2024
DOI: 10.1088/1361-6501/ad1a85
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A normal tracking differential confocal measurement method for multiple geometric parameters of hemispherical shell resonator with a common reference

Yuhan Liu,
Xiaocheng Zhang,
Yuan Fu
et al.

Abstract: This paper proposes a normal tracking differential confocal measurement method for the inside and outside surface profiles, shell thickness uniformity, and central asymmetry of inside and outside surfaces of the hemispherical shell resonator (HSR). A differential confocal technique with high-transmittance focusing ability is used to measure a single point on the inside and outside surfaces of the HSR. The normal alignment measurement technique is used to accurately measure the inside and outside surfaces and s… Show more

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