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Proceedings Paper

Optoelectronic set for measuring the absorption spectrum of the thin biological media
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Paper Abstract

In the paper the authors present the developed optoelectronic system for controlled, repetitive exposure by electromagnetic radiation of biological structures in the Low Level Laser (LED) Therapy procedures. The set allows for objective selection and control of the irradiation parameters by light from spectral range of the tissues transmission window. Measurements of optical parameters of thin biological medium – spectral absorption coefficient and the amount of absorbed energy – can be implemented in the measuring chamber during irradiation treatment. The radiation source is the broadband illuminator consists of set of selected high power LEDs. The maximum optical power of single source is from 80 mW to 800 mW. Illuminator is controlled and powered by the multi-channel prototype control system, which allows independently control a current of each emitter. This control allows shaping spectral emission characteristic of broadband source in range 600-1000 nm. Illuminator allows providing in the working area of 700 cm2 a uniform distribution of optical power density, of 10 mW/cm2 for maximum. Set ensure uniform distribution of the spectral power density of up to 40 mW/nm.

Paper Details

Date Published: 25 October 2013
PDF: 10 pages
Proc. SPIE 8903, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013, 89031C (25 October 2013); doi: 10.1117/12.2035433
Show Author Affiliations
Lukasz Gryko, Bialystok Univ. of Technology (Poland)
Andrzej Zajac, Bialystok Univ. of Technology (Poland)
Marian Gilewski, Bialystok Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 8903:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013
Ryszard S. Romaniuk, Editor(s)

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