Apparatus to determine the composition of a tissue sample is a layered structure of dielectric materials with alternating refraction index values, with the sample in a sandwich between them, to be exposed to electromagnetic radiation

摘要

The apparatus to determine the composition of a sample is a layered structure composed of eight dielectric layers (6) with one refraction index, and eight dielectric layers (7) with a different refraction index, together with the sample (9). The apparatus to determine the composition of a sample is a layered structure composed of eight dielectric layers (6) with one refraction index, and eight dielectric layers (7) with a different refraction index, together with the sample (9). The two sets of dielectric layers alternate, with the sample in the center of the structure. The dielectric layers each have an optical density of 4 the wavelength of a reference frequency. The layers are exposed to electromagnetic radiation, so that they give at least a partial reflection at the radiation outlet surfaces and at least a partial reflection at the radiation inlet surfaces, to give interference effects from the reflected and/or transmitted radiation. The amount of reflected and/or transmitted electromagnetic radiation is registered by a sensor for evaluation.