&lt;title&gt;Development of a new automatic gauge block interferometer up to 250 mm&lt;/title&gt;

Narumi, Tatsuya; Shutoh, Shunji; Nakamura, Taizo; Iida, Joji; Sawabe, Masaji

doi:10.1117/12.323094

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Automating Fringe Analysis1

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“…Most of the automatic or semi-automatic gauge block interferometers described in the literature use a phase stepping method to determine the fringe fraction [6][7][8]. These authors give standard uncertainties in fringe fraction determination ranging from 0.02 to 0.004 of a fringe.…”

Section: Automating Fringe Analysismentioning

confidence: 99%

Automation of a 1960s Hilger gauge block interferometer

2003

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This paper describes improvements to a Hilger gauge block interferometer, including a fibre optic feed for a traceable laser radiation, use of a CCD camera for computer-controlled acquisition of fringe images and automatic analysis of the fringe image to obtain the fringe fraction. The gauge measuring process is now automated, computer-controlled, more accurate and significantly faster and easier to operate than the original design.

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Section: Automating Fringe Analysismentioning

confidence: 99%