Mathematical modeling of led radiation in the system of medical diagnostics
Journal Title: Вісник Тернопільського національного технічного університету - Year 2016, Vol 84, Issue 4
Abstract
The use in the medical diagnosis light irritation with intensity lower than standard level leads to decreasing invasiveness and increasing resolution of bioobject response. This improves the quality of diagnosis the state of bioobjects by the results of such active electrophysiological study. The intensity of light irritation recently determined from properties diagram of radiation and place of location of its source. For transfer of energy through a free space, layers of biological media on to the object of irradiation choose the standard levels of intensity. That helps in order to increasing of likelyhood the diagnostic decision about the state of bioobject by result analysis of its response on to irritation. In low intensity irritation, the biomedia influences on the transfer of energy and emerges requirement to control the intensity of irradiation on the surface of the target object. The propagation of light beams in biological media are investigated in ophthalmology, astronomy, biophysics only in order to evaluate the image quality on the surface of the irradiation facility but not intensity of irradiation. In the paper is given the results of studies of the method for control of irradiation of the surface of the target object, which is located in bio media. Based on the wave theory of light, the choice of the mathematical models for the radiation of LED is discussed, as well as expressions for module of Poynting vectors for dipole model of the chip emission and the LED radiation. Expression of the factor transform of light intensity of the LED radiation into intensity of irradiation the surface of the target object is defined. Results of research had been applied for effective irritation the retina eye by light with intensity lower than standard level.
Authors and Affiliations
Mykhailo Bachynskyy, Yuriy Stoyanov, Bohdan Yavorskyy
Keywords
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