JP2002032928A - 光ヘッド装置 - Google Patents

光ヘッド装置

Info

Publication number
JP2002032928A
JP2002032928A JP2000216815A JP2000216815A JP2002032928A JP 2002032928 A JP2002032928 A JP 2002032928A JP 2000216815 A JP2000216815 A JP 2000216815A JP 2000216815 A JP2000216815 A JP 2000216815A JP 2002032928 A JP2002032928 A JP 2002032928A
Authority
JP
Japan
Prior art keywords
light
wavelength
head device
optical head
emitting point
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.)
Pending
Application number
JP2000216815A
Other languages
English (en)
Japanese (ja)
Other versions
JP2002032928A5 (enExample
Inventor
Nobuo Takeshita
伸夫 竹下
Mitsuru Irie
満 入江
Toru Yoshihara
徹 吉原
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2000216815A priority Critical patent/JP2002032928A/ja
Priority to US09/727,521 priority patent/US6510119B2/en
Publication of JP2002032928A publication Critical patent/JP2002032928A/ja
Publication of JP2002032928A5 publication Critical patent/JP2002032928A5/ja
Pending legal-status Critical Current

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
    • G11B7/125—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
    • G11B7/127—Lasers; Multiple laser arrays
    • 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
    • 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)
  • Optical Elements Other Than Lenses (AREA)
JP2000216815A 2000-07-18 2000-07-18 光ヘッド装置 Pending JP2002032928A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2000216815A JP2002032928A (ja) 2000-07-18 2000-07-18 光ヘッド装置
US09/727,521 US6510119B2 (en) 2000-07-18 2000-12-04 Optical head device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000216815A JP2002032928A (ja) 2000-07-18 2000-07-18 光ヘッド装置

Publications (2)

Publication Number Publication Date
JP2002032928A true JP2002032928A (ja) 2002-01-31
JP2002032928A5 JP2002032928A5 (enExample) 2005-07-28

Family

ID=18712012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000216815A Pending JP2002032928A (ja) 2000-07-18 2000-07-18 光ヘッド装置

Country Status (2)

Country Link
US (1) US6510119B2 (enExample)
JP (1) JP2002032928A (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001256670A (ja) * 2000-03-10 2001-09-21 Sony Corp 光学ピックアップ装置及び光ディスク装置
US20040156302A1 (en) * 2003-01-07 2004-08-12 Matsushita Electric Industrial Co., Ltd. Optical head
KR100497382B1 (ko) * 2003-01-16 2005-06-23 삼성전자주식회사 호환형 광픽업장치
JP4644471B2 (ja) * 2004-11-10 2011-03-02 株式会社日立メディアエレクトロニクス 光ピックアップ及び光ディスクシステム
JP4752677B2 (ja) * 2006-08-24 2011-08-17 船井電機株式会社 光ピックアップ装置
CN101206884B (zh) 2006-12-21 2010-06-09 株式会社理光 光源单元、光检测单元、光学头、光驱动器和信息处理器
CN109555998B (zh) * 2018-12-07 2024-02-13 珠海博明视觉科技有限公司 一种平面同轴光源

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4942584A (en) 1988-06-22 1990-07-17 Morihiro Karaki Semiconductor laser apparatus driving system
JP3670091B2 (ja) 1996-10-04 2005-07-13 株式会社三協精機製作所 光ピックアップ
US6163409A (en) * 1996-10-30 2000-12-19 Kabushiki Kaisha Toshiba Optical head, optical component for use therein, method of manufacturing the same, and optical disk apparatus
US6195315B1 (en) * 1997-07-11 2001-02-27 Ricoh Company, Ltd. Optical disk apparatus compatible with different types of mediums
JPH11296893A (ja) 1998-04-14 1999-10-29 Ricoh Co Ltd 光ピックアップ

Also Published As

Publication number Publication date
US6510119B2 (en) 2003-01-21
US20020009040A1 (en) 2002-01-24

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