JP2002230818A - 光ヘッド装置 - Google Patents

光ヘッド装置

Info

Publication number
JP2002230818A
JP2002230818A JP2001026339A JP2001026339A JP2002230818A JP 2002230818 A JP2002230818 A JP 2002230818A JP 2001026339 A JP2001026339 A JP 2001026339A JP 2001026339 A JP2001026339 A JP 2001026339A JP 2002230818 A JP2002230818 A JP 2002230818A
Authority
JP
Japan
Prior art keywords
light
optical
laser
recording medium
prism
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
JP2001026339A
Other languages
English (en)
Japanese (ja)
Other versions
JP2002230818A5 (enExample
Inventor
Katsushige Yanagisawa
克重 柳澤
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.)
Nidec Instruments Corp
Original Assignee
Sankyo Seiki Manufacturing Co Ltd
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 Sankyo Seiki Manufacturing Co Ltd filed Critical Sankyo Seiki Manufacturing Co Ltd
Priority to JP2001026339A priority Critical patent/JP2002230818A/ja
Priority to CNB021034451A priority patent/CN100421160C/zh
Priority to US10/061,244 priority patent/US6961298B2/en
Publication of JP2002230818A publication Critical patent/JP2002230818A/ja
Publication of JP2002230818A5 publication Critical patent/JP2002230818A5/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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • 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
    • G11B7/125—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
    • G11B7/1275—Two or more lasers having different wavelengths
    • 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
    • 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
    • G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
    • 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)
JP2001026339A 2001-02-02 2001-02-02 光ヘッド装置 Pending JP2002230818A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2001026339A JP2002230818A (ja) 2001-02-02 2001-02-02 光ヘッド装置
CNB021034451A CN100421160C (zh) 2001-02-02 2002-02-01 激光头装置
US10/061,244 US6961298B2 (en) 2001-02-02 2002-02-04 Optical head device having a plurality of optical elements with various transmission efficiencies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001026339A JP2002230818A (ja) 2001-02-02 2001-02-02 光ヘッド装置

Publications (2)

Publication Number Publication Date
JP2002230818A true JP2002230818A (ja) 2002-08-16
JP2002230818A5 JP2002230818A5 (enExample) 2005-06-23

Family

ID=18891172

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001026339A Pending JP2002230818A (ja) 2001-02-02 2001-02-02 光ヘッド装置

Country Status (3)

Country Link
US (1) US6961298B2 (enExample)
JP (1) JP2002230818A (enExample)
CN (1) CN100421160C (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011181166A (ja) * 2010-02-05 2011-09-15 Panasonic Corp 光ピックアップ装置
WO2012056827A1 (ja) * 2010-10-27 2012-05-03 コニカミノルタオプト株式会社 光ピックアップ装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006140751A (ja) * 2004-11-12 2006-06-01 Hitachi Ltd ディスクビデオカメラ
KR20080005299A (ko) * 2005-05-03 2008-01-10 코닌클리케 필립스 일렉트로닉스 엔.브이. 다중 방사빔 광학 주사장치
JP4787559B2 (ja) * 2005-07-26 2011-10-05 ルネサスエレクトロニクス株式会社 半導体装置およびその製造方法
JP2008299980A (ja) * 2007-06-01 2008-12-11 Hitachi Media Electoronics Co Ltd 光ピックアップ及び光ディスク装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10302295A (ja) * 1997-04-23 1998-11-13 Sankyo Seiki Mfg Co Ltd 光ピックアップ装置
US6195315B1 (en) * 1997-07-11 2001-02-27 Ricoh Company, Ltd. Optical disk apparatus compatible with different types of mediums
US6238063B1 (en) * 1998-04-27 2001-05-29 Nikon Corporation Illumination optical apparatus and projection exposure apparatus
US6426837B1 (en) * 1999-03-22 2002-07-30 Mems Optical, Inc. Diffractive selectively polarizing beam splitter and beam routing prisms produced thereby
AU3193800A (en) * 1999-05-18 2000-12-05 Nikon Corporation Exposure method, illuminating device, and exposure system
JP3858523B2 (ja) * 1999-07-27 2006-12-13 株式会社日立製作所 対物レンズ
US6563977B1 (en) * 2000-06-27 2003-05-13 Bayspec, Inc. Compact wavelength multiplexer-demultiplexer providing low polarization sensitivity
US6462873B1 (en) * 2000-07-14 2002-10-08 Univ Hong Kong Science & Techn Polarizing beam splitter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011181166A (ja) * 2010-02-05 2011-09-15 Panasonic Corp 光ピックアップ装置
WO2012056827A1 (ja) * 2010-10-27 2012-05-03 コニカミノルタオプト株式会社 光ピックアップ装置

Also Published As

Publication number Publication date
CN1373475A (zh) 2002-10-09
CN100421160C (zh) 2008-09-24
US20020105893A1 (en) 2002-08-08
US6961298B2 (en) 2005-11-01

Similar Documents

Publication Publication Date Title
US7050380B2 (en) Optical element, optical pickup unit, and optical disk drive unit
JP4412085B2 (ja) 光ピックアップ装置、記録及び／又は再生装置
US7672202B2 (en) Optical pickup apparatus
JP2001043559A (ja) 光ヘッド及び光ディスク装置
US8154962B2 (en) Optical pickup and optical information recording and reproducing device
WO2004003901A1 (ja) 光ピックアップ
JP4155166B2 (ja) 光ピックアップ装置
JP2000348376A (ja) 光ヘッド及び記録再生方法
JP2002230818A (ja) 光ヘッド装置
JP2001229570A (ja) 光ピックアップ装置及びレーザダイオードチップ
US20010040854A1 (en) Optical recording/pickup head compatible with compact disk-recordable (cd-r) and digital versatile disk (dvd) using polarization beam splitter
JP2002207110A (ja) 複合機能プリズム及び光ピックアップ装置
JP2005141884A (ja) 光ピックアップ装置
JPH10188317A (ja) 光ヘッドおよび光ディスク装置
JP2000311375A (ja) プリズム及び光ピックアップ装置
KR100683888B1 (ko) 광픽업 장치
JP2001118279A (ja) 光学プリズムおよび光ピックアップ装置
JPH10154346A (ja) 光ヘッド装置
JP2003151167A (ja) 光ヘッドおよび光ディスク装置
JP2002269805A (ja) 光ヘッドおよびそれを用いた光ディスク装置
JP3927372B2 (ja) 光ヘッドおよびそれを用いた光ディスク装置
US20060245335A1 (en) Optical head and information recording/reproducing apparatus
JP2002245658A (ja) 光ヘッド装置
JP2002304761A (ja) 光ピックアップ装置
JPH11296895A (ja) 光ピックアップ装置

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040927

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040927

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20050722

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050727

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050922

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20060222