CA2025311A1 - Tete optique - Google Patents
Tete optiqueInfo
- Publication number
- CA2025311A1 CA2025311A1 CA2025311A CA2025311A CA2025311A1 CA 2025311 A1 CA2025311 A1 CA 2025311A1 CA 2025311 A CA2025311 A CA 2025311A CA 2025311 A CA2025311 A CA 2025311A CA 2025311 A1 CA2025311 A1 CA 2025311A1
- Authority
- CA
- Canada
- Prior art keywords
- unit
- reflecting
- information light
- reflecting unit
- reflected
- 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
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
- G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10532—Heads
- G11B11/10541—Heads for reproducing
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP239009/89 | 1989-09-14 | ||
JP1239009A JP2902415B2 (ja) | 1989-09-14 | 1989-09-14 | 光学ヘッド |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2025311A1 true CA2025311A1 (fr) | 1991-03-15 |
CA2025311C CA2025311C (fr) | 1996-03-05 |
Family
ID=17038539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002025311A Expired - Fee Related CA2025311C (fr) | 1989-09-14 | 1990-09-13 | Tete optique |
Country Status (5)
Country | Link |
---|---|
US (1) | US5189655A (fr) |
EP (1) | EP0418087B1 (fr) |
JP (1) | JP2902415B2 (fr) |
CA (1) | CA2025311C (fr) |
DE (1) | DE69023585T2 (fr) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03116567A (ja) * | 1989-09-29 | 1991-05-17 | Canon Inc | 光磁気情報再生装置 |
DE69123523T2 (de) * | 1990-09-13 | 1997-04-24 | Canon Kk | Optischer Kopf für magnetooptisches Aufzeichnungs-/Wiedergabegerät |
US5244775A (en) | 1991-03-20 | 1993-09-14 | Hitachi, Ltd. | Method of manufacturing an optical disc |
JPH05109143A (ja) * | 1991-10-18 | 1993-04-30 | Sony Corp | 光学ピツクアツプ装置 |
JPH05114191A (ja) * | 1991-10-22 | 1993-05-07 | Canon Inc | 複数ビーム光ヘツド |
US5559639A (en) * | 1992-04-20 | 1996-09-24 | Asahi Kogaku Kogyo Kabushiki Kaisha | Beam receiving position adjusting device |
KR100230227B1 (ko) * | 1993-04-30 | 1999-11-15 | 윤종용 | 광픽업 |
DE4317190B4 (de) * | 1993-05-22 | 2005-12-22 | Deutsche Thomson-Brandt Gmbh | Fehlerratenverringerung |
KR950013702B1 (ko) * | 1993-07-15 | 1995-11-13 | 엘지전자주식회사 | 광자기 디스크의 광픽업 장치 |
JP3541893B2 (ja) * | 1993-08-06 | 2004-07-14 | ソニー株式会社 | 光磁気記録媒体再生装置 |
JP3449769B2 (ja) * | 1993-12-29 | 2003-09-22 | ソニー株式会社 | 光ピックアップ装置 |
US5495466A (en) * | 1994-01-10 | 1996-02-27 | Eastman Kodak Company | Write verification in an optical recording system by sensing mark formation while writing |
KR970000645B1 (ko) * | 1994-02-26 | 1997-01-16 | 엘지전자 주식회사 | 광픽업 시스템 |
KR100230233B1 (ko) * | 1994-06-30 | 1999-11-15 | 윤종용 | 포커스에러 검출장치 |
US5541906A (en) * | 1994-07-29 | 1996-07-30 | Olympus Optical Co., Ltd. | Optical head for magneto-optical record medium |
JP3374573B2 (ja) * | 1995-02-20 | 2003-02-04 | 松下電器産業株式会社 | 光ピックアップ及び光ガイド部材 |
DE19645110A1 (de) | 1996-11-01 | 1998-05-07 | Thomson Brandt Gmbh | Aufzeichnungs- oder Wiedergabegerät und Verfahren zum Erkennen eines Fokussierungszustands |
JP3626003B2 (ja) * | 1997-10-06 | 2005-03-02 | 富士通株式会社 | 光学的情報記憶装置 |
JP3382846B2 (ja) * | 1998-05-11 | 2003-03-04 | 日本電気株式会社 | 光ヘッド及び光ヘッドに於ける光源出力のモニター方法 |
JP2000021001A (ja) * | 1998-06-30 | 2000-01-21 | Pioneer Electron Corp | 光ピックアップ装置 |
JP3607836B2 (ja) * | 1999-03-31 | 2005-01-05 | シャープ株式会社 | 光ピックアップ装置 |
DE10214775A1 (de) * | 2002-04-03 | 2003-10-16 | Thomson Brandt Gmbh | Vorrichtung zur Korrektur von Signalmodulationen |
JP4251107B2 (ja) * | 2003-05-30 | 2009-04-08 | ソニー株式会社 | 光学ヘッド及びこれを用いた記録及び/又は再生装置 |
TWI276094B (en) * | 2004-03-12 | 2007-03-11 | Hon Hai Prec Ind Co Ltd | Optical reading/writing device |
