JP2002188940A - 測長器 - Google Patents

測長器

Info

Publication number
JP2002188940A
JP2002188940A JP2000389916A JP2000389916A JP2002188940A JP 2002188940 A JP2002188940 A JP 2002188940A JP 2000389916 A JP2000389916 A JP 2000389916A JP 2000389916 A JP2000389916 A JP 2000389916A JP 2002188940 A JP2002188940 A JP 2002188940A
Authority
JP
Japan
Prior art keywords
liquid crystal
length measuring
measuring device
light
display panel
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
JP2000389916A
Other languages
English (en)
Japanese (ja)
Other versions
JP2002188940A5 (enExample
Inventor
Katsumi Yoshino
勝美 吉野
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP2000389916A priority Critical patent/JP2002188940A/ja
Priority to US10/034,987 priority patent/US20020097371A1/en
Publication of JP2002188940A publication Critical patent/JP2002188940A/ja
Publication of JP2002188940A5 publication Critical patent/JP2002188940A5/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
    • G01D5/34707—Scales; Discs, e.g. fixation, fabrication, compensation
    • G01D5/34715—Scale reading or illumination devices
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/37—Measurements
    • G05B2219/37125—Photosensor, as contactless analog position sensor, signal as function of position

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)
  • Liquid Crystal (AREA)
JP2000389916A 2000-12-22 2000-12-22 測長器 Pending JP2002188940A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2000389916A JP2002188940A (ja) 2000-12-22 2000-12-22 測長器
US10/034,987 US20020097371A1 (en) 2000-12-22 2001-12-26 Position sensing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000389916A JP2002188940A (ja) 2000-12-22 2000-12-22 測長器

Publications (2)

Publication Number Publication Date
JP2002188940A true JP2002188940A (ja) 2002-07-05
JP2002188940A5 JP2002188940A5 (enExample) 2008-02-21

Family

ID=18856370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000389916A Pending JP2002188940A (ja) 2000-12-22 2000-12-22 測長器

Country Status (2)

Country Link
US (1) US20020097371A1 (enExample)
JP (1) JP2002188940A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013195144A (ja) * 2012-03-16 2013-09-30 Nikon Corp エンコーダ、駆動装置、及び位置情報の検出方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4276270B2 (ja) * 2007-02-20 2009-06-10 ファナック株式会社 接触検知によるワークの基準位置設定機能を有する工作機械
US8358414B2 (en) * 2007-07-11 2013-01-22 Baker Hughes Incorporated Downhole sensors using manufactured anisotropic permittivity
CN105549233A (zh) * 2016-01-26 2016-05-04 武汉华星光电技术有限公司 精密测长机的校准片构造及其制作方法
CN109239955A (zh) * 2018-11-20 2019-01-18 惠科股份有限公司 一种显示面板的测量方法、系统及显示装置
JP7306883B2 (ja) * 2019-06-05 2023-07-11 株式会社ミツトヨ 座標測定機、及び座標測定プログラム

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07167677A (ja) * 1993-12-15 1995-07-04 Nippon Hikyumen Lens Kk エンコーダ
JPH11109303A (ja) * 1997-09-30 1999-04-23 Advantest Corp 光結合器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07167677A (ja) * 1993-12-15 1995-07-04 Nippon Hikyumen Lens Kk エンコーダ
JPH11109303A (ja) * 1997-09-30 1999-04-23 Advantest Corp 光結合器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013195144A (ja) * 2012-03-16 2013-09-30 Nikon Corp エンコーダ、駆動装置、及び位置情報の検出方法

Also Published As

Publication number Publication date
US20020097371A1 (en) 2002-07-25

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