JP4412142B2 - 光ヘッド - Google Patents

光ヘッド Download PDF

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Publication number
JP4412142B2
JP4412142B2 JP2004299581A JP2004299581A JP4412142B2 JP 4412142 B2 JP4412142 B2 JP 4412142B2 JP 2004299581 A JP2004299581 A JP 2004299581A JP 2004299581 A JP2004299581 A JP 2004299581A JP 4412142 B2 JP4412142 B2 JP 4412142B2
Authority
JP
Japan
Prior art keywords
light beam
light
optical
light source
optical head
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.)
Expired - Fee Related
Application number
JP2004299581A
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English (en)
Japanese (ja)
Other versions
JP2005203074A5 (enExample
JP2005203074A (ja
Inventor
禎一郎 岡
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.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Priority to JP2004299581A priority Critical patent/JP4412142B2/ja
Priority to TW093138880A priority patent/TWI300560B/zh
Priority to US11/013,382 priority patent/US7569801B2/en
Priority to CNB2004101020032A priority patent/CN100370528C/zh
Publication of JP2005203074A publication Critical patent/JP2005203074A/ja
Publication of JP2005203074A5 publication Critical patent/JP2005203074A5/ja
Application granted granted Critical
Publication of JP4412142B2 publication Critical patent/JP4412142B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • G11B7/1263—Power control during transducing, e.g. by monitoring
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
JP2004299581A 2003-12-19 2004-10-14 光ヘッド Expired - Fee Related JP4412142B2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2004299581A JP4412142B2 (ja) 2003-12-19 2004-10-14 光ヘッド
TW093138880A TWI300560B (en) 2003-12-19 2004-12-15 Optical pick-up head, optical reproducing apparatus and optical recording/reproducing apparatus
US11/013,382 US7569801B2 (en) 2003-12-19 2004-12-17 Optical head, optical reproducing apparatus, and optical recording and reproducing apparatus
CNB2004101020032A CN100370528C (zh) 2003-12-19 2004-12-17 光拾取头、光再生装置以及光记录再生装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003422298 2003-12-19
JP2004299581A JP4412142B2 (ja) 2003-12-19 2004-10-14 光ヘッド

Publications (3)

Publication Number Publication Date
JP2005203074A JP2005203074A (ja) 2005-07-28
JP2005203074A5 JP2005203074A5 (enExample) 2007-07-12
JP4412142B2 true JP4412142B2 (ja) 2010-02-10

Family

ID=34680669

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004299581A Expired - Fee Related JP4412142B2 (ja) 2003-12-19 2004-10-14 光ヘッド

Country Status (4)

Country Link
US (1) US7569801B2 (enExample)
JP (1) JP4412142B2 (enExample)
CN (1) CN100370528C (enExample)
TW (1) TWI300560B (enExample)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006065971A (ja) * 2004-08-27 2006-03-09 Mitsumi Electric Co Ltd 光ピックアップ
JP5336029B2 (ja) * 2005-06-14 2013-11-06 株式会社キーエンス 回帰反射型光電スイッチ
US8041167B2 (en) * 2007-11-09 2011-10-18 Draka Comteq, B.V. Optical-fiber loose tube cables
US8145026B2 (en) 2007-11-09 2012-03-27 Draka Comteq, B.V. Reduced-size flat drop cable
US8031997B2 (en) 2007-11-09 2011-10-04 Draka Comteq, B.V. Reduced-diameter, easy-access loose tube cable
US8081853B2 (en) 2007-11-09 2011-12-20 Draka Comteq, B.V. Single-fiber drop cables for MDU deployments
US8041168B2 (en) 2007-11-09 2011-10-18 Draka Comteq, B.V. Reduced-diameter ribbon cables with high-performance optical fiber
US8165439B2 (en) 2007-11-09 2012-04-24 Draka Comteq, B.V. ADSS cables with high-performance optical fiber
EP2206001B1 (en) 2007-11-09 2014-04-16 Draka Comteq B.V. Microbend- resistant optical fiber
US8467650B2 (en) * 2007-11-09 2013-06-18 Draka Comteq, B.V. High-fiber-density optical-fiber cable
JP2009238344A (ja) * 2008-03-28 2009-10-15 Sanyo Electric Co Ltd 光ピックアップ装置
CN102272635B (zh) 2008-11-07 2017-04-12 德拉克通信科技公司 直径缩小的光纤
CN103792764B (zh) * 2012-10-31 2016-02-10 中强光电股份有限公司 照明系统
CN108490632B (zh) * 2018-03-12 2020-01-10 Oppo广东移动通信有限公司 激光投射模组、深度相机和电子装置
CN112639447B (zh) * 2018-08-27 2023-10-13 西铁城时计株式会社 光检测模块以及光检测装置
JP7597996B2 (ja) 2020-05-26 2024-12-11 日亜化学工業株式会社 発光装置
US12224387B2 (en) 2020-12-24 2025-02-11 Nichia Corporation Light emitting device

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0782655B2 (ja) * 1983-04-28 1995-09-06 オリンパス光学工業株式会社 光ヘッド
NL8501665A (nl) * 1985-06-10 1987-01-02 Philips Nv Optische aftasteenheid met positie- en standdetektiestelsel voor een elektromagnetisch gelagerd objektief.
US4792674A (en) * 1986-07-31 1988-12-20 Pioneer Electronic Corporation Optical head assembly and element holder with positional adjustment
DE3938639A1 (de) * 1988-11-21 1990-05-23 Ricoh Kk Optische aufzeichnungs-/wiedergabeeinrichtung
JPH02265028A (ja) * 1989-04-06 1990-10-29 Mitsubishi Electric Corp 光記録再生装置
US5313332A (en) * 1990-11-16 1994-05-17 Applied Magnetics Corporation Flexure suspension for two axis actuator
US5264911A (en) * 1990-12-20 1993-11-23 Mitsubishi Electric Corporation Laser power measuring jig for optical disk unit
JP2555239B2 (ja) 1991-11-01 1996-11-20 株式会社日立製作所 光情報記録再生方法
JP2778353B2 (ja) * 1992-04-30 1998-07-23 日本電気株式会社 光ディスク装置
US6141301A (en) * 1994-01-21 2000-10-31 Lots Technology, Inc. Apparatus and method for dynamic tracking and focus in an optical tape system
JPH10501647A (ja) * 1995-03-29 1998-02-10 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ 放射線源、検出器及び格子を有する光学ユニットと当該光学ユニットを有する走査装置
KR100269710B1 (ko) * 1996-01-23 2000-10-16 윤종용 광출력장치 및 이를 채용한 광픽업장치
JPH10255314A (ja) * 1997-03-12 1998-09-25 Ricoh Co Ltd 光ピックアップ装置
US6674709B1 (en) * 1999-04-23 2004-01-06 Matsushita Electric Industrial Co., Ltd. Optical head apparatus
JP2001118281A (ja) 1999-10-14 2001-04-27 Hitachi Media Electoronics Co Ltd 光ヘッドおよび光情報記録装置
JP4095766B2 (ja) * 2000-10-20 2008-06-04 株式会社リコー 光学ユニットの組立調整装置
JP2003151167A (ja) 2001-11-14 2003-05-23 Hitachi Ltd 光ヘッドおよび光ディスク装置
JP2003228868A (ja) * 2002-01-30 2003-08-15 Toshiba Corp 光ヘッド装置及び光ディスク装置
JP2003257064A (ja) 2002-03-01 2003-09-12 Sharp Corp 光ピックアップ装置
JP2004071073A (ja) 2002-08-07 2004-03-04 Teac Corp 光ピックアップ装置
JP2004288336A (ja) * 2003-03-25 2004-10-14 Hitachi Ltd 光ヘッド

Also Published As

Publication number Publication date
US20050135219A1 (en) 2005-06-23
CN100370528C (zh) 2008-02-20
CN1629950A (zh) 2005-06-22
TW200522044A (en) 2005-07-01
US7569801B2 (en) 2009-08-04
TWI300560B (en) 2008-09-01
JP2005203074A (ja) 2005-07-28

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