ATE211816T1 - Optoelektronischer drehkodierer - Google Patents

Optoelektronischer drehkodierer

Info

Publication number
ATE211816T1
ATE211816T1 AT96935168T AT96935168T ATE211816T1 AT E211816 T1 ATE211816 T1 AT E211816T1 AT 96935168 T AT96935168 T AT 96935168T AT 96935168 T AT96935168 T AT 96935168T AT E211816 T1 ATE211816 T1 AT E211816T1
Authority
AT
Austria
Prior art keywords
fringes
scale
resultant
rotary encoder
interference fringes
Prior art date
Application number
AT96935168T
Other languages
English (en)
Inventor
David Allan Wright
Geoff Mcfarland
Original Assignee
Renishaw Plc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10783312&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE211816(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Renishaw Plc filed Critical Renishaw Plc
Application granted granted Critical
Publication of ATE211816T1 publication Critical patent/ATE211816T1/de

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
    • 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)
  • Analogue/Digital Conversion (AREA)
AT96935168T 1995-11-02 1996-11-04 Optoelektronischer drehkodierer ATE211816T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9522491.1A GB9522491D0 (en) 1995-11-02 1995-11-02 Opto-electronic rotary encoder
PCT/GB1996/002699 WO1997016704A1 (en) 1995-11-02 1996-11-04 Opto-electronic rotary encoder

Publications (1)

Publication Number Publication Date
ATE211816T1 true ATE211816T1 (de) 2002-01-15

Family

ID=10783312

Family Applications (1)

Application Number Title Priority Date Filing Date
AT96935168T ATE211816T1 (de) 1995-11-02 1996-11-04 Optoelektronischer drehkodierer

Country Status (7)

Country Link
US (1) US5886352A (de)
EP (2) EP1114983A1 (de)
JP (1) JPH10512374A (de)
AT (1) ATE211816T1 (de)
DE (1) DE69618441T3 (de)
GB (1) GB9522491D0 (de)
WO (1) WO1997016704A1 (de)

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US6759648B2 (en) * 1997-08-15 2004-07-06 Bishop Innovation Limited Sensor for sensing absolute angular position of a rotatable body
ATE229169T1 (de) 1998-08-21 2002-12-15 Olivier M Parriaux Vorricthung zum messen von translation,rotation oder geschwindigkeit durch interferenz von lichtstrahlen
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
US6635863B1 (en) 1999-08-06 2003-10-21 Mitutoyo Corporation Optical encoder
DE19941318A1 (de) * 1999-08-31 2001-03-15 Heidenhain Gmbh Dr Johannes Optische Positionsmeßeinrichtung
DE19944004A1 (de) * 1999-09-14 2001-03-15 Kostal Leopold Gmbh & Co Kg Optoelektronischer Drehwinkelsensor
GB9928483D0 (en) * 1999-12-03 2000-02-02 Renishaw Plc Opto-electronic scale reading apparatus
US6512222B2 (en) * 2000-02-03 2003-01-28 Mitutoyo Corporation Displacement measuring apparatus
US7881896B2 (en) 2002-02-14 2011-02-01 Faro Technologies, Inc. Portable coordinate measurement machine with integrated line laser scanner
DE10323088A1 (de) * 2003-05-16 2004-12-02 Dr. Johannes Heidenhain Gmbh Positionsmesseinrichtung
TW593970B (en) * 2003-06-18 2004-06-21 Opto Tech Corp Position detection device
EP1519158B1 (de) * 2003-09-23 2010-08-11 Dr. Johannes Heidenhain GmbH Positionsmesseinrichtung
JP4754230B2 (ja) * 2005-02-02 2011-08-24 株式会社ミツトヨ 光電式エンコーダ
JP2008241243A (ja) * 2005-06-30 2008-10-09 Mitsubishi Electric Corp 光学式エンコーダ
GB0608812D0 (en) * 2006-05-04 2006-06-14 Renishaw Plc Rotary encoder apparatus
GB0621487D0 (en) * 2006-10-28 2006-12-06 Renishaw Plc Opto-electronic read head
DE102008046793A1 (de) * 2008-09-11 2010-03-18 Dr. Johannes Heidenhain Gmbh Optische Positionsmesseinrichtung
CN104024803B (zh) 2011-10-31 2017-02-15 日本精工株式会社 扭矩检测装置以及电动动力转向装置
GB201204066D0 (en) 2012-03-08 2012-04-18 Renishaw Plc Magnetic encoder apparatus
WO2014030177A1 (en) * 2012-08-22 2014-02-27 Inrim Istituto Nazionale Di Ricerca Metrologica Apparatus and method for the stabilization of linear encoders
US10243668B2 (en) 2016-04-27 2019-03-26 Industrial Technology Research Institute Positioning measurement device and the method thereof
CN108592961B (zh) * 2018-05-21 2021-02-12 深圳市英科达光电技术有限公司 一种游标多读数头全代码相加的高精度绝对式光电编码器

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JPS61178612A (ja) * 1985-02-04 1986-08-11 Kobe Steel Ltd 光電式ロ−タリエンコ−ダ
DE3616144A1 (de) * 1986-05-14 1987-11-19 Heidenhain Gmbh Dr Johannes Fotoelektrische messeinrichtung
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US5017776A (en) * 1989-03-10 1991-05-21 Hewlett-Packard Company Apparatus for and methods of optical encoding having spiral shaped light modulator
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US5155355A (en) * 1991-04-25 1992-10-13 Mitutoyo Corporation Photoelectric encoder having a grating substrate with integral light emitting elements
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DE4302313C2 (de) * 1993-01-28 1996-12-05 Heidenhain Gmbh Dr Johannes Mehrkoordinaten-Meßeinrichtung
DE59306689D1 (de) * 1993-08-07 1997-07-10 Heidenhain Gmbh Dr Johannes Vorrichtung zur Erzeugung oberwellenfreier periodischer Signale
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
GB2288015B (en) * 1994-03-31 1997-11-19 Mitutoyo Corp Optical encoder having a photodiode array that serves both for a light detector and an index scale
EP0693672B1 (de) * 1994-07-01 1996-12-18 Dr. Johannes Heidenhain GmbH Längen- oder Winkelmesseinrichtung

Also Published As

Publication number Publication date
DE69618441T2 (de) 2002-06-06
EP1114983A1 (de) 2001-07-11
DE69618441T3 (de) 2013-06-27
EP0801724B1 (de) 2002-01-09
WO1997016704A1 (en) 1997-05-09
EP0801724A1 (de) 1997-10-22
US5886352A (en) 1999-03-23
EP0801724B2 (de) 2013-03-06
DE69618441D1 (de) 2002-02-14
JPH10512374A (ja) 1998-11-24
GB9522491D0 (en) 1996-01-03

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee