Paper 14085-45
Paper 14085-45
Advanced RGB laser illumination system for endoscopy
On demand | Presented live 15 April 2026 
Abstract
A prototype system for illuminating clinical endoscope field of view simultaneously by three RGB laser lines at the wavelengths 450nm, 520nm and 638nm has been updated, aiming at applications with all kinds of flexible fibro-endoscopes comprising a free working channel. The illuminating laser light is delivered via a specially designed optical fiber of appropriate diameter, with output aperture angle ~25 degrees. The system also includes a unit for reducing laser speckle artefacts in endoscopy images and a color sensor for controlling intensity ratios of RGB laser emission lines at the distal end of endoscope. Laboratory tests of the system have confirmed its suitability for clinical implementation.
Presenter
Univ of Latvia (Latvia)
Professor, SPIE Fellow Janis Spigulis is founder (1997) and head of the Biophotonics Laboratory at Institute of Atomic Physics and Spectroscopy, University of Latvia (Riga). With background in atomic spectroscopy, optoelectronics and fiber optics, he contributes to development of novel optical methods and devices for non-invasive diagnostics and monitoring of human health condition, mainly focusing on in-vivo human skin. Spectral, temporal and imaging features of emitted and remitted optical signals are used for quantitative assessment of skin malformations, skin blood micro-circulation and overall cardio-vascular state of a person. The developed methods and concepts are implemented in lab-made prototype devices that pass preliminary clinical validation. Author/co-author of > 200 published papers and 27 patent applications, H = 23 (SCOPUS). More details: http://home.lu.lv/~spigulis/.
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