| 摘要 |
A measuring device for the optic measuring of an object 13 a is provided, in particular for measuring a motion of the object. The device includes an interferometer 20 with a measuring beam exit 12 , a reflection beam entry 14 , an interfering beam exit 15 , and a light source 1 for creating a light beam 8 , an optic detector 16 , which is arranged at the interfering beam exit 15 of the interferometer 20 such that a light beam exiting the interfering beam exit 15 impinges the detector and a signal processing unit 17 connected to the detector 16 being embodied such that they can measure measuring signals of the detector 16 . The interferometer ( 20 ) is provided with a switched beam entry ( 18 ) and is embodied such that dependent on a switching signal connected to a switched beam entry ( 18 ) a light beam exits the measuring beam exit ( 12 ) essentially with a predetermined light intensity and at a predetermined angle, and that the signal processing unit ( 17 ) is provided with a switched beam exit, which is connected to the switched beam entry ( 18 ) of the interferometer, with the signal processing unit ( 17 ) controlling the interferometer such that a light beam exits the measuring beam exit ( 12 ) only during the measuring of measuring signals essentially with a predetermined light intensity and at a predetermined angle.
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