FR2754097B1 - Dispositif a capteur optique - Google Patents

Dispositif a capteur optique

Info

Publication number
FR2754097B1
FR2754097B1 FR9712153A FR9712153A FR2754097B1 FR 2754097 B1 FR2754097 B1 FR 2754097B1 FR 9712153 A FR9712153 A FR 9712153A FR 9712153 A FR9712153 A FR 9712153A FR 2754097 B1 FR2754097 B1 FR 2754097B1
Authority
FR
France
Prior art keywords
optical sensor
sensor device
optical
sensor
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
FR9712153A
Other languages
English (en)
Other versions
FR2754097A1 (fr
Inventor
Yang Oh Choi
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.)
WiniaDaewoo Co Ltd
Original Assignee
Daewoo 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
Priority claimed from KR1019960043084A external-priority patent/KR19980023586A/ko
Priority claimed from KR1019960043083A external-priority patent/KR19980023585A/ko
Application filed by Daewoo Electronics Co Ltd filed Critical Daewoo Electronics Co Ltd
Publication of FR2754097A1 publication Critical patent/FR2754097A1/fr
Application granted granted Critical
Publication of FR2754097B1 publication Critical patent/FR2754097B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B7/1362—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
    • G11B7/08—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
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
FR9712153A 1996-09-30 1997-09-30 Dispositif a capteur optique Expired - Fee Related FR2754097B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1019960043084A KR19980023586A (ko) 1996-09-30 1996-09-30 광 픽-업장치
KR1019960043083A KR19980023585A (ko) 1996-09-30 1996-09-30 광 픽-업장치

Publications (2)

Publication Number Publication Date
FR2754097A1 FR2754097A1 (fr) 1998-04-03
FR2754097B1 true FR2754097B1 (fr) 1999-12-10

Family

ID=26632172

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9712153A Expired - Fee Related FR2754097B1 (fr) 1996-09-30 1997-09-30 Dispositif a capteur optique

Country Status (5)

Country Link
US (1) US5939710A (fr)
JP (1) JPH10112053A (fr)
CN (1) CN1181585A (fr)
FR (1) FR2754097B1 (fr)
NL (1) NL1007172C2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4155166B2 (ja) * 2003-11-10 2008-09-24 コニカミノルタオプト株式会社 光ピックアップ装置
JP2008135127A (ja) * 2006-11-29 2008-06-12 Konica Minolta Opto Inc 光学素子及び光ピックアップ装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7907216A (nl) * 1979-09-28 1981-03-31 Philips Nv Optisch fokusfout-detektiestelsel.
EP0225564A3 (en) * 1985-11-30 1988-07-06 Kabushiki Kaisha Toshiba Optical head
JPS6369325A (ja) * 1986-09-10 1988-03-29 Mitsubishi Electric Corp ２進化１０進符号からの変換回路
JPH0369025A (ja) * 1989-08-07 1991-03-25 Oki Electric Ind Co Ltd 光ディスク装置の焦点調整方法
JPH04318333A (ja) * 1991-04-17 1992-11-09 Matsushita Electric Ind Co Ltd 光ヘッド装置
JP3212105B2 (ja) * 1991-04-25 2001-09-25 オリンパス光学工業株式会社 光学ヘッド
US5331622A (en) * 1991-05-28 1994-07-19 Applied Magnetics Corporation Compact optical head
EP0601862A1 (fr) * 1992-12-09 1994-06-15 Omron Corporation Dispositif optique formé par couches minces multiples
EP0722167A4 (fr) * 1994-07-29 1997-01-29 Sony Corp Appareil de lecture optique

Also Published As

Publication number Publication date
NL1007172A1 (nl) 1998-03-31
NL1007172C2 (nl) 1998-07-08
CN1181585A (zh) 1998-05-13
JPH10112053A (ja) 1998-04-28
FR2754097A1 (fr) 1998-04-03
US5939710A (en) 1999-08-17

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Legal Events

Date Code Title Description
ST Notification of lapse