JPH01180615U - - Google Patents

Info

Publication number
JPH01180615U
JPH01180615U JP1988130027U JP13002788U JPH01180615U JP H01180615 U JPH01180615 U JP H01180615U JP 1988130027 U JP1988130027 U JP 1988130027U JP 13002788 U JP13002788 U JP 13002788U JP H01180615 U JPH01180615 U JP H01180615U
Authority
JP
Japan
Prior art keywords
grating
light
displacement detector
optical displacement
pitch
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
JP1988130027U
Other languages
English (en)
Japanese (ja)
Other versions
JPH07888Y2 (ja
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 filed Critical
Priority to JP1988130027U priority Critical patent/JPH07888Y2/ja
Priority to IN118/CAL/89A priority patent/IN171487B/en
Priority to US07/308,465 priority patent/US5026164A/en
Priority to DE3904898A priority patent/DE3904898C2/de
Priority to GB8903837A priority patent/GB2216256B/en
Priority to CN89101853.0A priority patent/CN1015407B/zh
Publication of JPH01180615U publication Critical patent/JPH01180615U/ja
Priority to US07/634,545 priority patent/US5067816A/en
Priority to GB9121237A priority patent/GB2247313B/en
Application granted granted Critical
Publication of JPH07888Y2 publication Critical patent/JPH07888Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01D5/36—Forming the light into pulses
    • G01D5/38—Forming the light into pulses by diffraction gratings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Length Measuring Devices By Optical Means (AREA)
JP1988130027U 1988-02-22 1988-10-04 光学式変位検出器 Expired - Lifetime JPH07888Y2 (ja)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP1988130027U JPH07888Y2 (ja) 1988-02-22 1988-10-04 光学式変位検出器
IN118/CAL/89A IN171487B (en]) 1988-02-22 1989-02-08
US07/308,465 US5026164A (en) 1988-02-22 1989-02-10 Optical encoder
DE3904898A DE3904898C2 (de) 1988-02-22 1989-02-17 Optischer Kodierer
GB8903837A GB2216256B (en) 1988-02-22 1989-02-20 Optical encoder.
CN89101853.0A CN1015407B (zh) 1988-02-22 1989-02-22 光学编码器
US07/634,545 US5067816A (en) 1988-02-22 1990-12-27 Optical encoder
GB9121237A GB2247313B (en) 1988-02-22 1991-10-04 Optical encoder.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP63-22031 1988-02-22
JP2203188 1988-02-22
JP1988130027U JPH07888Y2 (ja) 1988-02-22 1988-10-04 光学式変位検出器

Publications (2)

Publication Number Publication Date
JPH01180615U true JPH01180615U (en]) 1989-12-26
JPH07888Y2 JPH07888Y2 (ja) 1995-01-11

Family

ID=26359189

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988130027U Expired - Lifetime JPH07888Y2 (ja) 1988-02-22 1988-10-04 光学式変位検出器

Country Status (6)

Country Link
US (2) US5026164A (en])
JP (1) JPH07888Y2 (en])
CN (1) CN1015407B (en])
DE (1) DE3904898C2 (en])
GB (1) GB2216256B (en])
IN (1) IN171487B (en])

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0565056A2 (en) 1992-04-07 1993-10-13 Canon Kabushiki Kaisha Displacement information detection apparatus
JPH06160114A (ja) * 1992-11-26 1994-06-07 Ono Sokki Co Ltd エンコーダ
JPH06194124A (ja) * 1992-12-24 1994-07-15 Canon Inc 変位検出装置
JPH07318373A (ja) * 1994-05-23 1995-12-08 Ricoh Co Ltd エンコーダ装置
JPH08185238A (ja) * 1994-12-27 1996-07-16 Sigma Tec Kk 位置決め装置
JPH10132610A (ja) * 1996-11-05 1998-05-22 Mitsutoyo Corp 光学式エンコーダ
CN105973287A (zh) * 2016-05-04 2016-09-28 广东工业大学 一种多轨绝对光栅尺图像编码解码方法
JP2016218051A (ja) * 2015-05-19 2016-12-22 株式会社ミツトヨ 光学エンコーダの照明部に使用される光源アレイ
JP2017003447A (ja) * 2015-06-11 2017-01-05 株式会社ミツトヨ 光学式エンコーダ

