WO2008108138A1 - 光ヘッド装置および光学式情報記録再生装置ならびに光学式情報記録再生方法 - Google Patents

光ヘッド装置および光学式情報記録再生装置ならびに光学式情報記録再生方法 Download PDF

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Publication number
WO2008108138A1
WO2008108138A1 PCT/JP2008/052131 JP2008052131W WO2008108138A1 WO 2008108138 A1 WO2008108138 A1 WO 2008108138A1 JP 2008052131 W JP2008052131 W JP 2008052131W WO 2008108138 A1 WO2008108138 A1 WO 2008108138A1
Authority
WO
WIPO (PCT)
Prior art keywords
disc
information recording
light
optical information
polarization direction
Prior art date
Application number
PCT/JP2008/052131
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 US12/529,782 priority Critical patent/US20100220577A1/en
Priority to JP2009502487A priority patent/JPWO2008108138A1/ja
Publication of WO2008108138A1 publication Critical patent/WO2008108138A1/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
    • G11B7/1365—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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD

Abstract

　ディスク９がＨＤ　ＤＶＤ規格の光記録媒体である場合、偏光方向切替素子４ａ、４ｂは入射光の偏光方向を変化させない。このとき、半導体レーザ１からの出射光は対物レンズ８ａでディスク９上に集光され、ディスク９からの反射光は光検出器１２で受光される。一方、ディスク９がＢＤ規格の光記録媒体である場合、偏光方向切替素子４ａ、４ｂは入射光の偏光方向を９０°変化させる。このとき、半導体レーザ１からの出射光は対物レンズ８ｂでディスク９上に集光され、ディスク９からの反射光は光検出器１２で受光される。液晶レンズ３ａ、液晶レンズ３ｂは、それぞれ往路、復路における球面収差を補正する。
PCT/JP2008/052131 2007-03-06 2008-02-08 光ヘッド装置および光学式情報記録再生装置ならびに光学式情報記録再生方法 WO2008108138A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/529,782 US20100220577A1 (en) 2007-03-06 2008-02-08 Optical head device, optical information recording/reproducing device, and optical information recording/reproducing method
JP2009502487A JPWO2008108138A1 (ja) 2007-03-06 2008-02-08 光ヘッド装置および光学式情報記録再生装置ならびに光学式情報記録再生方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-055263 2007-03-06
JP2007055263 2007-03-06

Publications (1)

Publication Number Publication Date
WO2008108138A1 true WO2008108138A1 (ja) 2008-09-12

Family

ID=39738035

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/052131 WO2008108138A1 (ja) 2007-03-06 2008-02-08 光ヘッド装置および光学式情報記録再生装置ならびに光学式情報記録再生方法

Country Status (3)

Country Link
US (1) US20100220577A1 (ja)
JP (1) JPWO2008108138A1 (ja)
WO (1) WO2008108138A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100019126A1 (en) * 2007-03-13 2010-01-28 Ryuichi Katayama Optical head device, optical information recording/reproducing device, and optical information recording/reproducing method thereof
CN105099598B (zh) * 2014-05-09 2018-07-13 华为技术有限公司 一种基于液晶光栅光开关

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1049975A (ja) * 1996-08-05 1998-02-20 Matsushita Electric Ind Co Ltd 光ディスク装置
JP2006085801A (ja) * 2004-09-15 2006-03-30 Asahi Glass Co Ltd 液晶レンズ素子および光ヘッド装置
WO2006112249A1 (ja) * 2005-04-15 2006-10-26 Pioneer Corporation 光ピックアップ装置及び情報記録再生装置
JP2007004875A (ja) * 2005-06-22 2007-01-11 Sony Corp 光ピックアップ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008081859A1 (ja) * 2006-12-29 2008-07-10 Panasonic Corporation 光ピックアップ、光ディスク装置、複合カップリングレンズ、複合プリズム、及び光情報機器
US8385169B2 (en) * 2006-12-29 2013-02-26 Panasonic Corporation Optical disc drive and optical information system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1049975A (ja) * 1996-08-05 1998-02-20 Matsushita Electric Ind Co Ltd 光ディスク装置
JP2006085801A (ja) * 2004-09-15 2006-03-30 Asahi Glass Co Ltd 液晶レンズ素子および光ヘッド装置
WO2006112249A1 (ja) * 2005-04-15 2006-10-26 Pioneer Corporation 光ピックアップ装置及び情報記録再生装置
JP2007004875A (ja) * 2005-06-22 2007-01-11 Sony Corp 光ピックアップ

Also Published As

Publication number Publication date
JPWO2008108138A1 (ja) 2010-06-10
US20100220577A1 (en) 2010-09-02

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