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Proceedings Paper

Full-field optical coherence tomography apply in sphere measurements
Author(s): Wei Shi; Weiwei Li; Juncheng li; Jingyu Wang; Jianguo Wang
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Paper Abstract

The geometry of a spherical surface, for example that of a precision optic, is completely determined by the radius –of-curvature at one point and the deviation from the perfect spherical form at all other points of the sphere. Full-field Optical Coherence Tomography (FF-OCT) is a parallel detection OCT technique that utilizes a 2D detector array. This technique avoids mechanical scanning in imaging optics, thereby speeding up the imaging process and enhancing the quality of images. The current paper presents an FF-OCT instrument that is designed to be used in sphere measurement with the principle of multiple delays (MD) OCT to evaluate the curvature and radius of curved objects in single-shot imaging. The optimum combination of the MD principle with the FF-OCT method was evaluated, and the radius of a metal ball was measured with this method. The generated 2n-1 contour lines were obtained by using an MDE with n delays in a single en-face OCT image. This method of measurement, it engaged in the measurement accuracy of spherical and enriches the means of measurement, to make a spherical scan techniques flexible application.

Paper Details

Date Published: 19 October 2016
PDF: 5 pages
Proc. SPIE 10154, Advanced Optical Design and Manufacturing Technology and Astronomical Telescopes and Instrumentation, 101540Y (19 October 2016); doi: 10.1117/12.2246616
Show Author Affiliations
Wei Shi, Inner Mongolia Univ. of Science and Technology (China)
Weiwei Li, Inner Mongolia Univ. of Science and Technology (China)
Juncheng li, Inner Mongolia Univ. of Science and Technology (China)
Jingyu Wang, Univ. of Kent (United Kingdom)
Jianguo Wang, Inner Mongolia Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 10154:
Advanced Optical Design and Manufacturing Technology and Astronomical Telescopes and Instrumentation
Min Xu; Ji Yang, Editor(s)

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