ATE431957T1 - Servoabzweig eines optischen plattenlaufwerkes mit schaltbarer membran und vorrichtung zur strahlablenkungen sowie verfahren zur messung von strahlenlandung und sphärischer aberration - Google Patents
Servoabzweig eines optischen plattenlaufwerkes mit schaltbarer membran und vorrichtung zur strahlablenkungen sowie verfahren zur messung von strahlenlandung und sphärischer aberrationInfo
- Publication number
- ATE431957T1 ATE431957T1 AT05784946T AT05784946T ATE431957T1 AT E431957 T1 ATE431957 T1 AT E431957T1 AT 05784946 T AT05784946 T AT 05784946T AT 05784946 T AT05784946 T AT 05784946T AT E431957 T1 ATE431957 T1 AT E431957T1
- Authority
- AT
- Austria
- Prior art keywords
- spherical aberration
- optical disk
- disk drive
- detection means
- measuring beam
- Prior art date
Links
- 230000004075 alteration Effects 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 230000003287 optical effect Effects 0.000 title abstract 2
- 239000012528 membrane Substances 0.000 title 1
- 238000001514 detection method Methods 0.000 abstract 3
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
- G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
-
- 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
- G11B7/1353—Diffractive elements, e.g. holograms or gratings
-
- 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
-
- 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
- G11B7/0948—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 detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
-
- 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
- G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
- G11B7/1369—Active plates, e.g. liquid crystal panels or electrostrictive elements
-
- 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
- G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
- G11B7/13925—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means
- G11B7/13927—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means during transducing, e.g. to correct for variation of the spherical aberration due to disc tilt or irregularities in the cover layer thickness
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
- Length Measuring Devices By Optical Means (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04104678 | 2004-09-27 | ||
| PCT/IB2005/053092 WO2006035362A2 (en) | 2004-09-27 | 2005-09-20 | Servo branch of optical disc drive comprising a switchable diaphragm and a device for beam deflection, and methods for measuring beam landing and spherical aberration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE431957T1 true ATE431957T1 (de) | 2009-06-15 |
Family
ID=35643913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT05784946T ATE431957T1 (de) | 2004-09-27 | 2005-09-20 | Servoabzweig eines optischen plattenlaufwerkes mit schaltbarer membran und vorrichtung zur strahlablenkungen sowie verfahren zur messung von strahlenlandung und sphärischer aberration |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20070291598A1 (de) |
| EP (1) | EP1797554B1 (de) |
| JP (1) | JP2008515125A (de) |
| KR (1) | KR20070057989A (de) |
| CN (1) | CN101027721A (de) |
| AT (1) | ATE431957T1 (de) |
| DE (1) | DE602005014562D1 (de) |
| TW (1) | TW200625283A (de) |
| WO (1) | WO2006035362A2 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9733466B2 (en) * | 2007-03-31 | 2017-08-15 | Koninklijke Philips N.V. | Optical biopsy device |
| US20100117827A1 (en) * | 2008-11-12 | 2010-05-13 | Mediatek Inc. | Method for current reduction for an analog circuit in a data read-out system |
| CN106840611A (zh) * | 2017-02-07 | 2017-06-13 | 长沙青波光电科技有限公司 | 简易评判光学系统优劣的方法 |
| EP3425443A1 (de) * | 2017-07-06 | 2019-01-09 | Nokia Technologies Oy | Kontaktlinse |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6120228A (ja) * | 1984-07-05 | 1986-01-29 | Sony Corp | 光学式変位検出装置 |
| JPS6337829A (ja) * | 1986-07-31 | 1988-02-18 | Brother Ind Ltd | トラツキングサ−ボ装置 |
| EP0630005B1 (de) * | 1993-06-21 | 2001-08-29 | Fujitsu Limited | Optisches Informationsaufzeichnungs-/wiedergabegerät |
| EP0951014A3 (de) * | 1998-04-14 | 2000-02-23 | Deutsche Thomson-Brandt Gmbh | Vorrichtung zum Lesen oder Beschreiben eines optischen Aufzeichnungsmediums |
| JP2004087089A (ja) * | 2002-06-27 | 2004-03-18 | Sharp Corp | 光ピックアップ |
| KR20050088124A (ko) * | 2002-12-18 | 2005-09-01 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 광 픽업장치 |
-
2005
- 2005-09-20 CN CNA2005800326005A patent/CN101027721A/zh active Pending
- 2005-09-20 JP JP2007533038A patent/JP2008515125A/ja active Pending
- 2005-09-20 KR KR1020077009579A patent/KR20070057989A/ko not_active Application Discontinuation
- 2005-09-20 AT AT05784946T patent/ATE431957T1/de not_active IP Right Cessation
- 2005-09-20 DE DE602005014562T patent/DE602005014562D1/de not_active Expired - Fee Related
- 2005-09-20 WO PCT/IB2005/053092 patent/WO2006035362A2/en active Application Filing
- 2005-09-20 EP EP05784946A patent/EP1797554B1/de not_active Not-in-force
- 2005-09-20 US US11/575,571 patent/US20070291598A1/en not_active Abandoned
- 2005-09-23 TW TW094133106A patent/TW200625283A/zh unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP1797554A2 (de) | 2007-06-20 |
| DE602005014562D1 (de) | 2009-07-02 |
| CN101027721A (zh) | 2007-08-29 |
| WO2006035362A2 (en) | 2006-04-06 |
| WO2006035362A3 (en) | 2006-09-21 |
| TW200625283A (en) | 2006-07-16 |
| US20070291598A1 (en) | 2007-12-20 |
| JP2008515125A (ja) | 2008-05-08 |
| KR20070057989A (ko) | 2007-06-07 |
| EP1797554B1 (de) | 2009-05-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |