WO2008114549A1 - 光ピックアップ装置 - Google Patents

光ピックアップ装置 Download PDF

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Publication number
WO2008114549A1
WO2008114549A1 PCT/JP2008/052235 JP2008052235W WO2008114549A1 WO 2008114549 A1 WO2008114549 A1 WO 2008114549A1 JP 2008052235 W JP2008052235 W JP 2008052235W WO 2008114549 A1 WO2008114549 A1 WO 2008114549A1
Authority
WO
WIPO (PCT)
Prior art keywords
mirror
setting
light bundle
light
prevented
Prior art date
Application number
PCT/JP2008/052235
Other languages
English (en)
French (fr)
Inventor
Hidekazu Totsuka
Original Assignee
Konica Minolta Opto, Inc.
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 Konica Minolta Opto, Inc. filed Critical Konica Minolta Opto, Inc.
Priority to JP2009505098A priority Critical patent/JPWO2008114549A1/ja
Priority to CN200880008048XA priority patent/CN101632123B/zh
Publication of WO2008114549A1 publication Critical patent/WO2008114549A1/ja

Links

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
    • G11B7/1372—Lenses
    • G11B7/1374—Objective lenses
    • 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
    • G11B7/1362—Mirrors
    • 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

　異なる光情報記録媒体に対して情報記録及び／又は再生を行うために、耐久性を維持しながらも、光学系の共通化を図ることができる光ピックアップ装置を提供する。第１立ち上げミラーＭ１の方が第２立ち上げミラーＭ２よりも光源に近い。加えて、第１立ち上げミラーＭ１は、青紫色レーザ光である第１光束を反射するミラーであるため、第１光束は、第１立ち上げミラーＭ１で反射される。従って、ＤＶＤ用の第２対物レンズＯＢＪ２に第１光束が入射してしまうことを防止できる。万一、第１光束の一部が、第１立ち上げミラーＭ１を透過したとしても、第２立ち上げミラーＭ２を、第１光束を透過し第２光束を反射するようなミラーとすることで、僅かに漏れ出た第１光束が第２立ち上げミラーＭ２で反射する事を防止できるため、さらに、第２対物レンズＯＢＪ２に第１光束が入射する事を防止できる。
PCT/JP2008/052235 2007-03-16 2008-02-12 光ピックアップ装置 WO2008114549A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2009505098A JPWO2008114549A1 (ja) 2007-03-16 2008-02-12 光ピックアップ装置
CN200880008048XA CN101632123B (zh) 2007-03-16 2008-02-12 光拾取装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-068748 2007-03-16
JP2007068748 2007-03-16

Publications (1)

Publication Number Publication Date
WO2008114549A1 true WO2008114549A1 (ja) 2008-09-25

Family

ID=39765664

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/052235 WO2008114549A1 (ja) 2007-03-16 2008-02-12 光ピックアップ装置

Country Status (3)

Country Link
JP (1) JPWO2008114549A1 (ja)
CN (1) CN101632123B (ja)
WO (1) WO2008114549A1 (ja)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09306012A (ja) * 1996-05-17 1997-11-28 Matsushita Electric Ind Co Ltd 対物レンズ
JP2005327338A (ja) * 2004-05-12 2005-11-24 Sony Corp 光ピックアップ及びディスク状光学記録媒体記録再生装置
JP2006120306A (ja) * 2004-09-22 2006-05-11 Sony Corp 光ピックアップ及び光ディスク装置
WO2007004360A1 (ja) * 2005-07-01 2007-01-11 Pioneer Corporation 光ピックアップ装置及び情報記録再生装置
WO2007040235A1 (ja) * 2005-10-04 2007-04-12 Konica Minolta Opto, Inc. 対物レンズユニット及び光ピックアップ装置
JP2007317348A (ja) * 2006-04-26 2007-12-06 Ricoh Co Ltd 光ピックアップおよび光情報処理装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100397509C (zh) * 2004-09-22 2008-06-25 索尼株式会社 光拾取器和光盘装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09306012A (ja) * 1996-05-17 1997-11-28 Matsushita Electric Ind Co Ltd 対物レンズ
JP2005327338A (ja) * 2004-05-12 2005-11-24 Sony Corp 光ピックアップ及びディスク状光学記録媒体記録再生装置
JP2006120306A (ja) * 2004-09-22 2006-05-11 Sony Corp 光ピックアップ及び光ディスク装置
WO2007004360A1 (ja) * 2005-07-01 2007-01-11 Pioneer Corporation 光ピックアップ装置及び情報記録再生装置
WO2007040235A1 (ja) * 2005-10-04 2007-04-12 Konica Minolta Opto, Inc. 対物レンズユニット及び光ピックアップ装置
JP2007317348A (ja) * 2006-04-26 2007-12-06 Ricoh Co Ltd 光ピックアップおよび光情報処理装置

Also Published As

Publication number Publication date
CN101632123A (zh) 2010-01-20
JPWO2008114549A1 (ja) 2010-07-01
CN101632123B (zh) 2011-11-23

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