DE69113935D1 - Detektor zur Feststellung der Position eines Lichtpunkts und optischer Kopf. - Google Patents

Detektor zur Feststellung der Position eines Lichtpunkts und optischer Kopf.

Info

Publication number
DE69113935D1
DE69113935D1 DE69113935T DE69113935T DE69113935D1 DE 69113935 D1 DE69113935 D1 DE 69113935D1 DE 69113935 T DE69113935 T DE 69113935T DE 69113935 T DE69113935 T DE 69113935T DE 69113935 D1 DE69113935 D1 DE 69113935D1
Authority
DE
Germany
Prior art keywords
detector
determining
optical head
light spot
spot
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
DE69113935T
Other languages
English (en)
Other versions
DE69113935T2 (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 DE69113935D1 publication Critical patent/DE69113935D1/de
Publication of DE69113935T2 publication Critical patent/DE69113935T2/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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/094—Methods and circuits for servo offset compensation
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/10—Interchangeable mountings, e.g. for replacement of head without readjustment including interchangeable electrical adjuster boards
DE69113935T 1990-08-31 1991-08-20 Detektor zur Feststellung der Position eines Lichtpunkts und optischer Kopf. Expired - Fee Related DE69113935T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2231554A JPH04113523A (ja) 1990-08-31 1990-08-31 光スポット位置検出装置および光ピックアップ

Publications (2)

Publication Number Publication Date
DE69113935D1 true DE69113935D1 (de) 1995-11-23
DE69113935T2 DE69113935T2 (de) 1996-05-30

Family

ID=16925322

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69113935T Expired - Fee Related DE69113935T2 (de) 1990-08-31 1991-08-20 Detektor zur Feststellung der Position eines Lichtpunkts und optischer Kopf.

Country Status (4)

Country Link
US (1) US5255252A (de)
EP (1) EP0474021B1 (de)
JP (1) JPH04113523A (de)
DE (1) DE69113935T2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3092756B2 (ja) * 1992-07-24 2000-09-25 ソニー株式会社 光デイスク装置
JPH1064080A (ja) * 1996-08-21 1998-03-06 Pioneer Electron Corp 非点収差フォーカスエラー信号生成方法及び光ピックアップ装置
IT1294891B1 (it) * 1997-09-24 1999-04-23 Olivetti Canon Ind Spa Sistema di allineamento per testine multiple di stampa a colori a getto di inchiostro e relativa testina di stampa con rilevatore
US6292279B1 (en) * 1998-02-25 2001-09-18 Dai Nippon Printing Co., Ltd. Optical system for recording or replicating hologram
JP2007058911A (ja) 2005-08-22 2007-03-08 Funai Electric Co Ltd 光ディスク装置
CN113805244B (zh) * 2021-08-18 2023-05-16 湖北三江航天万峰科技发展有限公司 一种微型激光探测装置及其控制方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470377A (en) * 1966-11-04 1969-09-30 Texas Instruments Inc Two-axis automatic autocollimator
SE407976B (sv) * 1973-03-13 1979-04-30 Bofors Ab Forfarande och anordning for malfoljning
US4001494A (en) * 1974-11-01 1977-01-04 Zenith Radio Corporation Photoreceptor matrix for optical video playback system
JPS61276137A (ja) * 1985-05-30 1986-12-06 Fujitsu Ltd 光学ヘツドアクチユエ−タ
JPS6228938A (ja) * 1985-07-30 1987-02-06 Mitsubishi Electric Corp 光ピツクアツプ装置
JPH056575Y2 (de) * 1986-04-18 1993-02-19
JPS6479943A (en) * 1987-09-22 1989-03-24 Nippon Columbia Optical head device
JPH01204234A (ja) * 1988-02-08 1989-08-16 Canon Inc 光学的情報記録再生装置
JPH0266727A (ja) * 1988-08-31 1990-03-06 Toshiba Corp 電子機器装置
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
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

Also Published As

Publication number Publication date
EP0474021B1 (de) 1995-10-18
EP0474021A2 (de) 1992-03-11
JPH04113523A (ja) 1992-04-15
US5255252A (en) 1993-10-19
EP0474021A3 (en) 1992-12-30
DE69113935T2 (de) 1996-05-30

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: PATENTANWAELTE MUELLER & HOFFMANN, 81667 MUENCHEN

8339 Ceased/non-payment of the annual fee