DE69123899D1 - Optisches Gerät zum Detektieren der Position - Google Patents

Optisches Gerät zum Detektieren der Position

Info

Publication number
DE69123899D1
DE69123899D1 DE69123899T DE69123899T DE69123899D1 DE 69123899 D1 DE69123899 D1 DE 69123899D1 DE 69123899 T DE69123899 T DE 69123899T DE 69123899 T DE69123899 T DE 69123899T DE 69123899 D1 DE69123899 D1 DE 69123899D1
Authority
DE
Germany
Prior art keywords
detecting
optical device
optical
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 - Fee Related
Application number
DE69123899T
Other languages
English (en)
Other versions
DE69123899T2 (de
Inventor
Hiroshi Katayama
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of DE69123899D1 publication Critical patent/DE69123899D1/de
Publication of DE69123899T2 publication Critical patent/DE69123899T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
DE69123899T 1990-08-28 1991-08-27 Optisches Gerät zum Detektieren der Position Expired - Fee Related DE69123899T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2227621A JP2617237B2 (ja) 1990-08-28 1990-08-28 光スポット位置検出装置

Publications (2)

Publication Number Publication Date
DE69123899D1 true DE69123899D1 (de) 1997-02-13
DE69123899T2 DE69123899T2 (de) 1997-07-10

Family

ID=16863802

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69123899T Expired - Fee Related DE69123899T2 (de) 1990-08-28 1991-08-27 Optisches Gerät zum Detektieren der Position

Country Status (4)

Country Link
US (1) US5194919A (de)
EP (1) EP0473124B1 (de)
JP (1) JP2617237B2 (de)
DE (1) DE69123899T2 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4113842A1 (de) * 1991-04-27 1992-11-05 Deutsche Forsch Luft Raumfahrt Verfahren und einrichtung zur messung und bestimmung einer wegdifferenz in interferometern nach michelson
US5376785A (en) * 1992-10-02 1994-12-27 Chin; Philip K. Optical displacement sensor utilizing optical diffusion
US5486925A (en) * 1993-06-01 1996-01-23 Rohm Co., Ltd. Displacement sensing apparatus for a movable member
KR0141445B1 (ko) * 1993-06-10 1998-07-01 모리시타 요이찌 변이의 측정방법 및 측정장치
US5706140A (en) * 1993-09-06 1998-01-06 Kansei Corp. Optical distance measuring equipment
JPH07234105A (ja) * 1994-02-23 1995-09-05 Wacom Co Ltd 光点位置計測方法
JP3610648B2 (ja) * 1995-11-30 2005-01-19 ヤマハ株式会社 光センサ
US5812266A (en) * 1995-12-15 1998-09-22 Hewlett-Packard Company Non-contact position sensor
US5886787A (en) * 1995-12-15 1999-03-23 Hewlett-Packard Company Displacement sensor and method for producing target feature thereof
US5625182A (en) * 1995-12-21 1997-04-29 Honeywell Inc. Light sensor with position compensation accomplished by area distribution
US6459492B1 (en) 1997-03-14 2002-10-01 Agilent Technologies, Inc. Non-contact position sensor
US6015970A (en) * 1997-12-11 2000-01-18 Motorola, Inc. Switch assembly incorporating optical control function
US6496273B1 (en) * 1999-05-05 2002-12-17 Renishaw Plc Position determining apparatus for coordinate positioning machine
JP5947184B2 (ja) * 2005-03-30 2016-07-06 株式会社ニコン 位置検出方法、及び位置検出装置
CN117249759B (zh) * 2023-08-09 2024-04-23 盐城市巨能动力机械有限公司 一种应用于隧道管片钢模的端板合模检测方法及系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56161506U (de) * 1980-05-02 1981-12-01
JPS58154606A (ja) * 1982-03-10 1983-09-14 Toppan Printing Co Ltd 絵柄面積率測定装置
JPH0413637Y2 (de) * 1985-05-30 1992-03-30
JPS61276137A (ja) * 1985-05-30 1986-12-06 Fujitsu Ltd 光学ヘツドアクチユエ−タ
DE3683833D1 (de) * 1985-11-30 1992-03-19 Toshiba Kawasaki Kk Optischer kopf.
JPH0419454Y2 (de) * 1986-04-25 1992-05-01
DE3887762T2 (de) * 1987-03-17 1994-09-08 Matsushita Electric Ind Co Ltd Optischer Kopf.
JPS6479943A (en) * 1987-09-22 1989-03-24 Nippon Columbia Optical head device
JP2693530B2 (ja) * 1988-12-06 1997-12-24 オリンパス光学工業株式会社 光学式ピックアップ
JPH0778904B2 (ja) * 1989-01-27 1995-08-23 シャープ株式会社 光ピックアップ装置
JP2737998B2 (ja) * 1989-03-31 1998-04-08 ソニー株式会社 対物レンズ位置検出装置
US5079432A (en) * 1990-06-25 1992-01-07 Ampex Corporation Method and apparatus for measuring the displacement of an automatic scan tracking head

Also Published As

Publication number Publication date
JPH04109103A (ja) 1992-04-10
US5194919A (en) 1993-03-16
EP0473124B1 (de) 1997-01-02
EP0473124A1 (de) 1992-03-04
DE69123899T2 (de) 1997-07-10
JP2617237B2 (ja) 1997-06-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee