CA2261469A1 - Method and apparatus for measurement of absolute biaxial birefringence in monolayer and multilayer films, sheets and shapes - Google Patents

Method and apparatus for measurement of absolute biaxial birefringence in monolayer and multilayer films, sheets and shapes Download PDF

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Publication number
CA2261469A1
CA2261469A1 CA002261469A CA2261469A CA2261469A1 CA 2261469 A1 CA2261469 A1 CA 2261469A1 CA 002261469 A CA002261469 A CA 002261469A CA 2261469 A CA2261469 A CA 2261469A CA 2261469 A1 CA2261469 A1 CA 2261469A1
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CA
Canada
Prior art keywords
absolute
sample
measurement
birefringence
biaxial
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
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CA002261469A
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French (fr)
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CA2261469C (en
Inventor
Abdellah Ajji
Jacques Guevremont
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National Research Council of Canada
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National Research Council of Canada
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Publication of CA2261469A1 publication Critical patent/CA2261469A1/en
Application granted granted Critical
Publication of CA2261469C publication Critical patent/CA2261469C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J4/00—Measuring polarisation of light
    • G01J4/04—Polarimeters using electric detection means
    • 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

Abstract

A system and apparatus for the measurement of absolute biaxial birefringence of plastic materials is described. The materials which must be at least partially transparent can be constituted of one or several similar or dissimilar layers.
In the latter case, the birefringence of each material can be determined. The technique uses a multiwavelength white light source that provides at least two beams projected at different angles of incidence on the sample. The beams pass through first polarizers before they are incident on the sample and through second polarizers after they have passed through the sample. The beams are then directed to a detector for measuring each beam intensity or transmittance as a function of wavelength for the incident angles at different times, and are analyzed using nonlinear regressions to determine retardation. By the knowledge of the thickness of the material, the absolute biaxial birefringences are calculated for any specific wavelength. The regression procedure incorporates the material dependent optical constants for the calculations and to discriminate between different materials for multilayer samples.
CA002261469A 1998-02-23 1999-02-11 Method and apparatus for measurement of absolute biaxial birefringence in monolayer and multilayer films, sheets and shapes Expired - Fee Related CA2261469C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/027,561 US5864403A (en) 1998-02-23 1998-02-23 Method and apparatus for measurement of absolute biaxial birefringence in monolayer and multilayer films, sheets and shapes
US09/027,561 1998-02-23

Publications (2)

Publication Number Publication Date
CA2261469A1 true CA2261469A1 (en) 1999-08-23
CA2261469C CA2261469C (en) 2007-08-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA002261469A Expired - Fee Related CA2261469C (en) 1998-02-23 1999-02-11 Method and apparatus for measurement of absolute biaxial birefringence in monolayer and multilayer films, sheets and shapes

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US (1) US5864403A (en)
CA (1) CA2261469C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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WO2005054825A1 (en) * 2003-12-03 2005-06-16 Pulp And Paper Reseach Institute Of Canada Circularly polarized light method and device for determining wall thickness and orientations of fibrils of cellulosic fibres

