FIELD: physics.
SUBSTANCE: invention relates to the fiber optic equipment and is intended for use in various fiber optic systems using the incoherent sources of radiation, including in the introscopes, light guides based remote power supply sources. Essence of the claimed solution lies in the fact that in the known radiation into the light guide introducing method, through which several quasi-parallel beams are formed from emitted from the radiation source radiation, from each beam separating beams with the predetermined spectral region, then from each of them, forming beams having maximum intensity in the center with its smooth decrease to zero at the edges, increasing their brightness and reducing their diameter due to the self-focusing effect, then these beams radiation is introduced into the intermediate light guides, which are further combined into the single lightguide. Also, the claimed device comprises sequentially mounted on one optical axis and optically coupled systems of mirrors and lenses, by means of which two quasi-parallel beams with the necessary spectral region are formed, next, their brightness increases and the diameter decreases due to self-focusing into the glass plates with the refractive index significant dependence on temperature, and then through the graded rod lenses enters into the intermediate light guides, which further combine into one.
EFFECT: increase in the radiation from the incoherent source with given spectral region input into the light guide efficiency.
2 cl, 1 dwg
