ANALYSIS OF GEOMETRIC INFORMATION USED IN MODELING THE INTERACTION OF OPTICAL RADIATION WITH THE MEDIUM

Abstract

The article is devoted to the problem of expanding the range of implementation of geometric modeling methods for objects that are involved in energy exchange by radiation. It is relevant to consider different systems of objects of radiation energy exchange and analysis of geometric information used in solving scientific and practical problems. Expanding the boundaries of the application of methods for modeling objects, phenomena and processes always contributes to their development and improvement. As a result of changes in the research object or new implementations of already developed methods, new tasks and conditions for solving problems arise. This leads to a review of existing concepts in modeling and the definition of new directions in research. The same goes for using geometric methods and models. For example, the developed method of geometric modeling, which allows us to solve the problem of estimating the fraction of radiation energy transmitted from a source to a certain point on the surface of the receiver, is practical for practical tasks provided that there is a homogeneous medium in the layer of substance (tissue), if it does not matter how it is delivered the physical nature of optical radiation, and if the boundaries of the areas on the surfaces of the receiver and source are determined. In the multilayer optical system in this method, a portion of one boundary surface of a layer will be considered as a radiation source, and a portion of another boundary surface of this layer will be considered as a receiver. The paper analyzes the geometric information that underlies the scientific and practical problems of modeling systems of objects of optical radiation, which is distributed in the physical medium, using the example of biological tissue as a multilayer, inhomogeneous optical medium. As a result of a geometric analysis of the scientific and practical problems of the passing of optical radiation through a multilayer optical medium (using the example of biological tissue), geometric patterns were formed for applying methods of geometric modeling of systems of objects not only of transmission, but also of multiple reflection of radiation.

Key words: geometric modeling, optical medium, optical radiation, boundary surfaces.