Title:
OPTICAL FIBER GLASS ECCENTRICITY MEASUREMENT DEVICE AND MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2019/088216
Kind Code:
A1
Abstract:
The glass eccentricity measurement device according to the present invention: comprises an irradiation unit for irradiating with light a side surface of a coated glass fiber obtained by coating a linear piece of glass, and a light-receiving part for receiving light that has been scattered and/or refracted following irradiation of the side surface of the coated glass fiber therewith; and measures the eccentricity of the glass in the coated glass fiber on the basis of the pattern of light and dark in the light received by the light-receiving part. The device comprises at least three sets of irradiation units and screens around the coated glass fiber, the sets being disposed at directions yielding different angles on a circumference centered on the coated glass fiber.
Inventors:
KOHDA HIROSHI (JP)
Application Number:
PCT/JP2018/040643
Publication Date:
May 09, 2019
Filing Date:
November 01, 2018
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
G01M11/00; G01B11/00; G02B6/00
Domestic Patent References:
| WO2017164402A1 | 2017-09-28 | |||
| WO2015107440A1 | 2015-07-23 |
Foreign References:
| JPH085504A | 1996-01-12 | |||
| JPH1010005A | 1998-01-16 | |||
| JPH10508946A | 1998-09-02 | |||
| JPH09126725A | 1997-05-16 | |||
| JPH04318437A | 1992-11-10 | |||
| JPS62197738A | 1987-09-01 |
Attorney, Agent or Firm:
SHIN-EI PATENT FIRM, P.C. (JP)
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