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Sensors 2013, 13(10), 13090-13098; doi:10.3390/s131013090

Active Angular Alignment of Gauge Blocks in Double-Ended Interferometers

* ,
Institute of Scientific Instruments, Academy of Sciences of the Czech Republic, Královopolská 147, Brno 612 64, Czech Republic
* Author to whom correspondence should be addressed.
Received: 14 August 2013 / Revised: 12 September 2013 / Accepted: 23 September 2013 / Published: 27 September 2013
(This article belongs to the Section Physical Sensors)
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This paper presents a method implemented in a system for automatic contactless calibration of gauge blocks designed at ISI ASCR. The system combines low-coherence interferometry and laser interferometry, where the first identifies the gauge block sides position and the second one measures the gauge block length itself. A crucial part of the system is the algorithm for gauge block alignment to the measuring beam which is able to compensate the gauge block lateral and longitudinal tilt up to 0.141 mrad. The algorithm is also important for the gauge block position monitoring during its length measurement.
Keywords: low-coherence interferometry; gauge block; metrology low-coherence interferometry; gauge block; metrology
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Buchta, Z.; Řeřucha, Š.; Hucl, V.; Čížek, M.; Šarbort, M.; Lazar, J.; Číp, O. Active Angular Alignment of Gauge Blocks in Double-Ended Interferometers. Sensors 2013, 13, 13090-13098.

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