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SE506286C2 (en) * 1996-05-09 1997-12-01 Ifunga Test Equipment Bv Device for measuring double refraction in an optical data carrier
AU8579998A (en) 1997-07-28 1999-02-16 Hinds Instruments, Inc. Measurement of waveplate retardation using a photoelastic modulator
CA2319729A1 (en) 1998-02-20 1999-08-26 Hinds Instruments, Inc. Birefringence measurement system
AU3299399A (en) * 1998-02-20 1999-09-06 Hinds Instruments, Inc. Birefringence measurement system
US6697157B2 (en) * 1999-05-24 2004-02-24 Hinds Instruments Birefringence measurement
US6157448A (en) * 1999-10-08 2000-12-05 Uniopt Co., Ltd. Birefringence measurement optical system and high spatial resolution polarimetric apparatus
US6268914B1 (en) 2000-01-14 2001-07-31 Hinds Instruments, Inc. Calibration Process For Birefringence Measurement System
WO2001073385A1 (en) * 2000-03-31 2001-10-04 Hinds Instruments, Inc System for measuring of both circular and linear birefringence
EP1397651B1 (en) * 2001-06-18 2007-06-06 Hinds Instruments, Inc. Birefringence measurement at deep-ultraviolet wavelengths
CA2466318A1 (en) * 2001-11-09 2003-05-22 Exxonmobil Chemical Patents Inc. On-line measurement and control of polymer properties by raman spectroscopy
WO2005049663A2 (en) * 2002-10-15 2005-06-02 Exxonmobil Chemical Patents Inc. On-line measurement and control of polymer properties by raman spectroscopy
EP1573287A4 (en) * 2002-12-20 2009-11-11 Hinds Instruments Inc Out-of-plane birefringence measurement
WO2004063234A1 (en) * 2003-01-06 2004-07-29 Exxonmobil Chemical Patents Inc. On-line measurement and control of polymer product properties by raman spectroscopy
US7224457B2 (en) * 2003-09-25 2007-05-29 Georgia Tech Research Corporation Performing retardation measurements
US7233395B2 (en) * 2003-09-25 2007-06-19 Georgia Tech Research Corporation Performing retardation measurements
US7075648B2 (en) * 2003-09-25 2006-07-11 Georgia Tech Research Corporation Performing retardation measurements
US7180602B2 (en) * 2003-12-11 2007-02-20 Nuonics, Inc. Agile spectral interferometric microscopy
US7310145B2 (en) 2004-02-23 2007-12-18 Ethicon, Inc. Apparatus and method for determining optical retardation and birefringence
US7298492B2 (en) * 2004-12-29 2007-11-20 Honeywell International Inc. Method and system for on-line measurement of thickness and birefringence of thin plastic films
US7483129B2 (en) * 2005-07-22 2009-01-27 Exxonmobil Chemical Patents Inc. On-line properties analysis of a molten polymer by raman spectroscopy for control of a mixing device
US7505129B2 (en) 2005-07-22 2009-03-17 Exxonmobil Chemical Patents Inc. On-line analysis of polymer properties for control of a solution phase reaction system
US7505127B2 (en) * 2005-07-22 2009-03-17 Exxonmobil Chemical Patents Inc. On-line raman analysis and control of a high pressure reaction system
DE102006057727A1 (en) * 2006-12-07 2008-06-12 Brückner Maschinenbau GmbH Method for measuring the birefringence and / or the retardation, in particular on at least partially transparent films and associated apparatus
MX2016001839A (en) 2013-08-12 2016-05-24 American Glass Res Blow molder control systems snad methods.
US9228936B2 (en) * 2013-12-03 2016-01-05 Hinds Instruments, Inc. Birefringence measurement of polycrystalline silicon samples or the like
CN104460062B (en) * 2014-12-12 2018-09-18 深圳市华星光电技术有限公司 A kind of smooth orientation characteristic detecting method, apparatus and system
CN111044490B (en) * 2019-12-18 2022-06-03 中山大学 Method for measuring axial refractive index of anisotropic semiconductor optical film

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US3902805A (en) * 1973-09-17 1975-09-02 Vishay Intertechnology Inc Automatic birefringence measuring apparatus
US4309110A (en) * 1978-04-23 1982-01-05 Leo Tumerman Method and apparatus for measuring the quantities which characterize the optical properties of substances
CA1153578A (en) * 1982-07-14 1983-09-13 Jerzy T. Pindera Device for birefringence measurements using three selected sheets of scattered light (isodyne selector, isodyne collector, isodyne collimator)
US4521111A (en) * 1982-07-23 1985-06-04 E. I. Du Pont De Nemours And Company Apparatus for measurement of molecular orientation
DE3543632A1 (en) * 1985-12-11 1987-06-19 Hoechst Ag METHOD AND DEVICE FOR DETERMINING THICKNESS AND / OR ORIENTATION CHANGES WITHIN AN OPTICALLY ACTIVE MATERIAL RAIL
JPS6382345A (en) * 1986-09-26 1988-04-13 Orc Mfg Co Ltd Double refraction measurement and display
US4973163A (en) * 1988-10-08 1990-11-27 Kanzaki Paper Manufacturing Co., Ltd. Method for measuring birefringence
US5257092A (en) * 1990-06-27 1993-10-26 Asahi Kogaku Kogyo Kabushiki Kaisha Apparatus for measuring polarization and birefringence
JPH0534273A (en) * 1991-07-29 1993-02-09 Kanzaki Paper Mfg Co Ltd Retardation measuring apparatus
US5504581A (en) * 1992-02-29 1996-04-02 Kanzaki Paper Manufacturing Company, Ltd. Method and apparatus for measuring birefringence
JP2792315B2 (en) * 1992-03-10 1998-09-03 松下電器産業株式会社 Birefringence measurement device
JP2898870B2 (en) * 1993-12-01 1999-06-02 財団法人鉄道総合技術研究所 Hull support mechanism for current collectors for railway vehicles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054825A1 (en) * 2003-12-03 2005-06-16 Pulp And Paper Reseach Institute Of Canada Circularly polarized light method and device for determining wall thickness and orientations of fibrils of cellulosic fibres
US7289210B2 (en) 2003-12-03 2007-10-30 Fpinnovations Circularly polarized light method and device for determining wall thickness and orientations of fibrils of cellulosic fibres

Also Published As

Publication number Publication date
CA2261469C (en) 2007-08-28
US5864403A (en) 1999-01-26

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