JPS5265489A - Double refraction meter - Google Patents

Double refraction meter

Info

Publication number
JPS5265489A
JPS5265489A JP14171975A JP14171975A JPS5265489A JP S5265489 A JPS5265489 A JP S5265489A JP 14171975 A JP14171975 A JP 14171975A JP 14171975 A JP14171975 A JP 14171975A JP S5265489 A JPS5265489 A JP S5265489A
Authority
JP
Japan
Prior art keywords
double refraction
refraction meter
machines
double
meter
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
Application number
JP14171975A
Other languages
Japanese (ja)
Other versions
JPS5858019B2 (en
Inventor
Yasusuke Naruse
Hiroshi Yubi
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP14171975A priority Critical patent/JPS5858019B2/en
Publication of JPS5265489A publication Critical patent/JPS5265489A/en
Publication of JPS5858019B2 publication Critical patent/JPS5858019B2/en
Expired legal-status Critical Current

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:In a process for production of transparent sheets used for optical video disc devices, their double refractions are subsequently measured and calendering machines are automatically controlled based on the results of the measurement, whereby the pressure of the machines is regulated and sheets free from double refraction are obtained.
JP14171975A 1975-11-26 1975-11-26 Fukukutsusetsusokuteisouchi Expired JPS5858019B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14171975A JPS5858019B2 (en) 1975-11-26 1975-11-26 Fukukutsusetsusokuteisouchi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14171975A JPS5858019B2 (en) 1975-11-26 1975-11-26 Fukukutsusetsusokuteisouchi

Publications (2)

Publication Number Publication Date
JPS5265489A true JPS5265489A (en) 1977-05-30
JPS5858019B2 JPS5858019B2 (en) 1983-12-23

Family

ID=15298598

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14171975A Expired JPS5858019B2 (en) 1975-11-26 1975-11-26 Fukukutsusetsusokuteisouchi

Country Status (1)

Country Link
JP (1) JPS5858019B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57135329A (en) * 1981-02-16 1982-08-20 Masaki Yamamoto Polarization analyzing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57135329A (en) * 1981-02-16 1982-08-20 Masaki Yamamoto Polarization analyzing device
JPH0216458B2 (en) * 1981-02-16 1990-04-17 Masaki Yamamoto

Also Published As

Publication number Publication date
JPS5858019B2 (en) 1983-12-23

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