WO2008096590A1 - 光ヘッド装置および光学式情報記録再生装置 - Google Patents

光ヘッド装置および光学式情報記録再生装置 Download PDF

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Publication number
WO2008096590A1
WO2008096590A1 PCT/JP2008/050774 JP2008050774W WO2008096590A1 WO 2008096590 A1 WO2008096590 A1 WO 2008096590A1 JP 2008050774 W JP2008050774 W JP 2008050774W WO 2008096590 A1 WO2008096590 A1 WO 2008096590A1
Authority
WO
WIPO (PCT)
Prior art keywords
split type
optical
information recording
type information
disk
Prior art date
Application number
PCT/JP2008/050774
Other languages
English (en)
French (fr)
Inventor
Ryuichi Katayama
Original Assignee
Nec Corporation
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 Nec Corporation filed Critical Nec Corporation
Priority to JP2008557052A priority Critical patent/JP5168154B2/ja
Publication of WO2008096590A1 publication Critical patent/WO2008096590A1/ja

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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
    • G11B7/12—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
    • G11B7/12—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
    • G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
    • 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
    • G11B7/1367—Stepped phase plates
    • 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
    • G11B7/1395—Beam splitters or combiners

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

　ディスク６の対象層からの反射光が円筒レンズ７および凸レンズ８により形成する前側焦線より前の位置、後ろの位置に、それぞれ分割型波長板１０ａ、分割型偏光子１１ａが配置されている。分割型波長板１０ａは、それぞれを透過した光の偏光方向が互いに直交する２つの領域に分割されている。分割型偏光子１１ａはそれぞれが透過させる光の偏光方向が互いに直交している２つの領域に分割されている。ディスク６の対象層からの反射光は分割型偏光子１１ａを透過して光検出器１２へ入射するが、ディスク６の非対象層からの反射光は分割型偏光子１１ａで反射されて光検出器１２へ入射しない。
PCT/JP2008/050774 2007-02-08 2008-01-22 光ヘッド装置および光学式情報記録再生装置 WO2008096590A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008557052A JP5168154B2 (ja) 2007-02-08 2008-01-22 光ヘッド装置および光学式情報記録再生装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-029049 2007-02-08
JP2007029049 2007-02-08

Publications (1)

Publication Number Publication Date
WO2008096590A1 true WO2008096590A1 (ja) 2008-08-14

Family

ID=39681501

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/050774 WO2008096590A1 (ja) 2007-02-08 2008-01-22 光ヘッド装置および光学式情報記録再生装置

Country Status (2)

Country Link
JP (1) JP5168154B2 (ja)
WO (1) WO2008096590A1 (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009301644A (ja) * 2008-06-13 2009-12-24 Hitachi Media Electoronics Co Ltd 光ピックアップ装置
JP2010186526A (ja) * 2009-02-13 2010-08-26 Asahi Glass Co Ltd 選択光学素子及び光ピックアップ装置
JP2010192044A (ja) * 2009-02-19 2010-09-02 Sanyo Electric Co Ltd 光ピックアップ装置
JP2013016242A (ja) * 2011-07-06 2013-01-24 Tdk Corp 光学ドライブ装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11242824A (ja) * 1998-02-25 1999-09-07 Pioneer Electron Corp 光学式ピックアップ
JP2006236578A (ja) * 1997-02-06 2006-09-07 Matsushita Electric Ind Co Ltd 光ヘッド装置及び光情報処理装置
JP2006252716A (ja) * 2005-03-14 2006-09-21 Ricoh Co Ltd 抽出光学系、光ピックアップ装置及び光ディスク装置
JP2006323926A (ja) * 2005-05-18 2006-11-30 Ricoh Co Ltd 記録再生装置
JP2007018603A (ja) * 2005-07-07 2007-01-25 Toshiba Corp 光ヘッド装置
WO2007043663A1 (ja) * 2005-10-14 2007-04-19 Matsushita Electric Industrial Co., Ltd. 光学ヘッド

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006236578A (ja) * 1997-02-06 2006-09-07 Matsushita Electric Ind Co Ltd 光ヘッド装置及び光情報処理装置
JPH11242824A (ja) * 1998-02-25 1999-09-07 Pioneer Electron Corp 光学式ピックアップ
JP2006252716A (ja) * 2005-03-14 2006-09-21 Ricoh Co Ltd 抽出光学系、光ピックアップ装置及び光ディスク装置
JP2006323926A (ja) * 2005-05-18 2006-11-30 Ricoh Co Ltd 記録再生装置
JP2007018603A (ja) * 2005-07-07 2007-01-25 Toshiba Corp 光ヘッド装置
WO2007043663A1 (ja) * 2005-10-14 2007-04-19 Matsushita Electric Industrial Co., Ltd. 光学ヘッド

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009301644A (ja) * 2008-06-13 2009-12-24 Hitachi Media Electoronics Co Ltd 光ピックアップ装置
JP2010186526A (ja) * 2009-02-13 2010-08-26 Asahi Glass Co Ltd 選択光学素子及び光ピックアップ装置
JP2010192044A (ja) * 2009-02-19 2010-09-02 Sanyo Electric Co Ltd 光ピックアップ装置
JP2013016242A (ja) * 2011-07-06 2013-01-24 Tdk Corp 光学ドライブ装置

Also Published As

Publication number Publication date
JPWO2008096590A1 (ja) 2010-05-20
JP5168154B2 (ja) 2013-03-21

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