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Dynamically Controlled LED Luminaire for Contrast Visualisation of Biological Tissues During Surgical Procedures L&E, Vol. 29, No. 6, 2021

Light & Engineering 29 (6)

Volume 29
Date of publication 12/28/2021
Pages 144–150

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Dynamically Controlled LED Luminaire for Contrast Visualisation of Biological Tissues During Surgical Procedures L&E, Vol. 29, No. 6, 2021
Articles authors:
Andrey V. Aladov, Alexander L. Zakgeim, Julia V. Semyashkina, Anton E. Chernyakov

Andrey V. Aladov, Ph. D. of Technical Sciences. He graduated from the Faculty of Physics of the Belarusian State University in 1981. At present, he is a Senior Researcher at Federal State Budgetary Institution Scientific and Technological Centre for Microelectronics and Submicron Hetero-structures of the Russian Academy of Sciences

Alexander L. Zakgeim, Ph. D. of Technical Sciences. In 1972, he graduated from the Leningrad Electro-technical Institute named after V.I. Ulyanov (Lenin). At present, he is a Scientific Secretary, Head of Laboratory at Scientific and Technological Centre for Microelectronics and Submicron Hetero-structures of the Russian Academy of Sciences

Julia V. Semyashkina, Ph. D. In technical science. In 2017, she graduated from ITMO University. At present, she is teaching assistant of the faculty of Laser Photonics and Optoelectronics of the ITMO University

Anton E. Chernyakov, Ph. D. of Physics and Mathematics Sciences. He graduated in 2006 from the St. Petersburg State Electro-technical University “LETI” named after V.I. Ulyanov (Lenin). At present, he is a Senior Researcher at Federal State Budgetary Institution Scientific and Technological Centre for Microelectronics and Submicron Hetero-structures of the Russian Academy of Sciences

Abstract:
The article reviews the main theoretical, engineering and technological, circuit-engineering and software aspects of development of a dynamically controlled luminaire based on light emitting diodes for contrast visualisation of biological tissues during surgical procedures. The design concept of such surgical luminaire is proposed, which combines high-quality white lighting and coloured accent lighting increasing the contrast of visualisation of particular tissues and borders between them. The calculation model of the luminaire optical system allows maximising the level of illumination and uniformity of illuminance and colour of the surgical area. The software of the luminaire allows to independently modifying intensity of radiation of six coloured light emitting diodes with blue (460 nm), turquoise (505 nm), green (530 nm), green-yellow (550 nm), orange (590 nm) and red (630 nm) light colours for synthesis of coloured lighting of virtually any chromaticity. The level of general lighting by means of phosphor light emitting diodes can also be varied within a wide range. Chromaticity and level of lighting are adjusted by means of pulse-duration modulation of light emitting diode current and the light parameters of the luminaire are controlled by a remote computer via a radio channel.
This medical luminaire is primarily designed for lighting during surgical procedures and it can also be used for visual diagnostics based on the colour of analysed tissues.
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