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2239088B (en) * 1989-11-24 1994-05-25 Ricoh Kk Optical movement measuring method and apparatus
US5204524A (en) * 1991-03-22 1993-04-20 Mitutoyo Corporation Two-dimensional optical encoder with three gratings in each dimension
US5198663A (en) * 1991-04-03 1993-03-30 Mitutoyo Corporation Angular velocity sensor with displacement scale and sensor means
DE4206544A1 (de) * 1992-03-02 1993-09-09 Lpkf Cad Cam Systeme In Thueri Zweikoordinaten-wegmesssystem
DE4391632T1 (de) * 1992-04-09 1994-05-05 Mitutoyo Corp X-Y-Tischvorrichtung
JPH06194123A (ja) * 1992-12-24 1994-07-15 Canon Inc 変位検出装置
JP3005131B2 (ja) * 1992-12-28 2000-01-31 キヤノン株式会社 変位検出装置
US5652426A (en) * 1993-04-19 1997-07-29 Ricoh Company, Ltd. Optical encoder having high resolution
DE4323712C2 (de) * 1993-07-15 1997-12-11 Heidenhain Gmbh Dr Johannes Lichtelektrische Längen- oder Winkelmeßeinrichtung
JP2965444B2 (ja) * 1993-10-01 1999-10-18 株式会社ミツトヨ 定圧型測定機
JP3196459B2 (ja) * 1993-10-29 2001-08-06 キヤノン株式会社 ロータリーエンコーダ
JPH08178702A (ja) * 1994-12-27 1996-07-12 Canon Inc 光学式センサ
DE19527287C2 (de) * 1995-07-26 2000-06-29 Heidenhain Gmbh Dr Johannes Fotoelektrisches Weg- und Winkelmeßsystem zum Messen der Verschiebung zweier Objekte zueinander
JP3631551B2 (ja) * 1996-01-23 2005-03-23 株式会社ミツトヨ 光学式エンコーダ
US5955727A (en) * 1996-09-10 1999-09-21 Harmonic Drive Systems, Inc. Optical encoder having a shade layer made from photosensitive material
DE19726935B4 (de) * 1997-06-25 2014-06-12 Dr. Johannes Heidenhain Gmbh Optische Positionsmeßeinrichtung
DE19754595B4 (de) * 1997-12-10 2011-06-01 Dr. Johannes Heidenhain Gmbh Lichtelektrische Positionsmeßeinrichtung
EP1028309B1 (de) 1999-02-04 2003-04-16 Dr. Johannes Heidenhain GmbH Optische Positionsmesseinrichtung
DE19918101A1 (de) * 1999-04-22 2000-10-26 Heidenhain Gmbh Dr Johannes Optische Positionsmeßeinrichtung
US6279248B1 (en) 1999-09-22 2001-08-28 Central Purchasing, Inc. Digital measuring system having a multi-row encoder disk
JP4658452B2 (ja) * 2003-02-07 2011-03-23 オリンパス株式会社 光学式エンコーダ
CN100445698C (zh) * 2004-03-03 2008-12-24 三菱电机株式会社 光学式编码器
JP4880893B2 (ja) * 2004-11-08 2012-02-22 株式会社ミツトヨ 光電式エンコーダ
EP1701138B1 (en) * 2005-03-11 2016-02-17 Mitutoyo Corporation Photoelectric encoder
CN100346186C (zh) * 2005-09-13 2007-10-31 浙江大学 多模干涉型光学逻辑编码器
JP5113000B2 (ja) * 2008-09-19 2013-01-09 株式会社ミツトヨ 光電式エンコーダ
JP5562076B2 (ja) * 2010-03-10 2014-07-30 キヤノン株式会社 光学式エンコーダおよび変位計測装置
US8598509B2 (en) * 2010-03-11 2013-12-03 Stratasys, Inc. Optical encoder
DE102011082570A1 (de) * 2011-09-13 2013-03-14 Dr. Johannes Heidenhain Gmbh Rotatorische Positionsmesseinrichtung
US8997369B2 (en) 2012-05-15 2015-04-07 Mitutoyo Corporation Fast rotary drive for a handheld micrometer
US8739428B2 (en) 2012-07-03 2014-06-03 Mitutoyo Corporation Constant force spring actuator for a handheld micrometer
US9377282B2 (en) 2013-09-03 2016-06-28 Mitutoyo Corporation Method for validating a workpiece measurement in a dimensional metrology hand tool
CN105987712B (zh) * 2014-09-24 2019-12-06 原相科技股份有限公司 光学传感器及光学感测系统
US9482509B2 (en) 2014-12-12 2016-11-01 Mitutoyo Corporation Ergonomic micrometer including two modes of adjustment
CN104783762A (zh) * 2015-04-23 2015-07-22 天津大学 一种位置正弦波频率编码的成像光测量装置
CN105547162A (zh) * 2016-01-18 2016-05-04 梁磊 一种集成式称重卷尺测量工具及其测量方法
US11422292B1 (en) * 2018-06-10 2022-08-23 Apple Inc. Super-blazed diffractive optical elements with sub-wavelength structures
US11754767B1 (en) 2020-03-05 2023-09-12 Apple Inc. Display with overlaid waveguide
US12163813B2 (en) * 2020-05-08 2024-12-10 Canon Kabushiki Kaisha Optical encoder and control apparatus for receiving light that forms moire fringes from a grating pattern
WO2022197339A1 (en) 2021-03-17 2022-09-22 Apple Inc. Waveguide-based transmitters with adjustable lighting

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5531882A (en) * 1978-08-25 1980-03-06 Commissariat Energie Atomique Hydrophobic substrate and its manufacture
JPS6142416U (ja) * 1985-07-04 1986-03-19 株式会社ミツトヨ 光電型エンコ−ダ

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768911A (en) * 1971-08-17 1973-10-30 Keuffel & Esser Co Electro-optical incremental motion and position indicator
US3812352A (en) * 1972-08-28 1974-05-21 Itek Corp Encoder readout system
US3842261A (en) * 1973-12-20 1974-10-15 Itek Corp Optical encoder using diffraction imagery in a reflective mode
US4049965A (en) * 1975-03-06 1977-09-20 National Research Development Corporation Measurement apparatus
GB1516536A (en) * 1975-08-22 1978-07-05 Ferranti Ltd Measuring apparatus
DE2826213B2 (de) * 1978-06-15 1980-06-04 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut Photoelektrisches inkrementales Längen- und Winkelmeßsystem
JPS57157115A (en) * 1981-03-24 1982-09-28 Mitsutoyo Mfg Co Ltd Photoelectric type encoder
JPS57157118A (en) * 1981-03-24 1982-09-28 Mitsutoyo Mfg Co Ltd Photoelectric type displacement detecting device
GB8413955D0 (en) * 1984-05-31 1984-07-04 Pa Consulting Services Displacement measuring apparatus
GB8615196D0 (en) * 1986-06-21 1986-07-23 Renishaw Plc Opto-electronic scale reading apparatus
GB2195179B (en) * 1986-09-11 1991-05-15 Synergy Computer Graphics Registration system for a moving substrate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5531882A (en) * 1978-08-25 1980-03-06 Commissariat Energie Atomique Hydrophobic substrate and its manufacture
JPS6142416U (ja) * 1985-07-04 1986-03-19 株式会社ミツトヨ 光電型エンコ−ダ

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0565056A2 (en) 1992-04-07 1993-10-13 Canon Kabushiki Kaisha Displacement information detection apparatus
JPH06160114A (ja) * 1992-11-26 1994-06-07 Ono Sokki Co Ltd エンコーダ
JPH06194124A (ja) * 1992-12-24 1994-07-15 Canon Inc 変位検出装置
JPH07318373A (ja) * 1994-05-23 1995-12-08 Ricoh Co Ltd エンコーダ装置
JPH08185238A (ja) * 1994-12-27 1996-07-16 Sigma Tec Kk 位置決め装置
JPH10132610A (ja) * 1996-11-05 1998-05-22 Mitsutoyo Corp 光学式エンコーダ
JP2016218051A (ja) * 2015-05-19 2016-12-22 株式会社ミツトヨ 光学エンコーダの照明部に使用される光源アレイ
JP2017003447A (ja) * 2015-06-11 2017-01-05 株式会社ミツトヨ 光学式エンコーダ
CN105973287A (zh) * 2016-05-04 2016-09-28 广东工业大学 一种多轨绝对光栅尺图像编码解码方法

Also Published As

Publication number Publication date
DE3904898C2 (de) 1997-11-27
GB2216256B (en) 1992-08-19
CN1015407B (zh) 1992-02-05
CN1036633A (zh) 1989-10-25
US5067816A (en) 1991-11-26
US5026164A (en) 1991-06-25
GB2216256A (en) 1989-10-04
JPH07888Y2 (ja) 1995-01-11
GB8903837D0 (en) 1989-04-05
DE3904898A1 (de) 1989-08-31
IN171487B (en]) 1992-10-31

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