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DE60034723D1 - Optische Verschiebungsdetektion - Google Patents

Optische Verschiebungsdetektion

Info

Publication number
DE60034723D1
DE60034723D1 DE60034723T DE60034723T DE60034723D1 DE 60034723 D1 DE60034723 D1 DE 60034723D1 DE 60034723 T DE60034723 T DE 60034723T DE 60034723 T DE60034723 T DE 60034723T DE 60034723 D1 DE60034723 D1 DE 60034723D1
Authority
DE
Germany
Prior art keywords
displacement detection
optical displacement
optical
detection
displacement
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.)
Expired - Lifetime
Application number
DE60034723T
Other languages
English (en)
Other versions
DE60034723T2 (de
Inventor
Barclay J Tullis
Mark T Smith
Larry Mccolloch
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.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Application granted granted Critical
Publication of DE60034723D1 publication Critical patent/DE60034723D1/de
Publication of DE60034723T2 publication Critical patent/DE60034723T2/de
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
    • G01D5/347—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
    • 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
    • G01D5/3473—Circular or rotary encoders

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)
DE60034723T 1999-03-08 2000-03-01 Optische Verschiebungsdetektion Expired - Lifetime DE60034723T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US264063 1999-03-08
US09/264,063 US6246050B1 (en) 1999-03-08 1999-03-08 Optical encoders using non-patterned targets

Publications (2)

Publication Number Publication Date
DE60034723D1 true DE60034723D1 (de) 2007-06-21
DE60034723T2 DE60034723T2 (de) 2007-12-06

Family

ID=23004408

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60034723T Expired - Lifetime DE60034723T2 (de) 1999-03-08 2000-03-01 Optische Verschiebungsdetektion

Country Status (4)

Country Link
US (1) US6246050B1 (de)
EP (1) EP1037020B1 (de)
JP (1) JP2000283795A (de)
DE (1) DE60034723T2 (de)

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JP6345782B2 (ja) 2013-08-09 2018-06-20 アップル インコーポレイテッド 電子デバイス用のタクタイルスイッチ
JP5999584B2 (ja) * 2013-11-05 2016-09-28 株式会社安川電機 エンコーダ、エンコーダ付きモータ、サーボシステム
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US10380445B2 (en) 2014-03-13 2019-08-13 Pixart Imaging Inc. Optical encoder capable of identifying absolute positions and operating method thereof
US10929699B2 (en) * 2014-03-13 2021-02-23 Pixart Imaging Inc. Optical encoder capable of identifying absolute positions
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US10210412B2 (en) 2014-03-13 2019-02-19 Pixart Imaging Inc. Optical encoder capable of identifying absolute positions and operating method thereof
US9797752B1 (en) 2014-07-16 2017-10-24 Apple Inc. Optical encoder with axially aligned sensor
US10190891B1 (en) 2014-07-16 2019-01-29 Apple Inc. Optical encoder for detecting rotational and axial movement
US9797753B1 (en) 2014-08-27 2017-10-24 Apple Inc. Spatial phase estimation for optical encoders
US10066970B2 (en) 2014-08-27 2018-09-04 Apple Inc. Dynamic range control for optical encoders
KR102130259B1 (ko) 2014-09-02 2020-07-03 애플 인크. 웨어러블 전자 디바이스
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US11561515B2 (en) 2018-08-02 2023-01-24 Apple Inc. Crown for an electronic watch
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Also Published As

Publication number Publication date
US6246050B1 (en) 2001-06-12
JP2000283795A (ja) 2000-10-13
DE60034723T2 (de) 2007-12-06
EP1037020A3 (de) 2001-08-08
EP1037020A2 (de) 2000-09-20
EP1037020B1 (de) 2007-05-09

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, US

8364 No opposition during term of opposition