KR970071500A - The optical pickup actuator - Google Patents

The optical pickup actuator Download PDF

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Publication number
KR970071500A
KR970071500A KR1019960010597A KR19960010597A KR970071500A KR 970071500 A KR970071500 A KR 970071500A KR 1019960010597 A KR1019960010597 A KR 1019960010597A KR 19960010597 A KR19960010597 A KR 19960010597A KR 970071500 A KR970071500 A KR 970071500A
Authority
KR
South Korea
Prior art keywords
base
yoke
actuator
inner yoke
bobbin
Prior art date
Application number
KR1019960010597A
Other languages
Korean (ko)
Other versions
KR100206780B1 (en
Inventor
정원을
Original Assignee
구자홍
Lg 전자 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.)
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Publication date
Application filed by 구자홍, Lg 전자 주식회사 filed Critical 구자홍
Priority to KR1019960010597A priority Critical patent/KR100206780B1/en
Publication of KR970071500A publication Critical patent/KR970071500A/en
Application granted granted Critical
Publication of KR100206780B1 publication Critical patent/KR100206780B1/en

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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
    • G11B7/08—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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0933—Details of stationary parts

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  • Optical Recording Or Reproduction (AREA)

Abstract

본 발명은 광픽업 에츄에이터에 관한 것으로, 종래의 엑츄에이터가 그 가동부인 보빈에 많은 부품이 구비 되어 운동특성이 나빠지고, 전체 높이가 높아 소형화가 불가능하였던 문제를 해결하기 위해 안출한 것이다. 본 발명은 베이스(11)와 메인요크(16)에 걸쳐 형성된 조립통공(11R)(16R)에 인너요크(20,20')의 기저부(22,23)가 삽입설치되고, 대물렌즈(14)의 개구수를 조절하기 위한 수단중 빔의 일부를 차폐하는 편광판(30)만을 대물렌즈(14)가 구비되어 이동되는 보빈(13)에 설치하여 구성된다. 이와 같은 본 발명에 의하면 엑츄에이터의 높이가 낮아져 광픽업장치의 소형화를 이룰 수 있고, 보빈에 구비되는 부품수가 줄어 보빈의 고속운동특성이 좋아지는 이점이 있다.The present invention relates to an optical pick-up actuator, and a conventional actuator has a bobbin which is a movable part of the actuator. The present invention is characterized in that the base portions 22 and 23 of the inner yokes 20 and 20 'are inserted into the assembled through holes 11R and 16R formed on the base 11 and the main yoke 16, Only the polarizing plate 30 for shielding a part of the beam among the means for adjusting the numerical aperture of the objective lens 14 is provided on the bobbin 13 to which the objective lens 14 is moved. According to the present invention, the height of the actuator is lowered, the optical pickup device can be downsized, and the number of parts provided on the bobbin is reduced, thereby improving the high-speed motion characteristics of the bobbin.

Description

광픽업용 엑츄에이터The optical pickup actuator

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제4도는 본 발명에 의한 광픽업용 엑츄에이터의 구성을 도시한 부분절결 사시도, 제5도는 본 발명에 의한 광픽업용 엑츄에이터의 메인 요크와 인너요크의 결합관계를 설명하기 위한 분해 사시도, 제6도는 본 발명에 의한 광픽업용 엑츄에이터의 메인요크와 인너요크의 결합관계를 설명하기 위한 종단면도.FIG. 5 is an exploded perspective view for explaining the coupling relationship between the main yoke and the inner yoke of the actuator for an optical pickup according to the present invention, FIG. 6 is an exploded perspective view of the optical pick- Fig. 7 is a vertical cross-sectional view for explaining an engagement relationship between a main yoke and an inner yoke of an actuator for an optical pickup according to the present invention; Fig.

Claims (7)

베이스와 메인요크에 걸쳐 형성된 조립통공에 인너요크의 기저부가 삽입설치되어 전체 높이가 낮아지게 됨을 특징으로 하는 광픽업용 엑츄에이터.Wherein a base portion of an inner yoke is inserted into an assembled through hole formed between the base and the main yoke so that the overall height is reduced. 제1항에 있어서, 상기 인너요크는 대략 ‘ㄷ'’형상으로 형성되는 것으로, 상기 베이스상에 수직으로 배치되는 적립부와, 상기 적립부와 일체로 절곡형성되어 상기 베이스상의 조립통공에 삽입되는 수평기저부와, 상기 수평기저부의 타단에 형성되어 상기 메인요크의 조립통공에 삽입설치되고 마그네트가 부착되는 수직기저부로 구성됨을 특징으로 하는 광픽업용 엑츄에이터.[2] The apparatus according to claim 1, wherein the inner yoke is formed in a substantially " C " shape, and includes an accumulating portion vertically disposed on the base, and a bending portion integrally formed with the accumulating portion, And a vertical base portion formed at the other end of the horizontal base portion and inserted into an assembly hole of the main yoke and having a magnet attached thereto. 제1항 또는 제2항에 있어서, 상기 메인요크 및 베이스와 상기 인너요크와의 체결은 상기 인너요크의 수직기저부에 부착된 마그네트에 의해 달성됨을 특징으로 하는 광픽업용 엑츄에이터.3. The actuator for an optical pickup according to claim 1 or 2, wherein the main yoke and the base and the inner yoke are fastened by a magnet attached to a vertical base of the inner yoke. 대물렌즈의 개구수를 조절하기 위한 수단중 빔의 일부를 차폐하는 편광판만을 대물렌즈가 구비되어 이동되는 보빈에 설치하여 구성됨을 특징으로 하는 광픽업용 엑츄에이터.Wherein the polarizing plate for shielding a part of the beam among the means for adjusting the numerical aperture of the objective lens is provided on the bobbin to which the objective lens is moved and moved. 베이스와 메인요크에 걸쳐 형성된 조립통공에 인너요크의 기저부가 삽입설치되고, 대물렌즈의 개구수를 조절하기 위한 수단중 빔의 일부를 자폐하는 편광판을 보빈에 설치하여 구성됨을 특징으로 하는 광픽업용 엑츄에이터.Wherein a base plate of an inner yoke is inserted into an assembling aperture formed in the base and the main yoke and a polarizing plate is installed in the bobbin to autofocus a part of the beam among the means for adjusting the numerical aperture of the objective lens. Actuator. 제5항에 있어서, 상기 인너요크는 대략 ‘ㄷ’형상으로 형성되는 것으로, 상기 베이스상에 수직으로 배치되는 직립부와, 상기 직립부와 일체로 절곡형성되어 상기 베이스상의 조립통공에 삽입되는 수평기저부와, 상기 수평기저부의 타단에 형성되어 상기 메인요크의 조립통공에 삽입설치되고 마그네트가 부착되는 수직기저부로 구성됨을 특징으로 하는 광픽업용 엑츄에이터.[6] The apparatus of claim 5, wherein the inner yoke is formed in a substantially " C " shape and includes an upright portion vertically disposed on the base, a horizontal portion formed integrally with the upright portion, And a vertical base portion formed at the other end of the horizontal base portion and inserted into an assembly hole of the main yoke and having a magnet attached thereto. 제5항 또는 제6항에 있어서, 상기 메인요크 및 베이스와 상기 인너요크와의 체결은 상기 인너요크의 수직기저부에 부착된 마그네트에 의해 달성됨을 특징으로 하는 광픽업용 엑츄에이터.The actuator for an optical pickup according to claim 5 or 6, wherein the coupling between the main yoke and the base and the inner yoke is achieved by a magnet attached to a vertical base of the inner yoke. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960010597A 1996-04-09 1996-04-09 Actuator for optic pickup KR100206780B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960010597A KR100206780B1 (en) 1996-04-09 1996-04-09 Actuator for optic pickup

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960010597A KR100206780B1 (en) 1996-04-09 1996-04-09 Actuator for optic pickup

Publications (2)

Publication Number Publication Date
KR970071500A true KR970071500A (en) 1997-11-07
KR100206780B1 KR100206780B1 (en) 1999-07-01

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100701749B1 (en) * 2004-02-25 2007-03-29 엘지전자 주식회사 Optical Pick-up actuator

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