DE602007001942D1 - Optische Lesekopfvorrichtung - Google Patents

Optische Lesekopfvorrichtung

Info

Publication number
DE602007001942D1
DE602007001942D1 DE602007001942T DE602007001942T DE602007001942D1 DE 602007001942 D1 DE602007001942 D1 DE 602007001942D1 DE 602007001942 T DE602007001942 T DE 602007001942T DE 602007001942 T DE602007001942 T DE 602007001942T DE 602007001942 D1 DE602007001942 D1 DE 602007001942D1
Authority
DE
Germany
Prior art keywords
reading device
optical reading
optical
reading
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
DE602007001942T
Other languages
English (en)
Inventor
Ken Nishioka
Mitsuyoshi Sasabe
Mika Hamaoka
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.)
Funai Electric Co Ltd
Original Assignee
Funai Electric 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 Funai Electric Co Ltd filed Critical Funai Electric Co Ltd
Publication of DE602007001942D1 publication Critical patent/DE602007001942D1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • 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
    • G11B7/135—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
    • 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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • G11B7/1367—Stepped phase plates
    • 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
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
    • 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
    • G11B7/1398—Means for shaping the cross-section of the beam, e.g. into circular or elliptical cross-section
    • 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)
DE602007001942T 2006-12-04 2007-11-22 Optische Lesekopfvorrichtung Expired - Fee Related DE602007001942D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006326404A JP2008140483A (ja) 2006-12-04 2006-12-04 光ピックアップ装置

Publications (1)

Publication Number Publication Date
DE602007001942D1 true DE602007001942D1 (de) 2009-09-24

Family

ID=39149178

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602007001942T Expired - Fee Related DE602007001942D1 (de) 2006-12-04 2007-11-22 Optische Lesekopfvorrichtung

Country Status (5)

Country Link
US (1) US20080130466A1 (de)
EP (1) EP1930892B1 (de)
JP (1) JP2008140483A (de)
CN (1) CN101197154A (de)
DE (1) DE602007001942D1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101527002B1 (ko) * 2013-11-18 2015-06-09 주식회사 유알테크놀로지 레이저빔 발생장치
US9559023B2 (en) * 2014-06-23 2017-01-31 Ultratech, Inc. Systems and methods for reducing beam instability in laser annealing

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07182687A (ja) * 1993-12-24 1995-07-21 Sharp Corp 光ピックアップ
JPH09161307A (ja) * 1995-12-08 1997-06-20 Hitachi Ltd 光学ヘッドおよび光学式情報再生装置
JP3062099B2 (ja) * 1996-02-06 2000-07-10 日本電気株式会社 光ヘッド装置
US5745465A (en) * 1997-01-23 1998-04-28 Industrial Technology Research Institute Digital video disc pick-up head system
KR100238077B1 (ko) * 1997-01-28 2000-01-15 윤종용 평판을 사용하여 cd-r디스크에 호환하는 dvd디스크의 광픽업
KR100266223B1 (ko) * 1998-01-16 2000-09-15 구자홍 광픽업 장치
TW368650B (en) * 1998-02-19 1999-09-01 Ind Tech Res Inst Prism object lens of optical pickup head
TW495749B (en) * 1998-08-03 2002-07-21 Matsushita Electric Ind Co Ltd Optical head
JP4218096B2 (ja) * 1998-11-27 2009-02-04 パナソニック株式会社 光学ヘッド
JP3659089B2 (ja) * 1999-10-25 2005-06-15 株式会社日立製作所 光ヘッド及びそれを用いた光学的情報媒体記録再生装置
US6496453B2 (en) * 2000-03-27 2002-12-17 Matsushita Electric Industrial Co., Ltd. Optical pickup
US7050380B2 (en) * 2000-04-18 2006-05-23 Ricoh Company, Ltd. Optical element, optical pickup unit, and optical disk drive unit
JP4728542B2 (ja) 2001-09-21 2011-07-20 株式会社リコー 光学素子、該光学素子を用いた光ピックアップ装置及び光ディスクドライブ装置
JP3668422B2 (ja) 2000-11-24 2005-07-06 シャープ株式会社 光ピックアップ装置
JP2002304761A (ja) 2001-04-09 2002-10-18 Ricoh Co Ltd 光ピックアップ装置
KR20040071697A (ko) 2001-12-06 2004-08-12 코닌클리케 필립스 일렉트로닉스 엔.브이. 광학주사장치
JP2004062953A (ja) * 2002-07-25 2004-02-26 Pioneer Electronic Corp ピックアップ装置

Also Published As

Publication number Publication date
EP1930892A1 (de) 2008-06-11
JP2008140483A (ja) 2008-06-19
US20080130466A1 (en) 2008-06-05
EP1930892B1 (de) 2009-08-12
CN101197154A (zh) 2008-06-11

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee