DE69016303T2 - Fokusjustierendes System für eine optische Platteneinheit. - Google Patents
Fokusjustierendes System für eine optische Platteneinheit.Info
- Publication number
- DE69016303T2 DE69016303T2 DE69016303T DE69016303T DE69016303T2 DE 69016303 T2 DE69016303 T2 DE 69016303T2 DE 69016303 T DE69016303 T DE 69016303T DE 69016303 T DE69016303 T DE 69016303T DE 69016303 T2 DE69016303 T2 DE 69016303T2
- Authority
- DE
- Germany
- Prior art keywords
- optical disk
- disk unit
- adjusting system
- focus adjusting
- focus
- 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
-
- 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
- G11B7/09—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
- G11B7/0908—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 for focusing only
- G11B7/0909—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 for focusing only by astigmatic methods
-
- 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
- G11B7/0908—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 for focusing only
- G11B7/0916—Foucault or knife-edge methods
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1204517A JPH0369025A (ja) | 1989-08-07 | 1989-08-07 | 光ディスク装置の焦点調整方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69016303D1 DE69016303D1 (de) | 1995-03-09 |
DE69016303T2 true DE69016303T2 (de) | 1995-09-28 |
Family
ID=16491846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69016303T Expired - Fee Related DE69016303T2 (de) | 1989-08-07 | 1990-08-01 | Fokusjustierendes System für eine optische Platteneinheit. |
Country Status (4)
Country | Link |
---|---|
US (1) | US5142517A (de) |
EP (1) | EP0412716B1 (de) |
JP (1) | JPH0369025A (de) |
DE (1) | DE69016303T2 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0719381B2 (ja) * | 1989-10-04 | 1995-03-06 | 松下電器産業株式会社 | フォーカス引き込み方式 |
JP2820808B2 (ja) * | 1991-03-29 | 1998-11-05 | コニカ株式会社 | 光ディスク装置のフォーカス制御機構 |
US5711226A (en) * | 1992-09-11 | 1998-01-27 | Imperial Chemical Industries Plc | Printing method and apparatus |
US5939710A (en) * | 1996-09-30 | 1999-08-17 | Daewoo Electronics Co., Ltd. | Optical pickup system incorporating therein a beam splitter having a phase layer |
JP2910725B2 (ja) * | 1997-04-14 | 1999-06-23 | 日本電気株式会社 | 光ディスク記録システム用記録不良判定装置 |
EP0895228A3 (de) * | 1997-07-31 | 1999-11-24 | THOMSON multimedia S.A. | Spurfolgesystem für optische Speichermedien |
EP0916441A1 (de) * | 1997-11-14 | 1999-05-19 | Fujifilm Electronic Imaging Limited | System und Verfahren zur Fokusfeststellung |
AU2003204937B2 (en) * | 1998-03-16 | 2004-12-02 | Ge Healthcare Bio-Sciences Corp. | Confocal microscopy imaging system |
US20030036855A1 (en) * | 1998-03-16 | 2003-02-20 | Praelux Incorporated, A Corporation Of New Jersey | Method and apparatus for screening chemical compounds |
US6388788B1 (en) * | 1998-03-16 | 2002-05-14 | Praelux, Inc. | Method and apparatus for screening chemical compounds |
JP2002216369A (ja) * | 2001-01-19 | 2002-08-02 | Sanyo Electric Co Ltd | ディスク装置 |
CA2519917A1 (en) * | 2003-03-24 | 2004-10-07 | Koninklijke Philips Electronics N.V. | Optical disc having focus offset area |
FI20031143A0 (fi) | 2003-08-08 | 2003-08-08 | Wallac Oy | Optinen fokusointimenetelmä ja -järjestely |
