FIELD: optics; lasers.
SUBSTANCE: invention relates to optical elements, in particular to compact elements for focusing and collection of laser radiation. Optical fiber sensor includes a focusing and a collecting element which are formed from the optical fiber of the sensor by melting the end face with giving it a sphere-like shape, the diameter of which exceeds the diameter of the optical fiber by 1.2–1.5 times.
EFFECT: technical result of claimed invention is improved manufacturability, reduced cost, reduced dimensions.
1 cl, 2 dwg
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