KR960042562A - 듀얼포커스법에 사용되는 광학헤드 위치 조절장치 - Google Patents

듀얼포커스법에 사용되는 광학헤드 위치 조절장치 Download PDF

Info

Publication number
KR960042562A
KR960042562A KR1019950014153A KR19950014153A KR960042562A KR 960042562 A KR960042562 A KR 960042562A KR 1019950014153 A KR1019950014153 A KR 1019950014153A KR 19950014153 A KR19950014153 A KR 19950014153A KR 960042562 A KR960042562 A KR 960042562A
Authority
KR
South Korea
Prior art keywords
objective lens
thickness
focus
disk
disc
Prior art date
Application number
KR1019950014153A
Other languages
English (en)
Other versions
KR0137245B1 (ko
Inventor
최환문
Original Assignee
배순훈
대우전자 주식회사
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 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950014153A priority Critical patent/KR0137245B1/ko
Priority to US08/656,876 priority patent/US5828635A/en
Priority to JP8138254A priority patent/JPH08329487A/ja
Priority to CN96108470A priority patent/CN1146592A/zh
Priority to EP96108727A priority patent/EP0745979A3/en
Publication of KR960042562A publication Critical patent/KR960042562A/ko
Application granted granted Critical
Publication of KR0137245B1 publication Critical patent/KR0137245B1/ko

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
    • G11B7/08—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
    • 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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0935—Details of the moving parts
    • 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
    • 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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • 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
    • 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

  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

본 발명은 듀얼포커법에 사용되는 광학헤드위치조절장치에 관한 것으로, 빔스플리터를 통해 입사된 빛을 촛점이동거리에따라 굴절시켜 디스크의 두께에 관계없이 정확한 촛점을 형성해주는 유동대물렌즈와, 상기 디스크의 두께를 검출하는 검출센서와, 이 검출센서에 의해 검출된 디스크검출신호를 비교판단하여 유동대물렌즈의 촛점형성기능을 제어하는 마이컴과, 이 마이컴의 촛점이동제어신호에 따라 구동모터를 제어하는 서보모터제어부와, 상기 구동모터의 회전에 따라 구동되어유동대물렌즈를 이동시키는 대물렌즈의 이동수단으로 이루어져, 상기 디스크의 두께에 따른 검출신호에 의해 대물렌즈에 장착된 이동수단이 대물렌즈를 이동시켜 디스크피트의 정확한 촛점을 맞추도록 하므로써, 디스크 두께에 관계없이 정보재생동작을 용이하게 실행하게 되므로 이에 따라 시스템의 기능성을 증가시키도록 됨은 물론 대물렌즈가 직접 이동하여 촛점을 맞추게 되므로 별도의 콜리메이트 렌즈가 필요없게 되어 구조가 간단하게 되므로 이에 따라 제조비용도 상당히 감소시킬 수 있다.

Description

듀얼포커스법에 사용되는 광학헤드 위치 조절장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제3도는 본 발명의 장치를 설명하기 위한 설명도이고, 제4도(a),(b)는 본 발명의 대물렌즈 이동수단을 좀더 알기쉽게 설명하기 위한 설명도이다.

Claims (3)

  1. 레이저다이오드(1) 및 빔스플리터(2)가 구비된 듀얼포커스법에 사용되는 광학 헤드위치조절장치에 있어서, 상기 빔스플리터(2)를 통해 입사된 빛을 촛점이동거리에 따라 굴절시켜 디스크의 두께에 관계없이 정확한 촛점을 형성해주는 유동대물렌즈(3)와 , 상기디스크의 두께를 검출하는 검출센서(4)와, 이 검출센서(4)에 의해 검출된 디스크검출신호를 비교판단하여 유동대물렌즈(3)의 촛점형성기능을 제어하는 마이컴(5)과, 이 마이컴(5)의 촛점이동제어신호에 따라 구동모터(6)를 제어하는 서보모터제어부(7)와, 상기 구동모터(6)의 회전에 따라 구동되어 유동대물렌즈(3)를 이동시키는 대물렌즈의 이동수단(80으로 이루어진 것을 특징으로 하는 듀얼포커스법에 사용되는 광학헤드위치조절장치.
  2. 제1항에 있어서, 상기 대물렌즈 이동수단(8)이 유동대물렌즈(3)의 양측면부에 일체로 결합되는 고정편(9)과, 이 고정편(9)의 다른일측에 결합되는 래크기어부재(10)와, 이 래크기어부재(10)의 톱니에 맞물려 기어연동작용을 하는 피니언기어(11)와, 상기 래크기어부재(10)의 후면으로 결합되는 고정지지부재(13)와, 상기 래크기어부재(10)의 몸체후면으로 돌출 형성되고 고정지지부재(13)의 안내레일(12)에 삽입되어 유동하는 유동부재(14)로 이루어진 것을 특징으로 하는 듀얼포커스법에 사용되는 광학헤드위치 조절장치.
  3. 제1항에 있어서, 상기 구동모터(6)가 스텝핑모터인 것을 특징으로 하는 듀얼포커스법에 사용되는 광학헤드위치 조절장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950014153A 1995-05-31 1995-05-31 듀얼포커스법에 사용되는 광학헤드 위치 조절장치(an optical head position adjusting device using at the method of dual focus) KR0137245B1 (ko)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1019950014153A KR0137245B1 (ko) 1995-05-31 1995-05-31 듀얼포커스법에 사용되는 광학헤드 위치 조절장치(an optical head position adjusting device using at the method of dual focus)
US08/656,876 US5828635A (en) 1995-05-31 1996-05-30 Optical pickup apparatus capable of transferring objective lens in optical axial direction depending on thickness of disc for focusing respectively onto discs with different thicknesses
JP8138254A JPH08329487A (ja) 1995-05-31 1996-05-31 対物レンズ位置調節装置を有する光ピックアップ装置
CN96108470A CN1146592A (zh) 1995-05-31 1996-05-31 带有物镜定位系统的光学拾取装置
EP96108727A EP0745979A3 (en) 1995-05-31 1996-05-31 Optical pickup apparatus having objective lens positioning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950014153A KR0137245B1 (ko) 1995-05-31 1995-05-31 듀얼포커스법에 사용되는 광학헤드 위치 조절장치(an optical head position adjusting device using at the method of dual focus)

Publications (2)

Publication Number Publication Date
KR960042562A true KR960042562A (ko) 1996-12-21
KR0137245B1 KR0137245B1 (ko) 1998-05-15

Family

ID=19416089

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950014153A KR0137245B1 (ko) 1995-05-31 1995-05-31 듀얼포커스법에 사용되는 광학헤드 위치 조절장치(an optical head position adjusting device using at the method of dual focus)

Country Status (5)

Country Link
US (1) US5828635A (ko)
EP (1) EP0745979A3 (ko)
JP (1) JPH08329487A (ko)
KR (1) KR0137245B1 (ko)
CN (1) CN1146592A (ko)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09251662A (ja) * 1996-03-15 1997-09-22 Sony Corp 記録媒体記録再生装置および記録媒体記録再生方法
JPH10188301A (ja) * 1996-12-20 1998-07-21 Sony Corp 光ディスク記録再生装置および方法
JPH11110794A (ja) * 1997-09-30 1999-04-23 Sony Corp レンズ駆動装置及び光学ヘッド
KR19990085026A (ko) * 1998-05-13 1999-12-06 윤종용 부품 실장기의 카메라 위치 조절장치
KR20020064826A (ko) * 2001-02-03 2002-08-10 삼성전자 주식회사 광픽업 장치
DE10344504A1 (de) * 2003-09-24 2005-05-25 Deutsche Thomson-Brandt Gmbh Abtasteinrichtung für ein Gerät zum Lesen oder Beschreiben optischer Aufzeichnungsträger
KR102495302B1 (ko) * 2022-10-21 2023-02-06 정성용 노광기용 렌즈 위치 조정 시스템

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4322838A (en) * 1980-02-11 1982-03-30 Hewlett-Packard Company Dynamic focus adjustment for transmissive or reflective optical disc memory systems
JPS576815A (en) * 1980-06-13 1982-01-13 Toshihiro Kondo Focus detecting method
JPS57161813A (en) * 1981-03-31 1982-10-05 Olympus Optical Co Ltd Optical head driver
DE3584945D1 (de) * 1984-10-30 1992-01-30 Brother Ind Ltd Magnetooptisches speichermedium und geraet zum schreiben auf und lesen von dem medium.
JPH0614409B2 (ja) * 1985-03-23 1994-02-23 オリンパス光学工業株式会社 光学的情報記録再生装置
US5235581A (en) * 1990-08-09 1993-08-10 Matsushita Electric Industrial Co., Ltd. Optical recording/reproducing apparatus for optical disks with various disk substrate thicknesses
TW218427B (ko) * 1991-06-04 1994-01-01 Ibm
JPH0581685A (ja) * 1991-09-24 1993-04-02 Sony Corp 光学式デイスク装置
US5157555A (en) * 1991-12-04 1992-10-20 General Electric Company Apparatus for adjustable correction of spherical aberration
KR940006129B1 (ko) * 1991-12-24 1994-07-06 삼성전자 주식회사 양면디스크 재생장치
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

Also Published As

Publication number Publication date
JPH08329487A (ja) 1996-12-13
KR0137245B1 (ko) 1998-05-15
EP0745979A2 (en) 1996-12-04
CN1146592A (zh) 1997-04-02
US5828635A (en) 1998-10-27
EP0745979A3 (en) 1997-01-22

Similar Documents

Publication Publication Date Title
MY131558A (en) Focusing servo system and focus servo acquisition enable with multiple velocity acquisition modes
MY103883A (en) Optical head devices for use in disc players
KR960032345A (ko) 광학픽업장치
KR960035476A (ko) 대물렌즈, 광헤드장치 및 광디스크 재생장치
KR960042562A (ko) 듀얼포커스법에 사용되는 광학헤드 위치 조절장치
KR900015092A (ko) 광디스크장치의 비임트랙 위치제어장치
KR950020477A (ko) 광 픽업 장치
KR970063064A (ko) 듀얼 포커스 광 픽-업장치
JPS57205834A (en) Light focusing position controller
EP1655725A3 (en) Recording/reproducing information of an optical disk surface where no track information is present
JPH0626971Y2 (ja) 光ディスク装置
JPS6155187B2 (ko)
JPH03185633A (ja) 光記録再生装置
US7289400B2 (en) Optical disc drive having a movable aberration correcting lens
JPS626581Y2 (ko)
JP2746302B2 (ja) 光学ヘッド
JPH0628698A (ja) 光学ピックアップ装置
EP1777703A3 (en) Focus control device and method
JP2760366B2 (ja) 光学的情報記録再生装置
JP2632969B2 (ja) 光学式情報記録再生装置
JP2558405Y2 (ja) 対物レンズ駆動装置
KR200147776Y1 (ko) 광픽업장치
JPH0528570Y2 (ko)
JPH0749621Y2 (ja) 光学式情報記録・再生装置の光ヘッド構造
JP2001084715A (ja) 光ディスク装置

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20090202

Year of fee payment: 12

LAPS Lapse due to unpaid annual fee