IT1290303B1 - Struttura di lente ad obiettivo,lettore ottico utilizzante tale obiettivo e metodo per la fabbricazione dello stesso - Google Patents

Struttura di lente ad obiettivo,lettore ottico utilizzante tale obiettivo e metodo per la fabbricazione dello stesso

Info

Publication number
IT1290303B1
IT1290303B1 IT97MI000286A ITMI970286A IT1290303B1 IT 1290303 B1 IT1290303 B1 IT 1290303B1 IT 97MI000286 A IT97MI000286 A IT 97MI000286A IT MI970286 A ITMI970286 A IT MI970286A IT 1290303 B1 IT1290303 B1 IT 1290303B1
Authority
IT
Italy
Prior art keywords
objective
lens structure
optical reader
objective lens
manufacturing itself
Prior art date
Application number
IT97MI000286A
Other languages
English (en)
Inventor
Lee Chul-Woo
Yoo Jang-Hoon
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 ITMI970286A1 publication Critical patent/ITMI970286A1/it
Application granted granted Critical
Publication of IT1290303B1 publication Critical patent/IT1290303B1/it

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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
    • 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
    • G11B7/0945—Methods for initialising servos, start-up sequences
    • 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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave 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
    • G11B7/1372—Lenses
    • G11B7/1374—Objective lenses
    • 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
    • G11B7/13922—Means for controlling the beam wavefront, e.g. for correction of aberration passive
    • 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
    • G11B7/08—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)
  • Lenses (AREA)
IT97MI000286A 1996-02-14 1997-02-12 Struttura di lente ad obiettivo,lettore ottico utilizzante tale obiettivo e metodo per la fabbricazione dello stesso IT1290303B1 (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960003604A KR100230253B1 (ko) 1996-02-14 1996-02-14 대물렌즈 장치 및 이의 제작방법 및 이를 적용한 광픽업장치

Publications (2)

Publication Number Publication Date
ITMI970286A1 ITMI970286A1 (it) 1998-08-12
IT1290303B1 true IT1290303B1 (it) 1998-10-22

Family

ID=19451250

Family Applications (1)

Application Number Title Priority Date Filing Date
IT97MI000286A IT1290303B1 (it) 1996-02-14 1997-02-12 Struttura di lente ad obiettivo,lettore ottico utilizzante tale obiettivo e metodo per la fabbricazione dello stesso

Country Status (8)

Country Link
US (1) US5903536A (it)
JP (1) JP3078237B2 (it)
KR (1) KR100230253B1 (it)
DE (1) DE19705750C2 (it)
FR (1) FR2744811B1 (it)
GB (1) GB2310310B (it)
IT (1) IT1290303B1 (it)
NL (1) NL1005271C2 (it)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6259668B1 (en) 1996-02-14 2001-07-10 Samsung Electronics Co., Ltd. Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses
EP0838812B1 (en) * 1996-10-23 2003-04-09 Konica Corporation Method for recording/reproducing on/from an optical information recording medium, optical pickup apparatus, objective lens and design method of objective lens
DE69840116D1 (de) * 1997-03-13 2008-11-27 Hitachi Maxell Optische Linse und optischer Abtastkopf
KR100514323B1 (ko) 1997-12-05 2005-12-08 삼성전자주식회사 복수의광디스크를호환하는대물렌즈를구비한광픽업
KR100354534B1 (ko) 1998-03-17 2002-12-11 삼성전자 주식회사 협트랙광디스크를위한광픽업
KR20000047312A (ko) * 1998-12-31 2000-07-25 구자홍 광 디스크의 재생배속 가변 조정장치 및 조정방법
DE60018735T2 (de) * 1999-01-22 2006-01-26 Konica Minolta Opto, Inc., Hachioji Optische Abtastvorrichtung, Aufzeichnungs- /-Wiedergabegerät mit dieser optischen Abtastvorrichtung, optisches Element und Verfahren zur Informationsaufzeichnung /-Wiedergabe
JP2000338395A (ja) * 1999-05-27 2000-12-08 Konica Corp 光ピックアップ装置及び補正レンズ
JP3858523B2 (ja) 1999-07-27 2006-12-13 株式会社日立製作所 対物レンズ
JP2002133694A (ja) * 2000-10-30 2002-05-10 Matsushita Electric Ind Co Ltd 光記録装置、光記録方法、媒体、および情報集合体
WO2002039440A1 (en) * 2000-11-09 2002-05-16 Koninklijke Philips Electronics N.V. Optical head for scanning a record carrier.
US6977781B2 (en) * 2002-09-03 2005-12-20 Pentax Corporation Scanning optical system
US7042608B2 (en) * 2002-09-18 2006-05-09 Pentax Corporation Scanning optical system
US7019768B2 (en) * 2002-11-28 2006-03-28 Pentax Corporation Scanning optical system
JP4234635B2 (ja) 2004-04-28 2009-03-04 株式会社東芝 電子機器
KR100712895B1 (ko) 2005-09-21 2007-04-30 도시바삼성스토리지테크놀러지코리아 주식회사 광디스크의 구면 수차 보정 방법 및 이에 적합한 장치
JP2009020988A (ja) * 2007-06-15 2009-01-29 Sanyo Electric Co Ltd 光ピックアップ装置
JP5575159B2 (ja) * 2012-01-26 2014-08-20 シャープ株式会社 蛍光情報読み取り装置および蛍光情報読み取り方法
US10585248B2 (en) 2017-02-20 2020-03-10 Us Conec, Ltd. Lensed ferrule with low back reflection
KR20180128203A (ko) 2017-05-23 2018-12-03 현대모비스 주식회사 차량용 조명장치

