JP6408804B2 - 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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JP6408804B2
JP6408804B2 JP2014137473A JP2014137473A JP6408804B2 JP 6408804 B2 JP6408804 B2 JP 6408804B2 JP 2014137473 A JP2014137473 A JP 2014137473A JP 2014137473 A JP2014137473 A JP 2014137473A JP 6408804 B2 JP6408804 B2 JP 6408804B2
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signal
abnormality
unit
signals
combination
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Japanese (ja)
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JP2016014620A5 (enExample
JP2016014620A (ja
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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 JP2014137473A priority Critical patent/JP6408804B2/ja
Priority to EP15001886.9A priority patent/EP2963390B1/en
Priority to US14/754,895 priority patent/US9995603B2/en
Publication of JP2016014620A publication Critical patent/JP2016014620A/ja
Publication of JP2016014620A5 publication Critical patent/JP2016014620A5/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
    • 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
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/08—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
    • 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
    • G01D5/26—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
    • G01D5/347—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
    • G01D5/34746—Linear encoders

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
JP2014137473A 2014-07-03 2014-07-03 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 JP6408804B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2014137473A JP6408804B2 (ja) 2014-07-03 2014-07-03 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
EP15001886.9A EP2963390B1 (en) 2014-07-03 2015-06-25 Position detector, and lens apparatus and image pickup apparatus including the position detector
US14/754,895 US9995603B2 (en) 2014-07-03 2015-06-30 Position detector, and lens apparatus and image pickup apparatus including the position detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014137473A JP6408804B2 (ja) 2014-07-03 2014-07-03 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)

Publication Number Publication Date
JP2016014620A JP2016014620A (ja) 2016-01-28
JP2016014620A5 JP2016014620A5 (enExample) 2017-08-17
JP6408804B2 true JP6408804B2 (ja) 2018-10-17

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JP2014137473A Active JP6408804B2 (ja) 2014-07-03 2014-07-03 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

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Country Link
US (1) US9995603B2 (enExample)
EP (1) EP2963390B1 (enExample)
JP (1) JP6408804B2 (enExample)

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* 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
US10615796B2 (en) * 2016-07-29 2020-04-07 Qualcomm Incorporated Level shifter

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002039727A (ja) 2000-07-21 2002-02-06 Asahi Precision Co Ltd アブソリュートエンコーダを備えた測角装置
US6898744B1 (en) * 2001-11-01 2005-05-24 Louis J. Jannotta Apparatus and methods for monitoring encoder signals
JP5887064B2 (ja) * 2010-04-28 2016-03-16 株式会社ミツトヨ 光学式エンコーダ
US8493572B2 (en) * 2010-05-05 2013-07-23 Mitutoyo Corporation Optical encoder having contamination and defect resistant signal processing
JP5375796B2 (ja) * 2010-11-05 2013-12-25 株式会社デンソー 回転角検出装置、および、これを用いた電動パワーステアリング装置
JP5791340B2 (ja) * 2011-04-14 2015-10-07 キヤノン株式会社 エンコーダ
EP2600113B1 (de) * 2011-11-29 2018-01-10 SICK STEGMANN GmbH Verfahren und Vorrichtung zur Messung des Drehwinkels zweier relativ zueinander rotierender Objekte
JP5727958B2 (ja) * 2012-03-19 2015-06-03 旭化成エレクトロニクス株式会社 磁場計測装置の異常検出装置
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
JP6207208B2 (ja) * 2013-04-12 2017-10-04 キヤノン株式会社 位置検出手段

Also Published As

Publication number Publication date
US20160003644A1 (en) 2016-01-07
JP2016014620A (ja) 2016-01-28
EP2963390B1 (en) 2019-09-11
US9995603B2 (en) 2018-06-12
EP2963390A1 (en) 2016-01-06

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