| 摘要 |
measurement technology. SUBSTANCE: radiation is directed on to fiber to control its position, light scattered from fiber is modulated spatially, modulated light is detected, spatial frequency ωD of detected light which specifies location of fiber is determined. Controlling signal depending on value of spatial frequency ωD. is generated in addition to control position of fiber. Device to measure distance to surface has illumination aids, aid for spatial modulation of scattered light coming in the form of Ronchi grid, for example, detecting aids and aids determining spatial frequency ωD.. EFFECT: increased measurement accuracy. 14 cl, 12 dwg, 1 tbl
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