KR980004437A - Actuator for Optical Pickup - Google Patents

Actuator for Optical Pickup Download PDF

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Publication number
KR980004437A
KR980004437A KR1019960020980A KR19960020980A KR980004437A KR 980004437 A KR980004437 A KR 980004437A KR 1019960020980 A KR1019960020980 A KR 1019960020980A KR 19960020980 A KR19960020980 A KR 19960020980A KR 980004437 A KR980004437 A KR 980004437A
Authority
KR
South Korea
Prior art keywords
coil
actuator
optical pickup
permanent magnet
bobbin
Prior art date
Application number
KR1019960020980A
Other languages
Korean (ko)
Other versions
KR100220391B1 (en
Inventor
최인호
Original Assignee
구자홍
Lg 전자주식회사
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 전자주식회사 filed Critical 구자홍
Priority to KR1019960020980A priority Critical patent/KR100220391B1/en
Publication of KR980004437A publication Critical patent/KR980004437A/en
Application granted granted Critical
Publication of KR100220391B1 publication Critical patent/KR100220391B1/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

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

본 발명은 광픽업용 액츄에이터의 구동코일 형태와 영구자석의 착자패턴을 개선하여 액츄에이터 주위의 공간활용성을 증대시킴에 의해서 광픽업 장치의 박형화가 이루어지도록 한 것이다.The present invention is to reduce the optical pickup device by improving the shape of the drive coil of the optical pickup actuator and the magnetization pattern of the permanent magnet to increase the space utilization around the actuator.

본 발명의 광픽업용 액츄에이터는 보빈의 전후면에 동일형상의 적충체로 이루어진 트랙킹 코일과 포커싱 코일을 설치하는 한편 이들 코일과 대향하는 위치에 설치되는 직사각형 영구자석의 착차패턴이 상하 단부중 어느 한 중심으로부터 반대편의 양측 모서리를 향하는 분할선에 의해 얻어진 세 분할영역중 중앙부와 양측 두영역간에 서로 다른 극성으로 이루어지도록 한 구조로 이루어져 있다.In the optical pick-up actuator of the present invention, a tracking coil and a focusing coil made of a same-shaped red worm are provided on the front and rear surfaces of the bobbin, and a landing pattern of a rectangular permanent magnet installed at a position opposite to these coils is one of the upper and lower ends. The three divisions obtained by the dividing line from the center to the opposite edges on the opposite side are composed of structures having different polarities between the center and the two regions.

본 발명에서는 보빈의 측면을 이용하여 광학계를 구성할 수 있음에 따라 광픽업의 두께를 감소기켜 장치의 박형화를 기할수 있음은 물론 코일 형상의 통일화로 생산성을 향상시킬 수 있는 효과가 있다.In the present invention, as the optical system can be configured using the side surface of the bobbin, the thickness of the optical pickup can be reduced to reduce the thickness of the device, and the productivity of the coil shape can be improved.

Description

광픽업용 액츄에이터Actuator for Optical Pickup

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제3도는 본 발명의 광픽업용 액츄에이터 구동장치를 보인 평면도.3 is a plan view showing the actuator driving device for an optical pickup of the present invention.

제4a도는 본 발명 액츄에이터 구동장치의 영구자석 착차패턴.Figure 4a is a permanent magnet landing pattern of the actuator drive device of the present invention.

제4b도는 본 발명 액츄에이터 구동장치의 영구자석 착차패턴.Figure 4b is a permanent magnet landing pattern of the actuator drive device of the present invention.

제5도는 본 발명 액츄에이터 구동장치의 코일에 대한 사시도.5 is a perspective view of a coil of the actuator drive device of the present invention.

제6a도는 본 발명 액츄에이터 구동장치의 포커싱 동작을 설명하기 위한 구동부의 측면도Figure 6a is a side view of the drive unit for explaining the focusing operation of the actuator drive device of the present invention

제6b도는 본 발명 액츄에이터 구동장치의 포커싱 동작을 설명하기 위한 구동부의 평면도.Figure 6b is a plan view of the drive unit for explaining the focusing operation of the actuator drive device of the present invention.

제7a도는 본 발명 액츄에이터 구동장치의 트랙킹 동작을 설명하기 위한 구동부의 측면도Figure 7a is a side view of the drive unit for explaining the tracking operation of the actuator drive device of the present invention

제7b도는 본 발명 액츄에이터 구동장치의 트랙킹 동작을 설명하기 위한 구동부의 평면도.7B is a plan view of a drive unit for explaining a tracking operation of the actuator drive device of the present invention.