TWI302307B (en) * | 2004-04-09 | 2008-10-21 | Hon Hai Prec Ind Co Ltd | Optical reading/writing system |
TWI302308B (en) * | 2004-04-23 | 2008-10-21 | Hon Hai Prec Ind Co Ltd | Optical reading/writing system |
TWI273586B (en) * | 2004-06-11 | 2007-02-11 | Hon Hai Prec Ind Co Ltd | Optical recording/reproducing system |
TWI260616B (en) * | 2004-07-09 | 2006-08-21 | Hon Hai Prec Ind Co Ltd | Optical reading/recording system |
TWI275084B (en) | 2004-07-09 | 2007-03-01 | Hon Hai Prec Ind Co Ltd | Optical reading/recording system |
TWI284895B (en) * | 2004-07-16 | 2007-08-01 | Hon Hai Prec Ind Co Ltd | Optical reading/recording system |
TWI329869B (en) * | 2004-11-05 | 2010-09-01 | Hon Hai Prec Ind Co Ltd | Semiconductor laser assembly and optical pickup device using the same |
TWI287222B (en) * | 2004-11-12 | 2007-09-21 | Hon Hai Prec Ind Co Ltd | Optical pickup device |
US8456637B2 (en) * | 2010-08-26 | 2013-06-04 | Mitutoyo Corporation | Multiple measuring point configuration for a chromatic point sensor |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6043240A (ja) * | 1983-08-19 | 1985-03-07 | Mitsubishi Electric Corp | 光学的信号読出装置 |
JPS60143453A (ja) * | 1983-12-28 | 1985-07-29 | Olympus Optical Co Ltd | 光学式情報記録再生用ピツクアツプ装置 |
JPS60246034A (ja) * | 1984-05-21 | 1985-12-05 | Matsushita Electric Ind Co Ltd | 光学ヘツド |
JPS61104348A (ja) * | 1984-10-22 | 1986-05-22 | Nec Corp | 光磁気ヘツド |
DE3665372D1 (en) * | 1985-05-31 | 1989-10-05 | Siemens Ag | Optical system for guiding the read-out beam in a magneto-optical memory |
CA1319194C (fr) * | 1986-07-28 | 1993-06-15 | Hideaki Satou | Detecteur d'erreurs a focalisation et dispositif de lecture de donnees optique incorporant ce detecteur |
JPH039134Y2 (fr) * | 1986-08-05 | 1991-03-07 | ||
JPS63113503A (ja) * | 1986-10-31 | 1988-05-18 | Toyo Commun Equip Co Ltd | ウオ−ラストンプリズム |
JPH0677351B2 (ja) * | 1986-11-15 | 1994-09-28 | ソニー株式会社 | 光学ピツクアツプ装置 |
US4951274A (en) * | 1987-01-23 | 1990-08-21 | Nec Corporation | Magneto-optical head capable of separating beams for reading recorded information and servo information by use of one optical element |
JPS63187440A (ja) * | 1987-01-29 | 1988-08-03 | Nec Corp | 光学ヘツド |
DE3802538A1 (de) * | 1987-01-28 | 1988-08-11 | Olympus Optical Co | Vorrichtung zum erfassen von fotomagnetischen signalen |
JP2618391B2 (ja) * | 1987-04-28 | 1997-06-11 | シャープ株式会社 | 光ピツクアツプ |
JPS6427057A (en) * | 1987-07-22 | 1989-01-30 | Nec Corp | Optical head device for magneto-optical recording |
US5060212A (en) * | 1987-08-17 | 1991-10-22 | Ricoh Company, Ltd. | Integrated optical pick-up device |
JPS6431513U (fr) * | 1987-08-17 | 1989-02-27 | ||
US5070494A (en) * | 1988-04-05 | 1991-12-03 | Ricoh Company, Ltd. | Optical pickup device with dual-mode drive mechanism |
-
1989
- 1989-09-14 JP JP1239009A patent/JP2902415B2/ja not_active Expired - Lifetime
-
1990
- 1990-09-11 US US07/580,830 patent/US5189655A/en not_active Expired - Lifetime
- 1990-09-13 DE DE69023585T patent/DE69023585T2/de not_active Expired - Fee Related
- 1990-09-13 CA CA002025311A patent/CA2025311C/fr not_active Expired - Fee Related
- 1990-09-13 EP EP90310047A patent/EP0418087B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2025311C (fr) | 1996-03-05 |
JP2902415B2 (ja) | 1999-06-07 |
DE69023585T2 (de) | 1996-05-15 |
JPH03102647A (ja) | 1991-04-30 |
EP0418087A3 (en) | 1992-01-22 |
US5189655A (en) | 1993-02-23 |
EP0418087A2 (fr) | 1991-03-20 |
EP0418087B1 (fr) | 1995-11-15 |
DE69023585D1 (de) | 1995-12-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |