JP6533360B2 - 位置検出装置及びそれを有するレンズ装置及び撮影装置 - Google Patents

位置検出装置及びそれを有するレンズ装置及び撮影装置 Download PDF

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JP6533360B2
JP6533360B2 JP2013224848A JP2013224848A JP6533360B2 JP 6533360 B2 JP6533360 B2 JP 6533360B2 JP 2013224848 A JP2013224848 A JP 2013224848A JP 2013224848 A JP2013224848 A JP 2013224848A JP 6533360 B2 JP6533360 B2 JP 6533360B2
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signal
scale
periodic
signals
synchronization
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Japanese (ja)
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JP2015087194A (ja
JP2015087194A5 (enExample
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岳志 米澤
岳志 米澤
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Canon Inc
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Canon Inc
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Priority to JP2013224848A priority Critical patent/JP6533360B2/ja
Priority to DE102014015978.7A priority patent/DE102014015978B4/de
Priority to US14/527,914 priority patent/US9574910B2/en
Publication of JP2015087194A publication Critical patent/JP2015087194A/ja
Publication of JP2015087194A5 publication Critical patent/JP2015087194A5/ja
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    • 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
    • G01D5/34776—Absolute encoders with analogue or digital scales
    • 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
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
    • 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
    • G01D5/12—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 using electric or magnetic means
    • G01D5/244—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 using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/24457—Failure detection
    • G01D5/24466—Comparison of the error value to a threshold
    • 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
    • G01D5/12—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 using electric or magnetic means
    • G01D5/244—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 using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/245—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 using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
    • G01D5/2451—Incremental encoders
    • G01D5/2452—Incremental encoders incorporating two or more tracks having an (n, n+1, ...) relationship

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
JP2013224848A 2013-10-30 2013-10-30 位置検出装置及びそれを有するレンズ装置及び撮影装置 Active JP6533360B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2013224848A JP6533360B2 (ja) 2013-10-30 2013-10-30 位置検出装置及びそれを有するレンズ装置及び撮影装置
DE102014015978.7A DE102014015978B4 (de) 2013-10-30 2014-10-29 Positionsdetektiervorrichtung und diese enthaltende Linsenvorrichtung und Bildaufnahmevorrichtung
US14/527,914 US9574910B2 (en) 2013-10-30 2014-10-30 Position detecting apparatus, and lens apparatus and image pickup apparatus including the position detecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013224848A JP6533360B2 (ja) 2013-10-30 2013-10-30 位置検出装置及びそれを有するレンズ装置及び撮影装置

Publications (3)

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JP2015087194A JP2015087194A (ja) 2015-05-07
JP2015087194A5 JP2015087194A5 (enExample) 2016-12-15
JP6533360B2 true JP6533360B2 (ja) 2019-06-19

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US (1) US9574910B2 (enExample)
JP (1) JP6533360B2 (enExample)
DE (1) DE102014015978B4 (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6533360B2 (ja) * 2013-10-30 2019-06-19 キヤノン株式会社 位置検出装置及びそれを有するレンズ装置及び撮影装置
US10215596B2 (en) * 2015-01-16 2019-02-26 Canon Kabushiki Kaisha Position detection apparatus, lens apparatus, image pickup system, machine tool apparatus, exposure apparatus, position detection method, and non-transitory computer-readable storage medium which are capable of detecting reference position with high accuracy
JP2018036090A (ja) * 2016-08-30 2018-03-08 キヤノンプレシジョン株式会社 エンコーダおよびこれを備えた装置
JP7203584B2 (ja) * 2018-12-03 2023-01-13 キヤノンプレシジョン株式会社 アブソリュートロータリエンコーダ
US20200249055A1 (en) * 2019-02-06 2020-08-06 Canon Kabushiki Kaisha Position detection method, control method, manufacturing method, position detection apparatus, robot apparatus, optical device, and non-transitory recording medium
JP7350559B2 (ja) * 2019-08-08 2023-09-26 キヤノン株式会社 エンコーダ装置、駆動装置、ロボット装置、位置検出方法、物品の製造方法、プログラム、及び記録媒体
US11874144B2 (en) * 2020-07-28 2024-01-16 Li Lin Displacement measurement system

