WO2008133106A1 - 光ピックアップ装置及びプリズム - Google Patents

光ピックアップ装置及びプリズム Download PDF

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Publication number
WO2008133106A1
WO2008133106A1 PCT/JP2008/057335 JP2008057335W WO2008133106A1 WO 2008133106 A1 WO2008133106 A1 WO 2008133106A1 JP 2008057335 W JP2008057335 W JP 2008057335W WO 2008133106 A1 WO2008133106 A1 WO 2008133106A1
Authority
WO
WIPO (PCT)
Prior art keywords
luminous flux
mirror
prism
reflected
pickup device
Prior art date
Application number
PCT/JP2008/057335
Other languages
English (en)
French (fr)
Inventor
Eiji Nomura
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 CN2008800120152A priority Critical patent/CN101657853B/zh
Priority to JP2009511807A priority patent/JP5339209B2/ja
Publication of WO2008133106A1 publication Critical patent/WO2008133106A1/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
    • G11B7/1356—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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)

Abstract

　異なる光情報記録媒体に対して情報の記録及び／又は再生を行うために、長期間安定した性能を発揮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及びプリズムを提供するために、第１光束を透過し、第２光束を反射する第２立ち上げミラーＭ２が第１光束を反射する第１立ち上げミラーＭ１よりも光源に近い配置となっている光学系において、第２立ち上げミラーＭ２で第１光束がわずかに反射されるため、第１光束の強度が高くなると、第２立ち上げミラーＭ２から反射される第１光束の強度も比例して高くなる。そこで、プリズムＰＳにフィルターＦを設け、第１光束が第２立ち上げミラーＭ２から反射されても、フィルターＦにより第２対物レンズへの第１光束の入射を抑制することで、第２対物レンズを従来からＤＶＤ／ＣＤ用対物レンズに用いられているポリオレフィン系のプラスチックで形成しても、その早期劣化を抑制することができる。
PCT/JP2008/057335 2007-04-19 2008-04-15 光ピックアップ装置及びプリズム WO2008133106A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2008800120152A CN101657853B (zh) 2007-04-19 2008-04-15 光拾取装置以及棱镜
JP2009511807A JP5339209B2 (ja) 2007-04-19 2008-04-15 光ピックアップ装置及びプリズム

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-109983 2007-04-19
JP2007109983 2007-04-19

Publications (1)

Publication Number Publication Date
WO2008133106A1 true WO2008133106A1 (ja) 2008-11-06

Family

ID=39925564

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/057335 WO2008133106A1 (ja) 2007-04-19 2008-04-15 光ピックアップ装置及びプリズム

Country Status (3)

Country Link
JP (1) JP5339209B2 (ja)
CN (1) CN101657853B (ja)
WO (1) WO2008133106A1 (ja)

Citations (4)

* 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
JP2005085293A (ja) * 2003-09-04 2005-03-31 Matsushita Electric Ind Co Ltd 光ピックアップ装置及び光ディスク装置
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
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005032286A (ja) * 2003-07-07 2005-02-03 Matsushita Electric Ind Co Ltd 光ピックアップ装置及び光ディスク装置
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
JP2005338679A (ja) * 2004-05-31 2005-12-08 Konica Minolta Opto Inc 固定方法、これを用いて作製した光学部品及び光ピックアップ装置
CN100397509C (zh) * 2004-09-22 2008-06-25 索尼株式会社 光拾取器和光盘装置
WO2006115161A1 (ja) * 2005-04-21 2006-11-02 Matsushita Electric Industrial Co., Ltd. 光ヘッド装置及び光情報装置
JP4525530B2 (ja) * 2005-08-29 2010-08-18 コニカミノルタオプト株式会社 対物レンズユニット及び光ピックアップ装置

Patent Citations (4)

* 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
JP2005085293A (ja) * 2003-09-04 2005-03-31 Matsushita Electric Ind Co Ltd 光ピックアップ装置及び光ディスク装置
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
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

Also Published As

Publication number Publication date
CN101657853A (zh) 2010-02-24
JP5339209B2 (ja) 2013-11-13
JPWO2008133106A1 (ja) 2010-07-22
CN101657853B (zh) 2011-09-14

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