JPS5657935A - Measuring method for multiple refractive index of transparent filament - Google Patents
Measuring method for multiple refractive index of transparent filamentInfo
- Publication number
- JPS5657935A JPS5657935A JP13376679A JP13376679A JPS5657935A JP S5657935 A JPS5657935 A JP S5657935A JP 13376679 A JP13376679 A JP 13376679A JP 13376679 A JP13376679 A JP 13376679A JP S5657935 A JPS5657935 A JP S5657935A
- Authority
- JP
- Japan
- Prior art keywords
- filament
- refractive index
- deltan
- interference fringes
- dtheta
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/21—Polarisation-affecting properties
- G01N21/23—Bi-refringence
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
PURPOSE:To realize a measurement of the multiple refractive index without measuring the diameter of the filament previously, by irradiating the laser beams the polarized faces of which are parallel and vertical to the filament and then observing the shift of the interference fringes. CONSTITUTION:The shift dtheta is observed between the interference fringes which are caused when the laser beam the polarized face of which is parallel to the filament 2 satisfying the conditions of DELTAn<lambda/D to the filament 2 and the interference fringes caused by irradiating the laser beam the polarized face of which is vertical to the filament 2. Thus the double refractive index DELTAn is obtained based on the fixed equation. In the above equation, lambda shows the wavelength of the beam source with D showing the diameter of the filament 2 respectively. The above-mentioned equation used e.g. DELTAn=(dtheta/2)[1+[n/(n-1)]sin(theta/2)] or DELTAn=dtheta/2, where theta shows the position of the interference fringes and n shows the refractive index of the filament 2 each.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13376679A JPS5657935A (en) | 1979-10-16 | 1979-10-16 | Measuring method for multiple refractive index of transparent filament |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13376679A JPS5657935A (en) | 1979-10-16 | 1979-10-16 | Measuring method for multiple refractive index of transparent filament |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5657935A true JPS5657935A (en) | 1981-05-20 |
JPS6223813B2 JPS6223813B2 (en) | 1987-05-25 |
Family
ID=15112452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13376679A Granted JPS5657935A (en) | 1979-10-16 | 1979-10-16 | Measuring method for multiple refractive index of transparent filament |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5657935A (en) |
-
1979
- 1979-10-16 JP JP13376679A patent/JPS5657935A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6223813B2 (en) | 1987-05-25 |
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