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US5260568A (en) * 1990-07-18 1993-11-09 Okuma Corporation Absolute position detector with diffraction grating windows and spot position detection
JP2593257B2 (ja) * 1991-08-12 1997-03-26 株式会社ミツトヨ 変位測定装置
JPH08304113A (ja) * 1995-05-09 1996-11-22 Yokogawa Electric Corp バーニア形アブソリュートエンコーダ
US6279248B1 (en) * 1999-09-22 2001-08-28 Central Purchasing, Inc. Digital measuring system having a multi-row encoder disk
JP2005241458A (ja) * 2004-02-26 2005-09-08 Canon Inc 記録装置及びエンコーダの劣化状態判定方法
US7432497B2 (en) * 2005-09-29 2008-10-07 Mitutoyo Corporation Absolute linear encoder
JP5286584B2 (ja) * 2007-06-19 2013-09-11 株式会社ミツトヨ 絶対位置測長型エンコーダ
JP5203024B2 (ja) * 2008-04-15 2013-06-05 株式会社ミツトヨ 絶対位置測長型エンコーダ
JP5011201B2 (ja) * 2008-05-01 2012-08-29 株式会社ミツトヨ 絶対位置測長型エンコーダ
JP5103267B2 (ja) * 2008-05-13 2012-12-19 株式会社ミツトヨ 絶対位置測長型エンコーダ
JP5161702B2 (ja) * 2008-08-25 2013-03-13 キヤノン株式会社 撮像装置、撮像システム、及び焦点検出方法
JP5155223B2 (ja) * 2009-03-17 2013-03-06 株式会社ミツトヨ アブソリュート型リニアエンコーダ、及び、その位置調整方法
JP5755009B2 (ja) * 2011-04-14 2015-07-29 キヤノン株式会社 エンコーダ
JP5829464B2 (ja) * 2011-09-01 2015-12-09 株式会社ミツトヨ 絶対測長型エンコーダ
JP6071181B2 (ja) * 2011-10-14 2017-02-01 キヤノン株式会社 エンコーダおよびこれを備えた装置
JP2013156120A (ja) * 2012-01-30 2013-08-15 Canon Inc 位置検出装置およびレンズ鏡筒
JP6150462B2 (ja) * 2012-05-02 2017-06-21 キヤノン株式会社 位置検出エンコーダおよびこれを用いた装置
JP5968062B2 (ja) * 2012-05-02 2016-08-10 キヤノン株式会社 位置検出エンコーダおよびこれを用いた装置
JP6168762B2 (ja) * 2012-12-14 2017-07-26 キヤノン株式会社 アブソリュートエンコーダ
JP6147038B2 (ja) * 2013-03-15 2017-06-14 キヤノン株式会社 位置検出装置、レンズ装置、撮像システム、および、工作装置
JP6422201B2 (ja) * 2013-03-28 2018-11-14 キヤノン株式会社 位置検出手段
JP6207208B2 (ja) * 2013-04-12 2017-10-04 キヤノン株式会社 位置検出手段
JP6114638B2 (ja) * 2013-06-07 2017-04-12 株式会社ミツトヨ エンコーダ
JP6253320B2 (ja) * 2013-09-13 2017-12-27 キヤノン株式会社 エンコーダおよびこれを用いた装置
JP6533360B2 (ja) * 2013-10-30 2019-06-19 キヤノン株式会社 位置検出装置及びそれを有するレンズ装置及び撮影装置
JP6334892B2 (ja) * 2013-10-30 2018-05-30 キヤノン株式会社 位置検出装置及びそれを有するレンズ装置及び撮影装置
JP6313571B2 (ja) * 2013-11-12 2018-04-18 キヤノン株式会社 位置検出装置及びそれを有するレンズ装置及び撮影装置
JP6408804B2 (ja) * 2014-07-03 2018-10-17 キヤノン株式会社 位置検出装置及びそれを有するレンズ装置及び撮影装置
JP6666019B2 (ja) * 2014-11-11 2020-03-13 キヤノン株式会社 位置検出装置、レンズ装置、撮像装置、および指令装置

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Publication number Publication date
JP2015087194A (ja) 2015-05-07
US20150115142A1 (en) 2015-04-30
DE102014015978B4 (de) 2021-04-29
DE102014015978A1 (de) 2015-04-30
US9574910B2 (en) 2017-02-21

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