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

Lukasz Gryko; Andrzej Zajac; Marian Gilewski

doi:10.1117/12.2035433

25 October 2013 Optoelectronic set for measuring the absorption spectrum of the thin biological media

Lukasz Gryko, Andrzej Zajac, Marian Gilewski

Proceedings Volume 8903, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013; 89031C (2013) https://doi.org/10.1117/12.2035433
Event: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013, 2013, Wilga, Poland

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.

Citation Download Citation

Lukasz Gryko, Andrzej Zajac, and Marian Gilewski "Optoelectronic set for measuring the absorption spectrum of the thin biological media", Proc. SPIE 8903, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013, 89031C (25 October 2013); https://doi.org/10.1117/12.2035433

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