FIELD: measurement technology. SUBSTANCE: device has monochromatic radiation source, specimen holder, rotating flat mirror with axis of rotation positioned on its reflecting surface, as well as first lens installed so that point optically conjugated with specimen point at which measurement is performed is located on axis of rotation of flat mirror, at place exposed to source radiation. Device has also second lens mounted for optical coupling of specimen point at which measurement is performed with receiving area of receiver at different angular positions of mirror. EFFECT: higher measurement results. 2 cl, 1 dwg
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Authors
Dates
1998-01-20—Published
1994-07-08—Filed