A laser-scanning endoscope based on polysilicon micromachined mirrors with enhanced attributes

Markus George; Hansjoerg Albrecht; Marc O. Schurr; Panagiotis G. Papageorgas; Ulrich Hofmann; Dimitris Maroulis; Christian D. Depeursinge; Dimitris Iakkovidis; Nikiforos Theofanous; Arianna Menciassi

doi:10.1117/12.500541

14 October 2003 A laser-scanning endoscope based on polysilicon micromachined mirrors with enhanced attributes

Markus George, Hansjoerg Albrecht, Marc O. Schurr, Panagiotis G. Papageorgas, Ulrich Hofmann, Dimitris Maroulis, Christian D. Depeursinge, Dimitris Iakkovidis, Nikiforos Theofanous, Arianna Menciassi

Author Affiliations +

Proceedings Volume 5143, Novel Optical Instrumentation for Biomedical Applications; (2003) https://doi.org/10.1117/12.500541
Event: European Conferences on Biomedical Optics 2003, 2003, Munich, Germany

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.

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Markus George, Hansjoerg Albrecht, Marc O. Schurr, Panagiotis G. Papageorgas, Ulrich Hofmann, Dimitris Maroulis, Christian D. Depeursinge, Dimitris Iakkovidis, Nikiforos Theofanous, and Arianna Menciassi "A laser-scanning endoscope based on polysilicon micromachined mirrors with enhanced attributes", Proc. SPIE 5143, Novel Optical Instrumentation for Biomedical Applications, (14 October 2003); https://doi.org/10.1117/12.500541

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