology, Fraunhoferstraße 1, 25524 Itzehoe, Germany

Marc Schurr

University of Tubingen, Waldhornlestraße 22, 72072 Tubingen, Germany

Christian Depeursinge

Swiss Federal Institute of Technology (EPFL), Institute of Applied Optics, CH-Ecublens, CH-1015 Lausanne, Switzerland

Arianna Menciassi

Scuola Superiore Sant’ Anna, ARTS & MiTech Lab. via Carducci 40, 56127 Pisa, Italy

J. Electron. Imaging. 15(2), 023003 (May 09, 2006). doi:10.1117/1.2194890
History: Received April 06, 2005; Revised October 19, 2005; Accepted December 15, 2005; Published May 09, 2006
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A miniaturized laser-scanning endoscope is presented that makes use of a composite laser beam for color imaging. A novel approach is followed in the device, which is based on scanning the target tissue with the laser beam using two miniaturized MEMS (microelectromechanical systems) micromirrors and employs specific collection, detection, and postprocessing of the scattered light for reconstructing a color image of the tissue. A resolution of the order of 16linepairsmm is achieved for a working distance of 50mm while the focal depth is larger than 5mm. Key considerations of the system design are presented, along with results on the operation of the micromirrors, an analysis of the optical design of the endoscope head, and remarks on the assessment of image quality.

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© 2006 SPIE and IS&T

Citation

Hansjörg Albrecht ; Panagiotis G. Papageorgas ; Dimitris Maroulis ; Nikiforos Theofanous ; Stavros Karkanis, et al.
"Structure and characterization of an enhanced laser-scanning endoscope based on microelectromechanical mirrors", J. Electron. Imaging. 15(2), 023003 (May 09, 2006). ; http://dx.doi.org/10.1117/1.2194890


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