DE19640837B4 - Optische Aufzeichnungs- und Wiedergabevorrichtung - Google Patents

Optische Aufzeichnungs- und Wiedergabevorrichtung Download PDF

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Publication number
DE19640837B4
DE19640837B4 DE19640837A DE19640837A DE19640837B4 DE 19640837 B4 DE19640837 B4 DE 19640837B4 DE 19640837 A DE19640837 A DE 19640837A DE 19640837 A DE19640837 A DE 19640837A DE 19640837 B4 DE19640837 B4 DE 19640837B4
Authority
DE
Germany
Prior art keywords
light
axis
photodetector
plate
recording
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
DE19640837A
Other languages
German (de)
English (en)
Other versions
DE19640837A1 (de
Inventor
Kun-ho Suwon Cho
Eung-Ho Kim
Jang-Hoon Yoo
Kyung-hwa Suwon Rim
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics 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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of DE19640837A1 publication Critical patent/DE19640837A1/de
Application granted granted Critical
Publication of DE19640837B4 publication Critical patent/DE19640837B4/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B7/135—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
    • G11B7/28—Re-recording, i.e. transcribing information from one optical record carrier on to one or more similar or dissimilar record carriers
    • 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
    • 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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
    • G11B7/0909—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only by astigmatic methods

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Glass Compositions (AREA)
  • Holo Graphy (AREA)
DE19640837A 1995-10-04 1996-10-02 Optische Aufzeichnungs- und Wiedergabevorrichtung Expired - Lifetime DE19640837B4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR95-33913 1995-10-04
KR1019950033913A KR100200858B1 (ko) 1995-10-04 1995-10-04 광픽업장치

Publications (2)

Publication Number Publication Date
DE19640837A1 DE19640837A1 (de) 1997-04-10
DE19640837B4 true DE19640837B4 (de) 2011-01-27

Family

ID=19429197

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19640837A Expired - Lifetime DE19640837B4 (de) 1995-10-04 1996-10-02 Optische Aufzeichnungs- und Wiedergabevorrichtung

Country Status (7)

Country Link
JP (1) JP3872145B2 (ko)
KR (1) KR100200858B1 (ko)
DE (1) DE19640837B4 (ko)
FR (1) FR2739717B1 (ko)
GB (1) GB2306045B (ko)
IT (1) IT1285223B1 (ko)
NL (1) NL1004079C2 (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09219036A (ja) * 1996-02-15 1997-08-19 Nec Corp 光ヘッド装置
WO2000039791A1 (en) * 1998-12-29 2000-07-06 Koninklijke Philips Electronics N.V. Optical scanning device for two types of record carriers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5281797A (en) * 1991-12-26 1994-01-25 Hitachi, Ltd. Short wavelength optical disk head having a changeable aperture
EP0610055A2 (en) * 1993-02-01 1994-08-10 Matsushita Electric Industrial Co., Ltd. Compound objective lens having two focal points and apparatus using the lens

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60185230A (ja) * 1984-03-02 1985-09-20 Pioneer Electronic Corp 焦点誤差検出装置
US5349592A (en) * 1992-02-27 1994-09-20 Kabushiki Kaisha Toshiba Super-resolution optical element for use in image forming apparatus
JPH06295467A (ja) * 1993-04-01 1994-10-21 Nippon Columbia Co Ltd 光ピックアップ装置
JP3548259B2 (ja) * 1994-04-07 2004-07-28 ペンタックス株式会社 光磁気ヘッド装置
KR100392857B1 (ko) * 1995-03-15 2003-12-31 코닌클리케 필립스 일렉트로닉스 엔.브이. 기록 매체를 광학적으로 주사하기 위한 장치
HU224675B1 (hu) * 1995-08-30 2005-12-28 Samsung Electronics Co. Ltd. Memória diszk letapogató optikai eszköz

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5281797A (en) * 1991-12-26 1994-01-25 Hitachi, Ltd. Short wavelength optical disk head having a changeable aperture
EP0610055A2 (en) * 1993-02-01 1994-08-10 Matsushita Electric Industrial Co., Ltd. Compound objective lens having two focal points and apparatus using the lens
JPH0798431A (ja) * 1993-02-01 1995-04-11 Matsushita Electric Ind Co Ltd 対物レンズ及び集光光学系及び光ヘッド装置及び光ディスク装置及び光ディスク及び顕微鏡及び露光装置

Also Published As

Publication number Publication date
KR100200858B1 (ko) 1999-06-15
GB9620677D0 (en) 1996-11-20
DE19640837A1 (de) 1997-04-10
JP3872145B2 (ja) 2007-01-24
JPH09120572A (ja) 1997-05-06
ITMI961992A1 (it) 1998-03-27
GB2306045A (en) 1997-04-23
NL1004079C2 (nl) 1998-01-07
NL1004079A1 (nl) 1997-04-08
FR2739717B1 (fr) 1999-01-08
FR2739717A1 (fr) 1997-04-11
KR970023055A (ko) 1997-05-30
GB2306045B (en) 1999-08-04
IT1285223B1 (it) 1998-06-03

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R020 Patent grant now final

Effective date: 20110427

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Representative=s name: KOTITSCHKE & HEURUNG PARTNERSCHAFT MBB, DE

Representative=s name: KOTITSCHKE & HEURUNG PARTNERSCHAFT MBB PATENT-, DE

R071 Expiry of right