FR2770674B1 - Systeme optique pour unite de disque optique - Google Patents
Systeme optique pour unite de disque optiqueInfo
- Publication number
- FR2770674B1 FR2770674B1 FR9813577A FR9813577A FR2770674B1 FR 2770674 B1 FR2770674 B1 FR 2770674B1 FR 9813577 A FR9813577 A FR 9813577A FR 9813577 A FR9813577 A FR 9813577A FR 2770674 B1 FR2770674 B1 FR 2770674B1
- Authority
- FR
- France
- Prior art keywords
- optical
- disc unit
- optical system
- optical disc
- unit
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/0857—Arrangements for mechanically moving the whole head
- G11B7/08576—Swinging-arm positioners
-
- 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
- G11B7/122—Flying-type heads, e.g. analogous to Winchester type in magnetic recording
-
- 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
- G11B7/1362—Mirrors
-
- 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
- G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
-
- 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
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/10552—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base
- G11B11/10554—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base the transducers being disposed on the same side of the carrier
-
- 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
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/1058—Flying heads
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31608397A JPH11133344A (ja) | 1997-10-31 | 1997-10-31 | 光情報記録再生ヘッドにおけるレーザ光束の偏向方法 |
JP9316084A JPH11134686A (ja) | 1997-10-31 | 1997-10-31 | 光情報記録再生ヘッドにおけるレーザ光束の偏向方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2770674A1 FR2770674A1 (fr) | 1999-05-07 |
FR2770674B1 true FR2770674B1 (fr) | 2000-09-29 |
Family
ID=26568527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9813577A Expired - Fee Related FR2770674B1 (fr) | 1997-10-31 | 1998-10-29 | Systeme optique pour unite de disque optique |
Country Status (4)
Country | Link |
---|---|
US (1) | US6333910B1 (fr) |
DE (1) | DE19850110B4 (fr) |
FR (1) | FR2770674B1 (fr) |
GB (1) | GB2330939B (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001307355A (ja) * | 2000-02-16 | 2001-11-02 | Fujitsu Ltd | 光ディスク装置およびガルバノミラー |
JP2002190642A (ja) * | 2000-12-21 | 2002-07-05 | Ando Electric Co Ltd | 波長可変光源 |
GB2371818B (en) * | 2001-02-06 | 2004-09-22 | Ruff Pup Ltd | A casing scraper |
JP2003077154A (ja) * | 2001-04-25 | 2003-03-14 | Olympus Optical Co Ltd | ミラーの角度検出装置、光信号スイッチシステム及び光信号スイッチング方法 |
US6721260B2 (en) * | 2001-09-04 | 2004-04-13 | Hewlett-Packard Development Company L.P. | Electromagnetically controlled drive system and method |
US7151596B2 (en) * | 2002-07-05 | 2006-12-19 | Olympus Optical Co., Ltd. | Deflection angle detecting device |
JP2007172786A (ja) * | 2005-12-26 | 2007-07-05 | Pentax Corp | 光情報処理装置 |
Family Cites Families (61)
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US3244917A (en) | 1962-07-25 | 1966-04-05 | Gen Motors Corp | Dynamoelectric machine |
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DE2630381C2 (de) * | 1975-07-07 | 1983-05-26 | Pioneer Electronic Corp., Tokyo | Optischer Leser |
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US4206379A (en) | 1976-12-22 | 1980-06-03 | Citizen Watch Co., Ltd. | Permanent magnet rotor assembly for electro-mechanical transducer |
JPS5412833A (en) | 1977-06-30 | 1979-01-30 | Ricoh Co Ltd | Oscillating mirror driving device |
US4297713A (en) | 1978-06-03 | 1981-10-27 | Canon Kabushiki Kaisha | Laser recording apparatus |
JPS55131728A (en) | 1979-03-30 | 1980-10-13 | Agency Of Ind Science & Technol | Optical scanning device |
JPS5693722U (fr) | 1979-12-19 | 1981-07-25 | ||
NL8005633A (nl) | 1980-10-13 | 1982-05-03 | Philips Nv | Inrichting voor het uitlezen en/of inschrijven van een optisch uitleesbare informatiestruktuur. |
US4466088A (en) | 1981-12-21 | 1984-08-14 | Burroughs Corporation | Galvo position sensor for track selection in optical data disk system |
US4556964A (en) | 1981-12-21 | 1985-12-03 | Burroughs Corporation | Technique for monitoring galvo angle |
FR2523351B1 (fr) * | 1982-03-09 | 1989-07-13 | Thomson Csf | Tete optique dans un dispositif d'enregistrement-lecture d'un support d'information |
JPS62262017A (ja) * | 1986-05-08 | 1987-11-14 | Fujitsu Ltd | 光学ヘツドアクチユエ−タ |
DE3625642A1 (de) | 1986-07-29 | 1988-02-11 | Messerschmitt Boelkow Blohm | Zweifach gelagerter drehspiegel fuer optische systeme |
US4959824A (en) * | 1987-07-31 | 1990-09-25 | Minolta Camera Kabushiki Kaisha | Optical information record/pickup head assembly |
JP2772521B2 (ja) | 1987-11-04 | 1998-07-02 | 旭光学工業株式会社 | 投光反射型光検出器の光学系 |
US4891998A (en) | 1988-06-20 | 1990-01-09 | Santa Barbara Research Center | Motion conversion apparatus |
JP2736905B2 (ja) | 1988-11-14 | 1998-04-08 | 旭光学工業株式会社 | ローディング装置 |
US4958894A (en) | 1989-01-23 | 1990-09-25 | Metrologic Instruments, Inc. | Bouncing oscillating scanning device for laser scanning apparatus |
JPH02128216U (fr) | 1989-03-30 | 1990-10-23 | ||
US5151890A (en) | 1989-05-08 | 1992-09-29 | Seiko Epson Corporation | Optical system for optical memory device |
JPH03272028A (ja) | 1990-03-22 | 1991-12-03 | Nikon Corp | ミラー回動アクチュエータの回動角度検出機構 |
JP2861457B2 (ja) * | 1990-05-24 | 1999-02-24 | セイコーエプソン株式会社 | 光学式記録再生装置 |
US5420848A (en) * | 1990-08-02 | 1995-05-30 | Canon Kabushiki Kaisha | Optical system for optical information recording/reproducing apparatus having a galvano mirror |
US5220550A (en) * | 1990-08-10 | 1993-06-15 | Alps Electric Co., Ltd. | Optical beam system for optical disk drives |
GB2251514B (en) | 1990-10-23 | 1994-09-21 | Asahi Optical Co Ltd | Optical disk apparatus, and construction of optical disk |
US5371347A (en) | 1991-10-15 | 1994-12-06 | Gap Technologies, Incorporated | Electro-optical scanning system with gyrating scan head |
JP2536274Y2 (ja) * | 1990-12-17 | 1997-05-21 | 旭光学工業株式会社 | ガルバノミラー装置 |
US5125750A (en) | 1991-03-14 | 1992-06-30 | The Board Of Trustees Of The Leland Stanford Junior University | Optical recording system employing a solid immersion lens |
JPH05128561A (ja) * | 1991-10-30 | 1993-05-25 | Fujitsu Ltd | 光デイスク装置のトラツキングアクチユエータ |
JP2795571B2 (ja) * | 1992-01-07 | 1998-09-10 | シャープ株式会社 | 光ディスク装置 |
US5253245A (en) * | 1992-01-21 | 1993-10-12 | International Business Machines Corporation | Optical data storage tracking system |
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US6243350B1 (en) | 1996-05-01 | 2001-06-05 | Terastor Corporation | Optical storage systems with flying optical heads for near-field recording and reading |
EP0916133A1 (fr) | 1996-08-05 | 1999-05-19 | Terastor Corporation | Positionnement d'un faisceau optique |
JP2001524246A (ja) | 1997-04-29 | 2001-11-27 | テラスター・コーポレーション | 近接記録及び読出用浮動ヘッドを有する電気光学記憶システム |
US5844676A (en) | 1997-05-29 | 1998-12-01 | Quadrant Engineering, Inc. | Method and apparatus for measuring radial error of rotating encoded disks |
US5920140A (en) | 1997-06-27 | 1999-07-06 | Asahi Kogaku Kogyo Kabushiki Kaisha | Galvano mirror unit |
DE19743935A1 (de) * | 1997-10-04 | 1999-04-08 | Thomson Brandt Gmbh | Gerät zum Lesen oder Beschreiben optischer Aufzeichnungsträger |
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-
1998
- 1998-10-29 US US09/181,553 patent/US6333910B1/en not_active Expired - Fee Related
- 1998-10-29 FR FR9813577A patent/FR2770674B1/fr not_active Expired - Fee Related
- 1998-10-30 DE DE19850110A patent/DE19850110B4/de not_active Expired - Fee Related
- 1998-11-02 GB GB9823971A patent/GB2330939B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB9823971D0 (en) | 1998-12-30 |
FR2770674A1 (fr) | 1999-05-07 |
DE19850110A1 (de) | 1999-05-06 |
US6333910B1 (en) | 2001-12-25 |
GB2330939A (en) | 1999-05-05 |
DE19850110B4 (de) | 2004-08-26 |
GB2330939B (en) | 2001-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |