JPS60120522U - 光学式記録情報読取装置 - Google Patents

光学式記録情報読取装置

Info

Publication number
JPS60120522U
JPS60120522U JP1984007434U JP743484U JPS60120522U JP S60120522 U JPS60120522 U JP S60120522U JP 1984007434 U JP1984007434 U JP 1984007434U JP 743484 U JP743484 U JP 743484U JP S60120522 U JPS60120522 U JP S60120522U
Authority
JP
Japan
Prior art keywords
light
deviation
orthogonal relationship
receiving means
reading device
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.)
Granted
Application number
JP1984007434U
Other languages
English (en)
Other versions
JPH0433548Y2 (ja
Inventor
塚井　好之
Original Assignee
パイオニア株式会社
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 パイオニア株式会社 filed Critical パイオニア株式会社
Priority to JP1984007434U priority Critical patent/JPS60120522U/ja
Priority to GB08501593A priority patent/GB2156973B/en
Priority to US06/694,195 priority patent/US4636628A/en
Priority to DE19853502138 priority patent/DE3502138A1/de
Publication of JPS60120522U publication Critical patent/JPS60120522U/ja
Application granted granted Critical
Publication of JPH0433548Y2 publication Critical patent/JPH0433548Y2/ja
Granted 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
    • G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0956—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【図面の簡単な説明】
第１図は従来のチルト検出装置の概略を説明する図、第
２図は本願出願人により提案中のチルトサーボ系の概略
図、第３図は第２図の装置の光へッドユニツＩ・部の斜
視図、第４図〜第６図は第２図の装置のチルト検出部の
検出原理を説明する図、第７図は第２図の装置におけを
１次回折光の影響を説明する図、第８図〜第１３図は本
考案の実施例を夫々説明する図である。 主要部分の符号の説明、１１・・・・・・記録ディスク
、２３・・・・・・発光素子、２４　ａ、　　２４　ｂ
・・・・・・受光素子、３２，３３・・・・・・１次回
折光束、３５・・・・・・ハーフミラ−１３６・・・・
・・遮光板。 尾７０ 地ａ口 ０

Claims (2)

    【実用新案登録請求の範囲】
  1. （１）記録情報読取用光ビームの光軸と記録媒体の記録
    面との直交関係のずれを検出しこのずれに応じて前記光
    軸の傾斜をなす傾斜手段を制御して前記直交関係を維持
    するようにしたサーホ系を有する光学式記録情報読取装
    置であって、前記直交関係のずれを検出する手段は、発
    射光が前記記録面へ向けて照射された発光手段と、前記
    発射光の前記記録面による反射光を受光する受光手段と
    からなり、この反射回折光のうちほぼＯ次回折光のみが
    前記受光手段に受光されるように前記発光及び受光手段
    の位置関係を設定してなることを特徴とする装置。
  2. （２）前記発射光及び反射光が前記光ビームの収束用［
    ノンズを経ないような位置にこれら発光及び受光手段を
    設けたことを特徴とする実用新案登録請求の範囲第１項
    記載の装置。
JP1984007434U 1984-01-23 1984-01-23 光学式記録情報読取装置 Granted JPS60120522U (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1984007434U JPS60120522U (ja) 1984-01-23 1984-01-23 光学式記録情報読取装置
GB08501593A GB2156973B (en) 1984-01-23 1985-01-22 Apparatus for reading optically recorded data from disk
US06/694,195 US4636628A (en) 1984-01-23 1985-01-23 Optically recorded data reading apparatus with inclination controller
DE19853502138 DE3502138A1 (de) 1984-01-23 1985-01-23 Geraet zum ablesen optisch aufgezeichneter daten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984007434U JPS60120522U (ja) 1984-01-23 1984-01-23 光学式記録情報読取装置

Publications (2)

Publication Number Publication Date
JPS60120522U true JPS60120522U (ja) 1985-08-14
JPH0433548Y2 JPH0433548Y2 (ja) 1992-08-11

Family

ID=11665757

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984007434U Granted JPS60120522U (ja) 1984-01-23 1984-01-23 光学式記録情報読取装置

Country Status (4)

Country Link
US (1) US4636628A (ja)
JP (1) JPS60120522U (ja)
DE (1) DE3502138A1 (ja)
GB (1) GB2156973B (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0619845B2 (ja) * 1986-09-26 1994-03-16 ティアツク株式会社 デイスク変動状態検出装置
JP2565238B2 (ja) * 1987-10-15 1996-12-18 ソニー株式会社 光学式ディスク再生装置
US5124973A (en) * 1988-02-04 1992-06-23 Pioneer Electronic Corporation Tilt control mechanism
US5172361A (en) * 1989-06-01 1992-12-15 Sony Corporation Disc loading apparatus
US4978841A (en) * 1989-08-24 1990-12-18 Lasa Industries, Inc. Automatic leveling system and a method of leveling a workpiece based on focus detection
JP2606492B2 (ja) * 1991-07-23 1997-05-07 三菱電機株式会社 光学式記録再生装置
US5253236A (en) * 1991-10-03 1993-10-12 International Business Machines Corporation Optical beam focusing and tracking system for an optical disk information storage device
KR950007129U (ko) * 1993-08-17 1995-03-21 틸트 센서 출력에 의한 리프트 제어장치
US5696756A (en) * 1995-04-14 1997-12-09 Kabushiki Kaishia Toshiba Optical disk having an evaluation pattern for evaluating the optical disk
US6268912B1 (en) 1996-02-13 2001-07-31 Amada Electronics Company, Ltd. Angle detection method for bending machine, angle detection apparatus and angle sensor
DE19731545C1 (de) * 1997-07-23 1999-05-27 Basler Gmbh Vorrichtung und Verfahren zum optischen Erfassen der Verformung einer Fläche
JP2003317287A (ja) * 2002-04-18 2003-11-07 Ricoh Co Ltd チルト検出装置、光ピックアップおよび光ディスク装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57179954A (en) * 1981-04-27 1982-11-05 Sony Corp Optical type disc player

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5953612B2 (ja) * 1975-11-19 1984-12-26 カブシキガイシヤ フジテレビジヨン コウデンシキサイセイホウホウ
DE3002736C2 (de) * 1980-01-25 1982-08-12 Polygram Gmbh, 2000 Hamburg Anordnung zur Messung der vertikalen Verformung von Informationsträgern
JPS5799604A (en) * 1980-12-12 1982-06-21 Canon Inc Focus detector
JPS5814332A (ja) * 1981-07-16 1983-01-27 Mitsubishi Electric Corp 光学式情報再生装置
JPS58125242A (ja) * 1982-01-22 1983-07-26 Victor Co Of Japan Ltd 光学的情報信号再生装置のトラツキング誤差検出方式

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57179954A (en) * 1981-04-27 1982-11-05 Sony Corp Optical type disc player

Also Published As

Publication number Publication date
GB2156973B (en) 1987-03-25
DE3502138A1 (de) 1985-07-25
JPH0433548Y2 (ja) 1992-08-11
DE3502138C2 (ja) 1987-10-29
GB2156973A (en) 1985-10-16
GB8501593D0 (en) 1985-02-20
US4636628A (en) 1987-01-13

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