FIELD: medical engineering. SUBSTANCE: apparatus designed for irradiating surfaces by laser beam with the aid of optical device charged by pencil of laser beams. Optical device includes laser, first optical system to inject pencil of laser beams into light guide whose inlet portion is secured in holder, second optical system to direct laser beam coming out of light guide onto surface to be irradiated, all being positioned on the same optical axis. Light guide is made of multimode fibers of several meters in length. Second optical system is projection system incorporating microscope. EFFECT: new design. 10 cl, 1 dwg
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