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Systems and methods for inspecting wound optical fiber

A technology of optical fiber and detection direction, applied in the field of optical fiber detection, which can solve the problems of easily missing optical fiber coating and difficult detection process.

Active Publication Date: 2016-07-06
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, wear and tiny defects in fiber optic coatings, such as air bubbles and punctures, are easily missed due to the fiber's bright reflective surface and small diameter
Also, a single layer of fiber on a storage bobbin can represent over a thousand turns, making the inspection process daunting

Method used

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  • Systems and methods for inspecting wound optical fiber
  • Systems and methods for inspecting wound optical fiber
  • Systems and methods for inspecting wound optical fiber

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0048] attached Figure 3A is a high viewing angle of the measurement system 30 configured to perform defect measurement in the wound optical fiber 20W according to the first embodiment. The measurement system 30 includes a light source 50 that emits illumination light 52 , and a digital camera 70 . The light source 50 and digital camera 70 are arranged along axis A1, and the spool 10 is arranged along axis A1 between the light source and the digital camera so that the light source and digital camera substantially face opposite sides of the wound fiber 20W. In one example, the illumination direction and the detection direction are positioned substantially 180° apart with respect to the bobbin 10 . The front side 21F of the wound optical fiber 20W faces the light source 50 and the back side 21B faces the digital camera 70 . The light 52 reaching the digital camera 70 through the wound optical fiber 20W is referred to herein as measurement light 52M.

[0049] attached Figur...

no. 2 example

[0065] attached Figure 7A shows something similar to the attached Figure 3A The exemplary configuration of the measurement system 30, but where the light source 50 and digital camera 70 are located on the front side 26F of the wound fiber 20W, and in one example, with little or no directional angle. attached Figures 7B to 7D is similar to the Figure 3B A schematic top-down view of , showing the illumination direction ID in which the illumination light 52 is incident and the detection direction DD of the measurement light 52M detected by the digital camera 70 . attached Figure 7CAn example is shown in which a beam splitter BS is used to allow the illumination light 52 and the measurement light 52M to share a part of the same optical path, ie the same direction. attached Figure 7C An embodiment is shown in which there is a small measurement angle θ between the illumination and detection directions, such as θ≦10°.

[0066] In the second embodiment, the measurement lig...

no. 3 example

[0070] attached Figure 9A shows something similar to the attached Figure 3A and 7A The exemplary configuration of the measurement system 30, but wherein the light source 50 and the digital camera 70 are arranged such that the illumination direction of the illumination light 52 and the detection direction of the measurement light 52M define a measurement angle θ ranging from about 80° to about 150°, For example about 130°.

[0071] attached Figure 9B is attached Figure 9A A schematic top-down view of the measurement system 30 of , showing illumination light 52 propagating along the illumination direction ID to the wound fiber 20W, and measurement light 52M propagating from the wound fiber to the digital camera 70 along the detection direction DD. The measurement angle θ between the illumination direction ID and the detection direction DD is also shown.

[0072] attached Figure 10 is used as attached Figure 9A and 9B Digital image 72 of spun optical fiber 20W illum...

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Abstract

Systems and methods for inspecting wound optical fiber to detect and characterize defects are disclosed. The method includes illuminating the wound optical fiber with light from a light source and capturing a digital image based on measurement light that is redirected by the wound optical fiber to a digital camera. The method also includes processing the digital image with a computer to detect and characterize the defects. The types of defects that can be detected using the systems and methods disclosed herein include bubbles, abrasions, punctures, scratches, surface contamination, winding errors, periodic dimensional errors, aperiodic dimensional errors and dents.

Description

[0001] This application claims the benefit of US Provisional Application No. 61 / 876,861, filed September 12, 2013, under 35 U.S.C § 119, the contents of which are hereby incorporated by reference in their entirety. technical field [0002] The present disclosure relates to optical fiber inspection and in particular to inspection of tangled optical fibers. Background technique [0003] The manufacture of optical fibers primarily involves subjecting a preform to heat and drawing the preform under tension to produce an optical fiber. Various other operations, such as coating, are typically performed as part of the manufacturing process. The final fiber is usually wound onto storage spools that can accommodate from hundreds of meters up to thousands of meters of fiber. [0004] Optical fibers are inspected during the manufacturing process. This type of inspection is typically performed on the fiber as a separate part prior to being wound by itself onto a spool for storage. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/08B65H54/28G01M11/00
CPCG01M11/088G01M11/37B65H63/006B65H2701/32G01M11/35G01M11/30G06T7/0008G06T2207/10016G06T2207/30108G06T2207/20024G06T2207/20048G01N21/896G01N21/958G01N21/952G01N2021/8965G01N2021/8887G01N2021/9511
Inventor I·R·梅约夫
Owner CORNING INC