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3220408C2 (de) * 1982-05-29 1985-05-15 Optische Werke G. Rodenstock, 8000 München Abtastobjektiv
NL8304213A (nl) * 1983-12-07 1985-07-01 Philips Nv Enkelvoudige lens met een asferisch oppervlak.
JPS60145919A (ja) * 1983-12-29 1985-08-01 Ohara Inc 高精度ガラス成形品のプレス成形方法
JPS6273429A (ja) * 1985-09-26 1987-04-04 Toshiba Corp 光学式ピツクアツプの位置検出装置
WO1992010769A1 (en) * 1990-12-14 1992-06-25 Eastman Kodak Company Gradient index lenses with at least one aspherical surface
TW218427B (it) * 1991-06-04 1994-01-01 Ibm
US5281797A (en) * 1991-12-26 1994-01-25 Hitachi, Ltd. Short wavelength optical disk head having a changeable aperture
US5349592A (en) * 1992-02-27 1994-09-20 Kabushiki Kaisha Toshiba Super-resolution optical element for use in image forming apparatus
JPH0628704A (ja) * 1992-07-10 1994-02-04 Toshiba Corp 光学ヘッド装置
JP2559006B2 (ja) * 1993-01-13 1996-11-27 松下電器産業株式会社 光ヘッド
JP2532818B2 (ja) * 1993-02-01 1996-09-11 松下電器産業株式会社 対物レンズおよび光ヘッド装置
JP3435249B2 (ja) * 1994-03-11 2003-08-11 株式会社東芝 光学ヘッド装置およびレンズ
HU224675B1 (hu) * 1995-08-30 2005-12-28 Samsung Electronics Co. Ltd. Memória diszk letapogató optikai eszköz
KR100200873B1 (ko) * 1996-01-11 1999-06-15 윤종용 광 픽업 장치

Also Published As

Publication number Publication date
NL1005271A1 (nl) 1997-08-15
KR100230253B1 (ko) 1999-11-15
DE19705750A1 (de) 1997-11-27
JPH09237431A (ja) 1997-09-09
NL1005271C2 (nl) 1999-11-11
FR2744811A1 (fr) 1997-08-14
GB2310310A (en) 1997-08-20
GB9703063D0 (en) 1997-04-02
KR970063071A (ko) 1997-09-12
JP3078237B2 (ja) 2000-08-21
US5903536A (en) 1999-05-11
ITMI970286A1 (it) 1998-08-12
DE19705750C2 (de) 1999-03-25
FR2744811B1 (fr) 2000-07-28
GB2310310B (en) 1998-09-16

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