HK1001025A1 - Method and apparatus for measuring thickness of birefringence layer - Google Patents

Method and apparatus for measuring thickness of birefringence layer

Info

Publication number
HK1001025A1
HK1001025A1 HK97102586A HK97102586A HK1001025A1 HK 1001025 A1 HK1001025 A1 HK 1001025A1 HK 97102586 A HK97102586 A HK 97102586A HK 97102586 A HK97102586 A HK 97102586A HK 1001025 A1 HK1001025 A1 HK 1001025A1
Authority
HK
Hong Kong
Prior art keywords
measuring thickness
birefringence layer
birefringence
layer
measuring
Prior art date
Application number
HK97102586A
Other languages
English (en)
Inventor
Masami Ito
Kanji Nishii
Kenji Takamoto
Atsushi Fukui
Original Assignee
Matsushita Electric Ind Co 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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of HK1001025A1 publication Critical patent/HK1001025A1/xx

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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Liquid Crystal (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
HK97102586A 1995-06-26 1997-12-23 Method and apparatus for measuring thickness of birefringence layer HK1001025A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15896795A JP3379287B2 (ja) 1995-06-26 1995-06-26 複屈折層ギャップ厚測定方法

Publications (1)

Publication Number Publication Date
HK1001025A1 true HK1001025A1 (en) 1998-05-15

Family

ID=15683289

Family Applications (1)

Application Number Title Priority Date Filing Date
HK97102586A HK1001025A1 (en) 1995-06-26 1997-12-23 Method and apparatus for measuring thickness of birefringence layer

Country Status (7)

Country Link
US (1) US5734472A (xx)
JP (1) JP3379287B2 (xx)
KR (1) KR100195397B1 (xx)
CN (1) CN1064757C (xx)
HK (1) HK1001025A1 (xx)
SG (1) SG67950A1 (xx)
TW (1) TW324057B (xx)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3858101B2 (ja) * 1997-05-01 2006-12-13 東セロ株式会社 延伸フィルム製造設備、及び製造方法
JPH11160198A (ja) 1997-12-02 1999-06-18 Nec Corp 液晶初期配向角測定方法及び液晶初期配向角測定装置
KR100612986B1 (ko) * 1998-06-05 2007-02-05 삼성전자주식회사 액정 표시 장치의 복굴절 위상차 및 셀 간격 측정 장치
KR100612173B1 (ko) * 1999-09-20 2006-08-14 오츠카 일렉트로닉스 가부시키가이샤 수직 배향 액정 패널의 셀 갭 측정 방법 및 장치
JP2002014347A (ja) * 2000-06-30 2002-01-18 Nec Corp 液晶表示装置の製造方法およびその製造装置
JP2003022564A (ja) * 2001-07-06 2003-01-24 Minebea Co Ltd 光ピックアップ装置
CN100340838C (zh) * 2005-09-28 2007-10-03 中国科学院上海光学精密机械研究所 测量双折射单轴晶体波片厚度的方法
CN100390500C (zh) * 2005-09-30 2008-05-28 财团法人工业技术研究院 液晶层尺寸量测系统及方法
TW200825389A (en) * 2006-12-01 2008-06-16 Optimax Tech Corp A method and a device for measuring axial polarizing angle of polarizer
JP5060388B2 (ja) * 2008-05-12 2012-10-31 王子計測機器株式会社 オンライン位相差測定装置
TWI383213B (zh) * 2008-09-15 2013-01-21 Chunghwa Picture Tubes Ltd 液晶顯示裝置之製造方法
JP2011209695A (ja) * 2010-03-10 2011-10-20 Asahi Glass Co Ltd ディスプレイ用前面板、ディスプレイ装置、ディスプレイ用前面板の製造方法、および製造装置
CN102538688A (zh) * 2011-12-26 2012-07-04 哈尔滨工业大学 红外宽波段透射式塑料薄膜厚度测量装置及测量方法
JP2015148572A (ja) * 2014-02-07 2015-08-20 株式会社ルケオ 歪検査器
JP6424364B2 (ja) * 2015-01-16 2018-11-21 株式会社国際電気通信基礎技術研究所 レーザレンジファインダ、３次元スキャナおよびレーザ光偏向装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4684256A (en) * 1983-12-30 1987-08-04 Nitto Electric Industrial Co., Ltd. Apparatus and method for continuously measuring polarizing property
JPH03269305A (ja) * 1990-03-20 1991-11-29 Casio Comput Co Ltd 液晶セルの液晶層厚測定方法
JPH04307312A (ja) * 1991-04-03 1992-10-29 Otsuka Denshi Kk 液晶セルのギャップ厚測定方法
JPH0518858A (ja) * 1991-07-12 1993-01-26 Casio Comput Co Ltd 薄膜の光学特性測定方法
JPH0534273A (ja) * 1991-07-29 1993-02-09 Kanzaki Paper Mfg Co Ltd レターデーシヨン測定装置
US5504581A (en) * 1992-02-29 1996-04-02 Kanzaki Paper Manufacturing Company, Ltd. Method and apparatus for measuring birefringence
US5434671A (en) * 1992-12-25 1995-07-18 Nec Corporation Birefringent member cell gap measurement method and instrument
US5532823A (en) * 1993-03-08 1996-07-02 Matsushita Electric Industrial Co., Ltd. Method of measuring optical characteristics of liquid crystal cells, measurement equipment therefor and method for manufacturing liquid crystal devices
CA2130873C (en) * 1993-08-27 1997-02-04 Dai Yui Method for assembling optical isolator and method for measuring isolation

Also Published As

Publication number Publication date
JP3379287B2 (ja) 2003-02-24
JPH095040A (ja) 1997-01-10
CN1064757C (zh) 2001-04-18
KR970002258A (ko) 1997-01-24
CN1155652A (zh) 1997-07-30
US5734472A (en) 1998-03-31
TW324057B (en) 1998-01-01
KR100195397B1 (ko) 1999-06-15
SG67950A1 (en) 1999-10-19

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20080626