Method and apparatus of measuring outer diameter and...

Details Method and apparatus of measuring outer diameter and... Method and apparatus of measuring outer diameter and...

G - Physics

01

B

33/63

G01B 11/08 (2006.01) G01M 11/00 (2006.01)

Patent

CA 1295476

ABSTRACT OF THE INVENTION A method and apparatus for examing the structure of an optical fiber such as eccentricity, clad and core diameters, nonroundness of clad and so on. The structure of the optical fiber can be accurately determined by irradiating the side wall of the optical fiber with a light such as a white light, a monochromatic light or the like in the direction perpendicular to the axis of the optical fiber, detecting an image of the, light transmitted through the optical fiber, and/or diffraction fringes formed by lights diffracted by the outer edge of the optical fiber to obtain a luminance distribution of the light traversing the optical fiber, and calculating the luminance distribution thereby to obtain accurate structural parameters of the optical fiber.

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