Method of measuring circularity of an optical fiber
US7110657B1 · kind B1 · utility
1Cited by
4References
9Claims
0Family size
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Key dates
| Filing date | Feb 23, 2005 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Feb 23, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4227
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Distortion introduced by an imaging system is characterized by positioning a generally cylindrical object and imaging optics in a first relative angular position about an axis of rotation that substantially coincides with the longitudinal axis of the object and employing the imaging optics to image the end face of the object on a detector. First and second definitions of the shape of the image of the periphery of the end face of the object are extracted from image data provided by the detector when the object and the imaging optics are in first and second relative angular positions. The first and second definitions are compared.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.