제8도는 본 발명 액츄에이터의 일실시예 구조를 보인 측면도.Figure 8 is a side view showing an embodiment structure of the actuator of the present invention.

Claims (5)

동일 형상의 트랙킹 코일과 포커싱 코일의 적충체로 이루어져 렌즈가 구비된 보빈의 전후면에 설치되는 구동 코일과, 상기 구동 코일과 대향하는 위치에 설정되는 직사각형의 영구자석으로서 상하 단부중 어느 한 중심부로부터 반대편의 양측 모서리를 향하는 분할선에 의해 얻어지는 세 영역중 중앙부와 양측 두 영역간에 서로 다른 극성으로 착자된 영구자석을 이루어진 광픽업용 액츄에이터 구동장치.The drive coil is formed on the front and rear surfaces of the bobbin provided with a lens consisting of a locus of the same shape of the tracking coil and the focusing coil, and a rectangular permanent magnet set at a position opposite to the drive coil. An optical pickup actuator driving apparatus comprising permanent magnets magnetized in different polarities between a central portion and two regions of three regions obtained by dividing lines facing opposite edges on opposite sides. 제1항에 있어서, 상기 구동 코일은 사각통형 구조로서 그 대각선이 영구자석의 극성 분할선과 일치하도록 형성됨을 특징으로 하는 광픽업용 액츄에이터 구동장치.The optical pickup actuator driving apparatus of claim 1, wherein the driving coil has a rectangular cylindrical structure, the diagonal line of which corresponds to a polarity dividing line of the permanent magnet. 렌즈가 구비되고 적어도 일측면에 수평의 광로를 취하는 빔의 통로를 형성하는 개구부가 형성된 보빈과, 보빈의 전후면 양측에 설치되는 구동 코일과, 구동 코일과 마주 보도록 형성된 영구자석으로 이루어진 광픽업용 액츄에이터.For optical pickup consisting of a bobbin provided with a lens and an opening for forming a passage of a beam taking a horizontal optical path on at least one side, a drive coil provided on both front and rear surfaces of the bobbin, and a permanent magnet formed to face the drive coil. Actuator. 제3항에 있어서, 구동 코일은 동일한 형상으로 이루어진 트랙킹 코일과 포커싱 코일의 적충체로 구성됨을 특징으로 하는 광픽업용 액츄에이터 .The optical pickup actuator of claim 3, wherein the driving coil comprises an opposing body of a tracking coil and a focusing coil having the same shape. 제3항에 있어서, 영구자석은 직사각형의 상하 단부중 어느 한 중심으로부터 반대편의 양측 모서리를 향하는 분할선에 의해 얻어진 세 분할영역중 중앙부와 양측 두영역간에 서로 다른 극성으로 착자된 것을 특징으로 하는 광픽업용 액츄에이터 .4. The light of claim 3, wherein the permanent magnet is magnetized with different polarities between the center and the two regions of the three divided regions obtained by the dividing line from the center of one of the upper and lower ends of the rectangle toward the opposite side edges. Actuator for pickup. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019960020980A 1996-06-12 1996-06-12 Actuator for optic pickup KR100220391B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960020980A KR100220391B1 (en) 1996-06-12 1996-06-12 Actuator for optic pickup

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960020980A KR100220391B1 (en) 1996-06-12 1996-06-12 Actuator for optic pickup

Publications (2)

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KR980004437A true KR980004437A (en) 1998-03-30
KR100220391B1 KR100220391B1 (en) 1999-09-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100421041B1 (en) * 2001-06-19 2004-03-04 삼성전자주식회사 A optical actuator, optical pickup and optical recording/reproducing apparatus
KR100421042B1 (en) * 2001-06-19 2004-03-04 삼성전자주식회사 Driving method for a optical actuator and optical actuator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100421041B1 (en) * 2001-06-19 2004-03-04 삼성전자주식회사 A optical actuator, optical pickup and optical recording/reproducing apparatus
KR100421042B1 (en) * 2001-06-19 2004-03-04 삼성전자주식회사 Driving method for a optical actuator and optical actuator

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KR100220391B1 (en) 1999-09-15

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