FIELD: biological and chemical testing.;SUBSTANCE: present invention provides a method and system for conducting biological or chemical testing, as well as a light energy exciter, which may include one or more light sources. The light energy exciter can emit excitation light directed towards the detector surface, which can support biological or chemical samples. The method for carrying out biological or chemical tests includes the following steps, where excitation light is emitted using a light energy exciter, wherein the light energy exciter comprises a first light source and a second light source, the first light source being designed to emit excitation light beams in a first emission wavelength range, and the second light source is designed to emit beams of excitation light in the second range of radiation wavelengths, wherein the light energy exciter further comprises a light guide for homogenizing the excitation light and directing the excitation light to the distal end of the light energy exciter, the light guide comprising a light entrance surface and a light exit surface and is configured to receive beams of excitation light from the first and second light sources. In this case, the light guide is made in the form of a cone-shaped structure and has an increasing diameter along its entire length in the direction from the light entrance surface of the light guide to the light exit surface of the light guide, and the light guide is configured to reflect the excitation light so that the light rays coming out from the light exit surface of the light guide, determined the cone of divergence of light, which diverges with respect to the optical axis of the exciter of light energy. The detector then receives the excitation light and the emission signal light resulting from the excitation by the excitation light, the detector comprises a detector surface for supporting biological or chemical samples and a sensor array located at a distance from the detector surface, the detector blocking the excitation light and allowing the signal light radiation propagate to the light sensors of the sensor matrix. Then, data signals are transmitted by the detector circuit depending on the photons detected by the light sensors of the sensor array.;EFFECT: increased efficiency of usage of light during scientific testing.;19 cl, 20 dwg
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