DE60110703D1 - Optisches Abtastgerät mit einer verbesserten holographischen Einheit und optisches Plattengerät dies enthaltend - Google Patents

Optisches Abtastgerät mit einer verbesserten holographischen Einheit und optisches Plattengerät dies enthaltend

Info

Publication number
DE60110703D1
DE60110703D1 DE60110703T DE60110703T DE60110703D1 DE 60110703 D1 DE60110703 D1 DE 60110703D1 DE 60110703 T DE60110703 T DE 60110703T DE 60110703 T DE60110703 T DE 60110703T DE 60110703 D1 DE60110703 D1 DE 60110703D1
Authority
DE
Germany
Prior art keywords
optical disk
optical
holographic unit
scanning device
disk device
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 - Lifetime
Application number
DE60110703T
Other languages
English (en)
Other versions
DE60110703T2 (de
Inventor
Shigeru Ohuchida
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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
Priority claimed from JP2000318133A external-priority patent/JP2002123971A/ja
Priority claimed from JP2001178342A external-priority patent/JP2002123952A/ja
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of DE60110703D1 publication Critical patent/DE60110703D1/de
Application granted granted Critical
Publication of DE60110703T2 publication Critical patent/DE60110703T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
    • 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
    • G11B7/13—Optical detectors therefor
    • G11B7/131—Arrangement of detectors in a multiple array
    • 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
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/32—Holograms used as optical elements
    • 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
DE60110703T 2000-08-09 2001-08-07 Optisches Abtastgerät mit einer verbesserten holographischen Einheit und optisches Plattengerät dies enthaltend Expired - Lifetime DE60110703T2 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2000240759 2000-08-09
JP2000240759 2000-08-09
JP2000318133 2000-10-18
JP2000318133A JP2002123971A (ja) 2000-10-18 2000-10-18 光ピックアップ装置
JP2001178342 2001-06-13
JP2001178342A JP2002123952A (ja) 2000-08-09 2001-06-13 光ピックアップ装置及び光ディスクドライブ装置

Publications (2)

Publication Number Publication Date
DE60110703D1 true DE60110703D1 (de) 2005-06-16
DE60110703T2 DE60110703T2 (de) 2006-05-04

Family

ID=27344297

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60110703T Expired - Lifetime DE60110703T2 (de) 2000-08-09 2001-08-07 Optisches Abtastgerät mit einer verbesserten holographischen Einheit und optisches Plattengerät dies enthaltend

Country Status (3)

Country Link
US (2) US6937554B2 (de)
EP (1) EP1184848B1 (de)
DE (1) DE60110703T2 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6822771B2 (en) 2001-09-28 2004-11-23 Ricoh Company, Ltd. Optical pickup unit and optical disk drive for accurate and stable information recording and reproduction
KR100472443B1 (ko) * 2002-03-19 2005-02-21 삼성전자주식회사 광픽업 장치
US7164532B2 (en) * 2002-04-19 2007-01-16 Ricoh Company, Ltd. Diffraction grating, light source unit applying the same therein, and optical head device employing the same
JP3837089B2 (ja) * 2002-06-07 2006-10-25 松下電器産業株式会社 回折素子および光ピックアップヘッド装置
JP2004127482A (ja) * 2002-08-07 2004-04-22 Sharp Corp 光ピックアップ装置
US7110180B2 (en) * 2002-10-09 2006-09-19 Ricoh Company, Ltd. Diffraction grating, method of fabricating diffraction optical element, optical pickup device, and optical disk drive
ATE418140T1 (de) * 2002-11-13 2009-01-15 Asahi Glass Co Ltd Doppelwellenlängenlichtquelleneinheit und optische kopfeinrichtung
US7548359B2 (en) * 2002-11-13 2009-06-16 Asahi Glass Company, Limited Double-wavelength light source unit and optical head device having four diffraction gratings
JP4138803B2 (ja) * 2003-01-30 2008-08-27 松下電器産業株式会社 光ヘッドとこれを備えた装置及びシステム
US7577076B2 (en) * 2003-03-14 2009-08-18 Ricoh Company, Ltd. Tilt sensor using diffraction grating
JP4098139B2 (ja) * 2003-04-03 2008-06-11 シャープ株式会社 光ピックアップ
JP2005018897A (ja) * 2003-06-25 2005-01-20 Toshiba Corp 光学ヘッド及び光ディスクドライブ
JP3779705B2 (ja) * 2003-08-13 2006-05-31 Ｔｄｋ株式会社 光ヘッド、ｌｄモジュール、光記録再生装置及び光記録再生装置に用いる回折素子
JP4311732B2 (ja) * 2004-04-13 2009-08-12 株式会社リコー 光ピックアップ装置及び光ディスク装置
US7808863B2 (en) * 2004-04-26 2010-10-05 Wai-Hon Lee Laser/detector device for optical recording with adjustable detector position
JPWO2006054383A1 (ja) * 2004-11-16 2008-05-29 松下電器産業株式会社 光ピックアップ装置
JP4277005B2 (ja) * 2005-01-26 2009-06-10 パナソニック株式会社 光ピックアップ装置
JP2006267768A (ja) * 2005-03-25 2006-10-05 Fuji Photo Film Co Ltd 撮影装置および投光モジュール
JP2007134016A (ja) * 2005-11-14 2007-05-31 Funai Electric Co Ltd 光ピックアップ装置
JP4433315B2 (ja) * 2006-01-12 2010-03-17 ソニー株式会社 光ピックアップ及び光情報装置
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
JP5509137B2 (ja) 2010-05-14 2014-06-04 シャープ株式会社 光ピックアップ装置
JP2012053929A (ja) * 2010-08-31 2012-03-15 Hitachi Media Electoronics Co Ltd 光ピックアップ

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06168463A (ja) * 1992-09-18 1994-06-14 Ricoh Co Ltd 光ヘッド
JP3047314B2 (ja) * 1995-01-12 2000-05-29 株式会社リコー 光ヘッド
JP3021343B2 (ja) 1995-05-09 2000-03-15 株式会社リコー 光学ヘッド装置
JP3026279B2 (ja) 1995-10-25 2000-03-27 日本電気株式会社 記録再生装置用レーザモジュール
KR100267233B1 (ko) * 1996-09-24 2000-10-16 윤종용 2광원을 이용한 홀로그램 광픽업
DE69722951T2 (de) * 1996-10-31 2004-05-19 Sanyo Electric Co., Ltd., Moriguchi Optische abtastvorrichtung
KR100209918B1 (ko) * 1997-03-28 1999-07-15 윤종용 홀로그램형링렌즈를 사용하여 cd-r과 호환하는 dvd용 광픽업
JP3778316B2 (ja) * 1997-05-22 2006-05-24 パイオニア株式会社 光ピックアップ装置
JP3304053B2 (ja) * 1997-05-30 2002-07-22 松下電器産業株式会社 光ヘッドおよび光ディスク装置
US20010050892A1 (en) 1997-07-11 2001-12-13 Yoshitaka Takahashi Optical disk apparatus compatible with different types of mediums
JP3635516B2 (ja) 1997-07-11 2005-04-06 株式会社リコー 光ディスク装置
JPH11296893A (ja) 1998-04-14 1999-10-29 Ricoh Co Ltd 光ピックアップ
US6584060B1 (en) * 1998-06-24 2003-06-24 Ricoh Company, Ltd. Optical pick-up device for recording/reading information on optical recording medium
US6072579A (en) * 1998-08-27 2000-06-06 Ricoh Company, Ltd. Optical pickup apparatus having improved holographic optical element and photodetector
JP3459777B2 (ja) * 1998-08-31 2003-10-27 シャープ株式会社 光ピックアップ装置
JP2000123403A (ja) * 1998-10-19 2000-04-28 Victor Co Of Japan Ltd 光ピックアップ及び光デバイス
TW411454B (en) * 1998-10-28 2000-11-11 Ind Tech Res Inst Optical read/write head for dual wavelength
JP2000215496A (ja) 1999-01-20 2000-08-04 Ricoh Co Ltd 光ピックアップ装置
EP1047051A3 (de) * 1999-04-19 2001-01-24 Samsung Electronics Co., Ltd. Lichtemittierendes Modul und kompatibles optisches Abtastgerät dafür
JP2001256666A (ja) * 2000-03-09 2001-09-21 Ricoh Co Ltd 光ピックアップ装置
JP3662519B2 (ja) * 2000-07-13 2005-06-22 シャープ株式会社 光ピックアップ

Also Published As

Publication number Publication date
EP1184848A2 (de) 2002-03-06
US7307938B2 (en) 2007-12-11
EP1184848B1 (de) 2005-05-11
US6937554B2 (en) 2005-08-30
US20020018432A1 (en) 2002-02-14
DE60110703T2 (de) 2006-05-04
EP1184848A3 (de) 2003-01-29
US20050088948A1 (en) 2005-04-28

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