Semiconductor emitters are used in many areas of medicine, allowing for new methods of diagnosis, treatment and effective prevention of many diseases. The article presents selected areas of application of semiconductor sources in UVVIS- NIR range, where in recent years competition in semiconductor lasers and LEDs applications has been observed. Examples of applications of analyzed sources are indicated for LLLT, PDT and optical diagnostics using the procedure of color contrast. Selected results of LLLT research of the authors are presented that were obtained by means of the developed optoelectronic system for objectified irradiation and studies on the impact of low-energy laser and LED on lines of endothelial cells of umbilical vein. Usefulness of the spectrally tunable LED lighting system for diagnostic purposes is also demonstrated, also as an illuminator for surface applications - in procedure of variable color contrast of the illuminated object.
In the paper the authors present the developed optoelectronic set for measuring spectral reflectance of living human skin. The basic elements of the set are: the illuminator consists of the LED illuminator emitting a uniform distribution of spectral irradiance in the exposed field, the semispherical measuring chamber and the spectrometer which measures spectrum of reflected radiation. Measured radiation is from spectral range of tissue optical window (from 600 nm to 1000 nm). Knowledge about the reflectance spectrum of the patient skin allows adjusting spectral and energetic parameters of the radiation used in biostimulation treatment. The developed set also enables the repeatable exposures of patients in the Low Level Laser Therapy procedures.
Fiberscopes are composed of an ordered optical fiber bundle. This construction allows faithful transmission of the luminance distribution of the frontal area to the end of fiberscope-image. This paper presents method to obtain the transfer effect of the luminance distribution in unordered fiber bundle. Large number of fibers in a bundle results in the possibility of obtaining high-resolution. This article shows the possibility of obtaining the function of a typical fiberscope in a disordered bundle of fibers.
This paper presents fiber optic illumination sensor based on composition of detecting special shape optical fibers. The proposed optical fibre system was used for illumination measurements. The experimentally obtained characteristics of designed detection head are presented and compared to standard illumination measurement equipment for inclination angles from 0o to 90o. The good agreement of characteristics of proposed system with commercial available devices was obtained. The potential applications of illumination optical fibre sensor are presented.
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