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Proceedings Paper

A laser-scanning endoscope based on polysilicon micromachined mirrors with enhanced attributes
Author(s): Markus George; Hansjoerg Albrecht; Marc O. Schurr; Panagiotis G. Papageorgas; Ulrich Hofmann; Dimitris Maroulis; Christian D. Depeursinge; Dimitris Iakkovidis; Nikiforos Theofanous; Arianna Menciassi
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Paper Abstract

A miniaturized laser scanning endoscope is presented which makes use of three lasers to illuminate a sample with a red, a green and a blue wavelength simultaneously. Scattered light from the sample is descanned and chromatically separated into the three channels for detection and postprocessing to compose a color image. The scanning subsystem consists of two micro-electro-mechanical mirrors suitable for mass production. The endoscope head can be assembled fast and at low cost. A resolution of the order of 16 lines per mm is achieved for a working distance common in endoscopy. Considerations of the system design include the operation of the mico mirrors, the filtering of reflected light by using polarization effects and a strategy to cope with color metamery. An expert system based on a neural network was found able to analyze endoscopic images to identify suspicious lesions.

Paper Details

Date Published: 14 October 2003
PDF: 12 pages
Proc. SPIE 5143, Novel Optical Instrumentation for Biomedical Applications, (14 October 2003); doi: 10.1117/12.500541
Show Author Affiliations
Markus George, Univ. of Tuebingen (Germany)
Hansjoerg Albrecht, Laser- und Medizin-Technologie GmbH (Germany)
Marc O. Schurr, Univ. of Tuebingen (Germany)
Panagiotis G. Papageorgas, Univ. of Athens (Greece)
Ulrich Hofmann, Fraunhofer-Institut fuer Siliziumtechnologie (Germany)
Dimitris Maroulis, Univ. of Athens (Greece)
Christian D. Depeursinge, EEcole Polytechnique Federale de Lausanne (Switzerland)
Dimitris Iakkovidis, Univ. of Athens (Greece)
Nikiforos Theofanous, Univ. of Athens (Greece)
Arianna Menciassi, Scuola Superiore Sant'Anna (Italy)

Published in SPIE Proceedings Vol. 5143:
Novel Optical Instrumentation for Biomedical Applications
Albert-Claude Boccara, Editor(s)

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