Title:
SPECIAL OPTICAL FIBER FOR MEASURING 3D CURVED SHAPE, MANUFACTURING METHOD THEREOF, AND SYSTEM FOR MEASURING 3D CURVED SHAPE BY USING SPECIAL OPTICAL FIBER
Document Type and Number:
WIPO Patent Application WO/2021/086129
Kind Code:
A1
Abstract:
The present invention discloses a special optical fiber for measuring a 3D curved shape, and a system for measuring the 3D curved shape by using a special optical fiber. The special optical fiber comprises: an optical fiber core for transmitting an optical signal; an inner cladding covering the optical fiber core; and an outer cladding covering the inner cladding. In particular, the refractive index (n1) of the optical fiber core, the refractive index (n2) of the inner cladding, and the refractive index (n3) of the outer cladding are set in a relationship of n1≥n3>n2. The inner cladding covering the optical fiber core has a cut portion in the longitudinal direction. The optical fiber core is exposed through the cut portion. In addition, the cut portion is filled with a material having the same refractive index as the optical fiber core or the outer cladding.
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Inventors:
JU SEONG MIN (KR)
LEE YOUNG WOO (KR)
LEE YOUNG WOO (KR)
Application Number:
PCT/KR2020/015072
Publication Date:
May 06, 2021
Filing Date:
October 30, 2020
Export Citation:
Assignee:
OPTONICS CO LTD (KR)
JU SEONG MIN (KR)
JU SEONG MIN (KR)
International Classes:
G01B11/16; G01B11/24; G01M11/00; G02B6/42
Foreign References:
| KR101208834B1 | 2012-12-06 | |||
| JP2007310135A | 2007-11-29 | |||
| KR101868081B1 | 2018-06-18 | |||
| JP5370860B2 | 2013-12-18 | |||
| JP2015510142A | 2015-04-02 |
Attorney, Agent or Firm:
SESHIN PATENT & LAW FIRM (KR)
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