WO2006087843A1 - 光ピックアップ - Google Patents
光ピックアップInfo
- Publication number
- WO2006087843A1 WO2006087843A1 PCT/JP2005/017338 JP2005017338W WO2006087843A1 WO 2006087843 A1 WO2006087843 A1 WO 2006087843A1 JP 2005017338 W JP2005017338 W JP 2005017338W WO 2006087843 A1 WO2006087843 A1 WO 2006087843A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sub
- beams
- optical element
- diffractive optical
- divided
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 118
- 230000000737 periodic effect Effects 0.000 claims description 40
- 239000011295 pitch Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 102100030677 Sphingosine-1-phosphate phosphatase 2 Human genes 0.000 description 10
- 101710168938 Sphingosine-1-phosphate phosphatase 2 Proteins 0.000 description 10
- ORQBXQOJMQIAOY-UHFFFAOYSA-N nobelium Chemical compound [No] ORQBXQOJMQIAOY-UHFFFAOYSA-N 0.000 description 10
- 239000004065 semiconductor Substances 0.000 description 10
- 102100030684 Sphingosine-1-phosphate phosphatase 1 Human genes 0.000 description 7
- 101710168942 Sphingosine-1-phosphate phosphatase 1 Proteins 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 101150063780 spp1 gene Proteins 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 1
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
- G11B7/0901—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 track following only
- G11B7/0903—Multi-beam tracking systems
-
- 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
- G11B7/12—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
- G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/660,101 US20080074966A1 (en) | 2005-02-15 | 2005-09-21 | Optical Pickup |
EP05785942A EP1860653A1 (en) | 2005-02-15 | 2005-09-21 | Optical pickup |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005037010A JP2006228260A (ja) | 2005-02-15 | 2005-02-15 | 光ピックアップ |
JP2005-037010 | 2005-02-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006087843A1 true WO2006087843A1 (ja) | 2006-08-24 |
Family
ID=36916257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/017338 WO2006087843A1 (ja) | 2005-02-15 | 2005-09-21 | 光ピックアップ |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080074966A1 (ja) |
EP (1) | EP1860653A1 (ja) |
JP (1) | JP2006228260A (ja) |
KR (1) | KR20070104208A (ja) |
CN (1) | CN1981332A (ja) |
TW (1) | TW200629259A (ja) |
WO (1) | WO2006087843A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4106072B1 (ja) * | 2006-12-18 | 2008-06-25 | 松下電器産業株式会社 | 光ピックアップ装置 |
EP2141699A1 (en) * | 2008-06-30 | 2010-01-06 | Deutsche Thomson OHG | Apparatus for reading from an optical recording medium |
WO2011141393A1 (en) * | 2010-05-11 | 2011-11-17 | Thomson Licensing | Apparatus comprising a pickup providing multiple beams |
JP2012079374A (ja) * | 2010-09-30 | 2012-04-19 | Sanyo Electric Co Ltd | 光ピックアップ装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63138625U (ja) * | 1987-03-04 | 1988-09-13 | ||
JPH07320287A (ja) * | 1994-05-24 | 1995-12-08 | Olympus Optical Co Ltd | 光ピックアップ装置 |
JPH11296879A (ja) * | 1998-04-02 | 1999-10-29 | Sony Corp | 光ディスク装置とその制御方法 |
JP2001250250A (ja) * | 1999-12-28 | 2001-09-14 | Sharp Corp | 光ピックアップ及びトラッキングサーボ方法 |
JP2003162831A (ja) * | 2001-11-27 | 2003-06-06 | Sharp Corp | 光ピックアップ装置 |
JP2005182938A (ja) * | 2003-12-22 | 2005-07-07 | Matsushita Electric Ind Co Ltd | 光ピックアップ装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3826082B2 (ja) * | 2002-08-23 | 2006-09-27 | シャープ株式会社 | 光ピックアップ装置 |
JP2004253111A (ja) * | 2003-01-31 | 2004-09-09 | Sharp Corp | 光ピックアップ装置 |
JP2004355790A (ja) * | 2003-05-08 | 2004-12-16 | Sharp Corp | ホログラム結合体およびその製造方法、ホログラムレーザユニットならびに光ピックアップ装置 |
JP3779705B2 (ja) * | 2003-08-13 | 2006-05-31 | Tdk株式会社 | 光ヘッド、ldモジュール、光記録再生装置及び光記録再生装置に用いる回折素子 |
-
2005
- 2005-02-15 JP JP2005037010A patent/JP2006228260A/ja not_active Withdrawn
- 2005-09-21 CN CNA2005800225409A patent/CN1981332A/zh active Pending
- 2005-09-21 US US11/660,101 patent/US20080074966A1/en not_active Abandoned
- 2005-09-21 WO PCT/JP2005/017338 patent/WO2006087843A1/ja not_active Application Discontinuation
- 2005-09-21 KR KR1020067026738A patent/KR20070104208A/ko not_active Application Discontinuation
- 2005-09-21 EP EP05785942A patent/EP1860653A1/en not_active Withdrawn
-
2006
- 2006-02-14 TW TW095104811A patent/TW200629259A/zh unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63138625U (ja) * | 1987-03-04 | 1988-09-13 | ||
JPH07320287A (ja) * | 1994-05-24 | 1995-12-08 | Olympus Optical Co Ltd | 光ピックアップ装置 |
JPH11296879A (ja) * | 1998-04-02 | 1999-10-29 | Sony Corp | 光ディスク装置とその制御方法 |
JP2001250250A (ja) * | 1999-12-28 | 2001-09-14 | Sharp Corp | 光ピックアップ及びトラッキングサーボ方法 |
JP2003162831A (ja) * | 2001-11-27 | 2003-06-06 | Sharp Corp | 光ピックアップ装置 |
JP2005182938A (ja) * | 2003-12-22 | 2005-07-07 | Matsushita Electric Ind Co Ltd | 光ピックアップ装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2006228260A (ja) | 2006-08-31 |
US20080074966A1 (en) | 2008-03-27 |
EP1860653A1 (en) | 2007-11-28 |
CN1981332A (zh) | 2007-06-13 |
KR20070104208A (ko) | 2007-10-25 |
TW200629259A (en) | 2006-08-16 |
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