JPS5589730A - Measurement method of double refraction for transparent filament - Google Patents

Measurement method of double refraction for transparent filament

Info

Publication number
JPS5589730A
JPS5589730A JP16301578A JP16301578A JPS5589730A JP S5589730 A JPS5589730 A JP S5589730A JP 16301578 A JP16301578 A JP 16301578A JP 16301578 A JP16301578 A JP 16301578A JP S5589730 A JPS5589730 A JP S5589730A
Authority
JP
Japan
Prior art keywords
double refraction
filament
laser light
polarized plane
transparent filament
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16301578A
Other languages
Japanese (ja)
Inventor
Jiro Shimizu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unitika Ltd
Original Assignee
Unitika Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unitika Ltd filed Critical Unitika Ltd
Priority to JP16301578A priority Critical patent/JPS5589730A/en
Publication of JPS5589730A publication Critical patent/JPS5589730A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
    • G01M11/37—Testing of optical devices, constituted by fibre optics or optical waveguides in which light is projected perpendicularly to the axis of the fibre or waveguide for monitoring a section thereof

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To obtain double refraction accurately with a simple operation, by emitting the laser light having vertical and parallel polarized plane to the transparent filament and observing the scattered light. CONSTITUTION:When the laser light having vertical polarized plane to the filament 2 from the light source 1 is emitted, a part is reflected on the surface and the other is transmitted the inside, and the both form a number of interference fringes on the photo detector 3 opposite to the light source 1. The maximum and minimum parts 4, 5 of luminous intensity are caused on the photo detector 3 in response to the scattered angle. By measuring the scattering angle theta and the angle dtheta between the maximum and minimum by these, the refractive index n1 is obtained with calculation. Similarly, the refractive index n11 is obtained with parallel polarized plane laser light. Further, the double refraction can be determined with DELTAn=n11-n1. As a result, the double refraction of transparent filament can simply be obtained without using various immersion liquids and microscopes.
JP16301578A 1978-12-28 1978-12-28 Measurement method of double refraction for transparent filament Pending JPS5589730A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16301578A JPS5589730A (en) 1978-12-28 1978-12-28 Measurement method of double refraction for transparent filament

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16301578A JPS5589730A (en) 1978-12-28 1978-12-28 Measurement method of double refraction for transparent filament

Publications (1)

Publication Number Publication Date
JPS5589730A true JPS5589730A (en) 1980-07-07

Family

ID=15765566

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16301578A Pending JPS5589730A (en) 1978-12-28 1978-12-28 Measurement method of double refraction for transparent filament

Country Status (1)

Country Link
JP (1) JPS5589730A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003056288A1 (en) * 2001-12-27 2003-07-10 Pirelli & C. S.P.A. On-line tension measurement in an optical fibre

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003056288A1 (en) * 2001-12-27 2003-07-10 Pirelli & C. S.P.A. On-line tension measurement in an optical fibre

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