Method of measuring circularity of an optical fiber

Details Method of measuring circularity of an optical fiber Method of measuring circularity of an optical fiber

2006-09-19

2006-09-19

Pak, Sung (Department: 2874)

Optical waveguides

Miscellaneous

C356S073100

Reexamination Certificate

active

07110657

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.

REFERENCES:
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patent: 4563087 (1986-01-01), Bourbin et al.
patent: 5367372 (1994-11-01), DiVita et al.
patent: 6421118 (2002-07-01), Shaar

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