JP2006228260A - 光ピックアップ - Google Patents

光ピックアップ Download PDF

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Publication number
JP2006228260A
JP2006228260A JP2005037010A JP2005037010A JP2006228260A JP 2006228260 A JP2006228260 A JP 2006228260A JP 2005037010 A JP2005037010 A JP 2005037010A JP 2005037010 A JP2005037010 A JP 2005037010A JP 2006228260 A JP2006228260 A JP 2006228260A
Authority
JP
Japan
Prior art keywords
sub
beams
optical element
diffractive optical
divided
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.)
Withdrawn
Application number
JP2005037010A
Other languages
English (en)
Japanese (ja)
Other versions
JP2006228260A5 (enExample
Inventor
Masayuki Ono
将之 小野
Masahiko Nishimoto
雅彦 西本
Tatsuya Nakamori
達哉 中森
Naoki Nakanishi
直樹 中西
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2005037010A priority Critical patent/JP2006228260A/ja
Priority to KR1020067026738A priority patent/KR20070104208A/ko
Priority to PCT/JP2005/017338 priority patent/WO2006087843A1/ja
Priority to CNA2005800225409A priority patent/CN1981332A/zh
Priority to US11/660,101 priority patent/US20080074966A1/en
Priority to EP05785942A priority patent/EP1860653A1/en
Priority to TW095104811A priority patent/TW200629259A/zh
Publication of JP2006228260A publication Critical patent/JP2006228260A/ja
Publication of JP2006228260A5 publication Critical patent/JP2006228260A5/ja
Withdrawn legal-status Critical Current

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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
    • 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
    • G11B7/12—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)
JP2005037010A 2005-02-15 2005-02-15 光ピックアップ Withdrawn JP2006228260A (ja)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2005037010A JP2006228260A (ja) 2005-02-15 2005-02-15 光ピックアップ
KR1020067026738A KR20070104208A (ko) 2005-02-15 2005-09-21 광픽업
PCT/JP2005/017338 WO2006087843A1 (ja) 2005-02-15 2005-09-21 光ピックアップ
CNA2005800225409A CN1981332A (zh) 2005-02-15 2005-09-21 拾光器
US11/660,101 US20080074966A1 (en) 2005-02-15 2005-09-21 Optical Pickup
EP05785942A EP1860653A1 (en) 2005-02-15 2005-09-21 Optical pickup
TW095104811A TW200629259A (en) 2005-02-15 2006-02-14 Optical pickup

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005037010A JP2006228260A (ja) 2005-02-15 2005-02-15 光ピックアップ

Publications (2)

Publication Number Publication Date
JP2006228260A true JP2006228260A (ja) 2006-08-31
JP2006228260A5 JP2006228260A5 (enExample) 2008-04-03

Family

ID=36916257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005037010A Withdrawn JP2006228260A (ja) 2005-02-15 2005-02-15 光ピックアップ

Country Status (7)

Country Link
US (1) US20080074966A1 (enExample)
EP (1) EP1860653A1 (enExample)
JP (1) JP2006228260A (enExample)
KR (1) KR20070104208A (enExample)
CN (1) CN1981332A (enExample)
TW (1) TW200629259A (enExample)
WO (1) WO2006087843A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102446517A (zh) * 2010-09-30 2012-05-09 三洋电机株式会社 光拾波器装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
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
US8630154B2 (en) * 2010-05-11 2014-01-14 Thomson Licensing, LLC Apparatus comprising a pickup providing multiple beams

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63138625U (enExample) * 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
JP3527705B2 (ja) * 1999-12-28 2004-05-17 シャープ株式会社 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
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
JP2005182938A (ja) * 2003-12-22 2005-07-07 Matsushita Electric Ind Co Ltd 光ピックアップ装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102446517A (zh) * 2010-09-30 2012-05-09 三洋电机株式会社 光拾波器装置

Also Published As

Publication number Publication date
US20080074966A1 (en) 2008-03-27
WO2006087843A1 (ja) 2006-08-24
CN1981332A (zh) 2007-06-13
EP1860653A1 (en) 2007-11-28
KR20070104208A (ko) 2007-10-25
TW200629259A (en) 2006-08-16

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