US8481904B2 (en) * | 2011-01-07 | 2013-07-09 | Daniel R. Marshall | Autofocus system with stray light compensation |
US9234854B2 (en) * | 2013-03-15 | 2016-01-12 | International Business Machines Corporation | Single fiber noncritical-alignment wafer-scale optical testing |
WO2016146725A1 (en) * | 2015-03-17 | 2016-09-22 | Basf Se | Optical data reader |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS539123B2 (de) * | 1972-05-26 | 1978-04-04 | ||
JPS599086B2 (ja) * | 1980-08-20 | 1984-02-29 | 株式会社日立製作所 | 光学的情報再生装置 |
JPS57208642A (en) * | 1981-06-18 | 1982-12-21 | Toshiba Corp | Focus controller |
US4607157A (en) * | 1984-02-09 | 1986-08-19 | Xerox Corporation | Automatic focus offset correction system |
JPH0762913B2 (ja) * | 1984-08-17 | 1995-07-05 | 株式会社日立製作所 | 自動焦点制御方法 |
US4740679A (en) * | 1985-02-27 | 1988-04-26 | Olympus Optical Co., Ltd. | Disc focus servo-circuit with ordered reference level setting means |
US5077719A (en) * | 1987-08-28 | 1991-12-31 | Fujitsu Limited | Optical disk access system |
-
1989
- 1989-08-07 JP JP1204517A patent/JPH0369025A/ja active Pending
-
1990
- 1990-08-01 EP EP90308461A patent/EP0412716B1/de not_active Expired - Lifetime
- 1990-08-01 DE DE69016303T patent/DE69016303T2/de not_active Expired - Fee Related
- 1990-08-02 US US07/561,948 patent/US5142517A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69016303D1 (de) | 1995-03-09 |
EP0412716A3 (en) | 1992-01-29 |
JPH0369025A (ja) | 1991-03-25 |
US5142517A (en) | 1992-08-25 |
EP0412716A2 (de) | 1991-02-13 |
EP0412716B1 (de) | 1995-01-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69016054D1 (de) | Optische Platte. | |
DE3887795D1 (de) | Zugriffssystem für optische Platten. | |
DE69638052D1 (de) | Lesesystem für eine optische Platte | |
DE69020688D1 (de) | Optische Plattenaufzeichnungsvorrichtung. | |
DE69010594T2 (de) | Optische Verstärker. | |
DE69019437T2 (de) | Antriebseinheiten für optische Platte. | |
DE69125918T2 (de) | Kassette für eine optische Platte | |
DE68922154T2 (de) | Spursprungssteuerungsvorrichtung für eine optische Scheibenabtasteinheit. | |
DE69215832D1 (de) | Fokussierservogerät für eine optische Platte | |
DE69016303D1 (de) | Fokusjustierendes System für eine optische Platteneinheit. | |
DE69112936D1 (de) | Optische Platte. | |
DE69021091D1 (de) | Spurenzählvorrichtung für optische Scheiben. | |
DE68915630T2 (de) | Medium für optische Scheiben. | |
DE69112233D1 (de) | Optische Platte. | |
DE69023870D1 (de) | Spurfolgkreis für optische Scheibeeinheit. | |
DE69021484D1 (de) | Optische Verstärker-Photodetektor-Anordnung. | |
DE69022921T2 (de) | Sektorservoschablone für optische Platte. | |
DE69021338T2 (de) | Servoeinheit für optische Scheibe. | |
DE632441T1 (de) | Haltevorrichtung für optische Platte. | |
DE3883293T2 (de) | Kopfpositionierungseinrichtung für optische Platteneinheit. | |
DE69114433T2 (de) | Optische Platteneinheit. | |
DE68921733T2 (de) | Antriebsanordnung für eine optische Abtasteinheit. | |
DE69019909D1 (de) | Fokussuchverfahren für optisches Plattengerät. | |
DE68912687D1 (de) | Antriebsvorrichtung für optische Bestandteile für eine optische Abtasteinheit. | |
DE69019566T2 (de) | Einrichtung zur Spurverfolgung für Gerät für optische Scheiben. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |