KR20030063647A - Optical pick-up actuator - Google Patents

Optical pick-up actuator Download PDF

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Publication number
KR20030063647A
KR20030063647A KR1020020003881A KR20020003881A KR20030063647A KR 20030063647 A KR20030063647 A KR 20030063647A KR 1020020003881 A KR1020020003881 A KR 1020020003881A KR 20020003881 A KR20020003881 A KR 20020003881A KR 20030063647 A KR20030063647 A KR 20030063647A
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KR
South Korea
Prior art keywords
blade
wire
wires
actuator
yoke
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KR1020020003881A
Other languages
Korean (ko)
Inventor
홍구
Original Assignee
삼성전기주식회사
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Priority to KR1020020003881A priority Critical patent/KR20030063647A/en
Publication of KR20030063647A publication Critical patent/KR20030063647A/en

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    • 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
    • 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
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs

Abstract

PURPOSE: An optical pick-up actuator is provided to prevent a blade supported by wires from rolling or being dynamically tilted when the blade is operated in a tracking direction. CONSTITUTION: An optical pick-up actuator includes a yoke(28), a blade(22), and four wires(100). A wire hold(26) is fixed to one end of the yoke. The blade is placed on the yoke and has an object lens(21). The blade is finely operated in a focusing direction and a tracking direction according to an electromagnetic force between focusing and tracking coils(23,24) and a magnetic body(27). The four wires are respectively set at the top and bottom of both sides of the blade. One end of each wire is fixed to the blade and the other end is fixed to the wire hold. The entire shape of the wires is a trapezoid.

Description

광 픽업 액추에이터 {Optical pick-up actuator}Optical pick-up actuators {Optical pick-up actuator}

본 발명은 광 픽업 액추에이터에 관한 것으로, 보다 상세하게는 블레이드를지지하는 4개의 와이어의 형상을 개선하여 제품의 롤링 특성을 개선시킨 광 픽업 액추에이터에 관한 것이다.The present invention relates to an optical pickup actuator, and more particularly, to an optical pickup actuator which improves the rolling characteristics of a product by improving the shape of four wires supporting the blade.

일반적으로 광 픽업장치는 광 드라이버의 데크패널에 마련된 주축과 부축에 조립되어 축방향을 따라 왕복운동하면서 각종 광 디스크에 수록된 신호를 재생하거나 광 디스크에 신호를 기록하는 장치로, 광 픽업장치는 주축과 부축에 결합되어 축방향을 따라 왕복운동하는 베이스와, 베이스의 상면에 설치되고 베이스와 함께 이동하면서 입사되는 광 빔을 수렴하여 광 디스크의 한점으로 집속시키는 액추에이터로 구성된다.In general, the optical pickup device is a device that is assembled to the main shaft and the minor shaft provided on the deck panel of the optical driver to reciprocate along the axial direction to reproduce the signals contained in the various optical disks or to record the signals on the optical disk. And a base coupled to the minor axis and reciprocating along the axial direction, and an actuator installed on the upper surface of the base and converging the incident light beam while moving together with the base to focus on one point of the optical disk.

도 1과 도 2를 참고하여 종래의 액추에이터를 설명하면, 상면에 대물렌즈(21)가 구빈된 블레이드(22)는 포커싱방향 즉 상하방향과 트랙킹방향 즉 좌우방향으로 미세하게 이동시킬 수 있도록 포커싱 코일(23)과 트랙킹 코일(24)이 동선으로 감겨져 있으며, 이들 코일의 주위에는 전자기력을 발생시키는 자성체(27)와 요크(28)가 구비된다.Referring to FIGS. 1 and 2, a conventional actuator 22 having an objective lens 21 hollowed on an upper surface of the blade 22 has a focusing coil so as to move finely in a focusing direction, that is, a vertical direction and a tracking direction, that is, a left and right direction. The 23 and the tracking coil 24 are wound in a copper wire, and a magnetic body 27 and a yoke 28 for generating an electromagnetic force are provided around these coils.

또한, 블레이드(22)는 트랙킹방향으로 수평되게 연장되는 4개의 와이어(25)를 통해 와이어 홀더(26)에 탄성적으로 지지된다. 즉, 블레이드(22)의 양측에는 각각 2개의 와이어(25) 일단이 납땜되고, 와이어(25) 타단은 와이어 홀더(26)에 고정되어 와이어(25)의 탄성력에 의해 블레이드(22)가 상하좌우로 미세하게 구동되는 것이 가능하게 된다.In addition, the blade 22 is elastically supported by the wire holder 26 through four wires 25 extending horizontally in the tracking direction. That is, one end of two wires 25 are soldered to both sides of the blade 22, and the other end of the wire 25 is fixed to the wire holder 26, so that the blades 22 are moved up, down, left and right by the elastic force of the wire 25. It becomes possible to be driven finely.

이렇게 구성된 액추에이터는 와이어(25)를 통해 포커싱 및 트랙킹 코일로 전원이 인가되면 코일과 자성체의 전자기력에 의해 대물렌즈(21)가 포커싱 또는 트랙킹 방향으로 구동된다.In the actuator configured as described above, when power is applied to the focusing and tracking coil through the wire 25, the objective lens 21 is driven in the focusing or tracking direction by the electromagnetic force of the coil and the magnetic material.

이처럼, 액추에이터는 특성상 포커싱 또는 트랙킹 방향의 자유도를 가질 뿐만 아니라, 롤링(Rolling), 피칭(Pitching), 요윙(Yewing)에 있어서도 자유도를 가지게 되므로 제어가 불가능한 동작의 형태가 발생되고, 이로 인해 정밀한 제어가 불가능한 문제점이 있었다.As such, the actuator not only has freedom in focusing or tracking direction, but also has freedom in rolling, pitching, and yawing, resulting in an uncontrollable form of motion, thereby providing precise control. There was an impossible problem.

상술한 문제점 가운데 롤링의 특성을 개선하기 위해 도 3에는 다른 예의 액추에이터가 도시되어 있다.Another example of an actuator is shown in FIG. 3 to improve the characteristics of rolling among the above mentioned problems.

이 액추에이터는 블레이드(22)를 지지하고 있는 양쪽의 와이어(30)가 수평이 아닌 일정한 각도를 갖고 경사지게, 즉 와이어 홀드(26)에서 블레이드(22) 방향으로 갈수록 좁아지는 사라리꼴 형상으로 설치되어 있기 때문에 롤링 각이 감소되고 롤링에 대한 강성이 높아지며, 따라서 롤링의 특성이 개선되는 장점이 있었다.The actuator is provided in a Sarariche shape in which both wires 30 supporting the blade 22 are inclined at a predetermined angle rather than horizontally, that is, narrowed toward the blade 22 from the wire hold 26. Because of this, the rolling angle is reduced and the rigidity against rolling is increased, and thus rolling characteristics are improved.

그러나, 이러한 액추에이터는 도 4에 도시되어 있는 바와 같이, 블레이드(22)가 트랙킹 방향으로 구동될 때 구동되는 방향으로 와이어(30)가 휘어지게 된다. 즉, 블레이드(22)가 좌측으로 움직일 경우에는 좌측 와이어가 압축을 받으면서 휘어지고, 블레이드(22)가 우측으로 움직일 경우에는 우측 와이어가 압축으 받으면서 휘어지는 현상이 발생된다.However, such an actuator, as shown in FIG. 4, causes the wire 30 to be bent in the driving direction when the blade 22 is driven in the tracking direction. That is, when the blade 22 moves to the left, the left wire is bent while being compressed, and when the blade 22 is moving to the right, the right wire is being compressed while being bent.

그런데, 블레이드(22)의 양측에는 각각 2개씩의 와이어가 구비되어 있기 때문에 각각의 와이어의 조립 공차에 따라 2개의 와이어의 휘어짐이 서로 간에 틀리거나 반대로 나타나는 경우가 발생된다.However, since two wires are provided on both sides of the blade 22, the bending of the two wires may be different from each other or vice versa depending on the assembly tolerances of the respective wires.

이로 인해 동적인 틸트(비틀림)가 발생되며, 따라서 제품의 성능이 저하되고불량률에 막대한 영향을 미치는 문제점이 있었다.This causes a dynamic tilt (torsion), and thus there is a problem that the performance of the product is degraded and have a huge impact on the defective rate.

본 발명은 상술한 바와 같이 제반되는 문제를 해결하기 위하여 안출한 것으로, 그 목적은 와이어에 지지되어 있는 블레이드가 트랙킹 방향으로 구동될 때, 롤링뿐만 아니라 동적인 틸트가 발생되지 않도록 개선함으로 제품의 성능을 향상시킨 광 픽업 액추에이터를 제공하는데 있다.The present invention has been made to solve the problems described above, the object is to improve the performance of the product by not only rolling but also dynamic tilt when the blade supported on the wire is driven in the tracking direction It is to provide an optical pickup actuator that has improved.

상기 목적을 달성하기 위한 본 발명에 따른 광 픽업 액추에이터는 일단에 와이어 홀드가 고정 설치된 요크와, 요크의 상부에 배치되고 대물렌즈를 구비하며 권선된 포커싱 코일 및 트렉킹 코일과 자성체 간의 전자기력에 의해 포커싱 방향과 트랙킹 방향으로 미세하게 구동되는 블레이드와, 내측 방향으로 만곡지게 형성되어 블레이드의 양측 상하부에 각각 1개씩 총 4개가 설치되고, 일단이 블레이드에 고정되며 타단은 와이어 홀드에 고정되되, 양측의 전체적인 형상이 와이어 홀드에서 블레이드 방향으로 갈수록 좁아지는 사다리꼴의 형상을 갖는 와이어로 구성된다.Optical pickup actuator according to the present invention for achieving the above object is a focusing direction by the yoke, the wire hold is fixed to one end, the yoke is disposed on top of the yoke and has an objective lens and the winding focusing coil and the electromagnetic force between the tracking coil and the magnetic material And four blades which are finely driven in the direction of tracking and tracking, and are formed to be curved inwardly, one at each of the upper and lower sides of the blade, one end is fixed to the blade and the other end is fixed to the wire hold, and the overall shape of both sides is This wire hold consists of a wire having a trapezoidal shape that narrows toward the blade.

도 1은 종래의 광 픽업 액추에이터의 일례를 도시한 사시도,1 is a perspective view showing an example of a conventional optical pickup actuator,

도 2는 도 1의 평면도,2 is a plan view of FIG.

도 3은 종래의 광 픽업 액추에이터의 다른 예를 도시한 평면도,3 is a plan view showing another example of a conventional optical pickup actuator,

도 4는 도 3에서 블레이드가 트랙킹 방향으로 구동된 상태를 나타낸 작동도,4 is an operation diagram showing a state in which the blade is driven in the tracking direction in FIG.

도 5는 본 발명에 따른 광 픽업 액추에이터의 구성을 도시한 사시도,5 is a perspective view showing the configuration of an optical pickup actuator according to the present invention,

도 6는 도 5의 평면도,6 is a plan view of FIG. 5;

도 7은 도 6의 블레이드가 트랙킹 방향으로 구동된 상태를 나타낸 작동도.7 is an operation view showing a state in which the blade of Figure 6 is driven in the tracking direction.

◎ 도면의 주요부분에 대한 부호의 설명 ◎◎ Explanation of symbols for main part of drawing

21: 대물렌즈22: 블레이드21: objective 22: blade

23: 포커싱 코일24: 트랙킹 코일23: focusing coil 24: tracking coil

26: 와이어 홀드27: 자성체26: wire hold 27: magnetic material

28: 요크100: 와이어28: yoke 100: wire

이하, 첨부된 도면들을 참조하여 본 발명에 대해 상세히 설명하면 다음과 같다. 그리고, 종래와 동일한 구성 부품에 대해서는 동일한 부호와 명칭을 사용하여 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Incidentally, the same components as in the prior art will be described using the same reference numerals and names.

도 5는 본 발명에 따른 광 픽업 액추에이터의 구성을 도시한 사시도이고, 도 6는 도 5의 평면도이며, 도 7은 도 6의 블레이드가 트랙킹 방향으로 구동된 상태를 나타낸 작동도이다.Figure 5 is a perspective view showing the configuration of the optical pickup actuator according to the present invention, Figure 6 is a plan view of Figure 5, Figure 7 is an operational view showing a state in which the blade of Figure 6 is driven in the tracking direction.

도 5와 도 6을 참고하면, 본 발명에서 상면에 대물렌즈(21)가 구빈된 블레이드(22)에는 별도의 제어부에 의해 포커싱방향 즉 상하방향과 트랙킹방향 즉 좌우방향으로 미세하게 이동시킬 수 있도록 포커싱 코일(23)과 트랙킹 코일(24)이 동선으로 감겨져 있으며, 이들 코일의 주위에는 전자기력을 발생시키는 자성체(27)와 요크(28)가 구비된다.Referring to FIGS. 5 and 6, in the present invention, the blade 22 having the objective lens 21 on the upper surface thereof may be finely moved in a focusing direction, ie, a vertical direction and a tracking direction, ie, a left and right direction by a separate controller. The focusing coil 23 and the tracking coil 24 are wound in a copper wire. A magnetic body 27 and a yoke 28 for generating electromagnetic force are provided around these coils.

또한, 블레이드(22)는 양측에 2개씩 총 4개의 와이어(100)를 통해 와이어 홀더(26)에 탄성적으로 지지된다. 즉, 4개의 와이어(100)의 일단은 블레이드(22)의 양측 상하부에 각각 1개씩 개별적으로 납땜되고, 와이어(100) 타단은 와이어 홀더(26)에 고정되어 와이어(100)의 탄성력에 의해 블레이드(22)가 상하좌우로 미세하게 구동되는 것이 가능하게 된다.In addition, the blade 22 is elastically supported by the wire holder 26 through a total of four wires 100, two on each side. That is, one end of the four wires 100 are individually soldered one by one on each of the upper and lower sides of the blade 22, and the other end of the wire 100 is fixed to the wire holder 26, so that the blades are resilient by the elastic force of the wire 100. It becomes possible to finely drive 22 up, down, left and right.

여기에서, 블레이드(22)를 지지하고 있는 양쪽의 와이어(100)가 수평이 아닌 일정한 각도를 갖고 경사지게, 즉 와이어 홀드(26)에서 블레이드(22) 방향으로 갈수록 좁아지는 사라리꼴 형상으로 설치된다.Here, both wires 100 supporting the blades 22 are installed in an inclined shape inclined at a constant angle, not horizontal, that is, narrowed toward the blades 22 from the wire hold 26.

또한, 와이어(100) 자체의 형상은 블레이드(22)가 트랙킹 방향으로 구동될 때 블레이드의 상하부에 설치된 와이어가 서로 간에 불규칙적으로 휘어지는 것을 방지하기 위해 블레이드(22)를 중심으로 내측방향으로 미리 만곡지게 형성되어 있다. 물론, 와이어(100)가 외측방향으로 만곡지게 형성할 수도 있다.In addition, the shape of the wire 100 itself is to be pre-curved inward with respect to the blade 22 in order to prevent the wires installed in the upper and lower portions of the blade irregularly bent each other when the blade 22 is driven in the tracking direction. Formed. Of course, the wire 100 may be formed to be bent in the outward direction.

이때, 블레이드(22)의 양측에 위치한 와이어(100)는 블레이드(22)를 중심으로 서로 대칭되게 형성되고, 블레이드의 상하부에 위치한 와이어는 서로 동일한 휘어짐을 갖도록 형성되는 것이 바람직하다.At this time, the wires 100 located on both sides of the blade 22 are formed symmetrically with respect to the blade 22, and the wires located in the upper and lower parts of the blade are preferably formed to have the same bending with each other.

이제, 이와 같이 구성된 본 발명의 작동 및 작용 효과를 설명한다.Now, the operation and operational effects of the present invention thus constructed will be described.

본 발명은 와이어(100)를 통해 포커싱 및 트랙킹 코일로 전원이 인가되면 별도의 제어부에 따라 코일과 자성체의 전자기력에 의해 대물렌즈(21)가 포커싱 또는 트랙킹 방향으로 자유롭게 구동된다.According to the present invention, when power is applied to the focusing and tracking coil through the wire 100, the objective lens 21 is freely driven in the focusing or tracking direction by the electromagnetic force of the coil and the magnetic body according to a separate controller.

또한, 본 발명은 블레이드(22)를 지지하고 있는 양쪽의 와이어(100)가 수평이 아닌 일정한 각도를 갖고 경사지게, 즉 와이어 홀드(26)에서 블레이드(22) 방향으로 갈수록 좁아지는 사라리꼴 형상으로 설치되어 있기 때문에 롤링 각이 감소되고 롤링에 대한 강성이 높아지며, 따라서 롤링의 특성이 개선되는 장점이 있었다.In addition, in the present invention, both wires 100 supporting the blades 22 are inclined at a constant angle rather than horizontally, that is, they are installed in a sararitic shape that becomes narrower from the wire hold 26 toward the blades 22. Since the rolling angle is reduced and the rigidity against rolling is increased, thus rolling characteristics are improved.

또한, 본 발명은 블레이드(22)를 지지하고 있는 양쪽의 와이어(100)가 내측 또는 외측 방향으로 미리 만곡지게 형성되어 있기 때문에 블레이드가 트랙킹 방향으로 구동될 때 동적인 틸트(비틀림) 현상이 발생되지 않게 되는 장점이 있다.In addition, in the present invention, since both wires 100 supporting the blade 22 are formed to be bent inward or outward, a dynamic tilting phenomenon is not generated when the blade is driven in the tracking direction. There is an advantage to not.

즉, 종래에는 와이어가 일자로 형성되어 있기 때문에 와이어의 조립 공차에 따라 각각의 와이어의 휘어짐이 서로 간에 틀리거나 반대로 나타나는 경우가 발생되었지만, 본 발명은 와이어가 미리 만곡지게 형성되어 있기 때문에 상하부에 배치되는 와이어의 우그러짐이 서로 간에 틀리거나 반대로 나타나지 않게 된다.That is, in the related art, since the wires are formed in a straight line, the warpage of each wire may be different from each other or vice versa according to the assembly tolerance of the wires. The warping of the wires is not wrong or opposite to each other.

이처럼 본 발명은 블레이드가 구동될 때 발생되는 동적 틸트가 개선되고, 이로 인해 제품 양산시 발생되는 불량률을 감소시키게 되며, 액추에이터의 수률 향상으로 광 기능의 성능이 향상된다.As described above, the present invention improves the dynamic tilt generated when the blade is driven, thereby reducing the defective rate generated during mass production, and improves the performance of the optical function by improving the yield of the actuator.

이상에서와 같이, 본 발명은 블레이드를 지지하는 와이어가 경사지게 설치되어 있기 때문에 롤링의 특성을 개선시킬 수 있고, 와이어가 내측 또는 외측으로 만곡지게 형성되어 있기 때문에 블레이드가 구동될 때 발생되는 동적 틸트 현상이 발생되지 않게 되며, 이로 인해 생산성 및 양산성이 향상되고, 액추에이터의 수률 향상으로 광 기능의 성능이 좋아지는 효과가 있다.As described above, the present invention can improve the rolling characteristics because the wire supporting the blade is inclined, and the dynamic tilt phenomenon generated when the blade is driven because the wire is formed to be curved inward or outward. This does not occur, thereby improving productivity and mass productivity, and the performance of the optical function is improved by improving the yield of the actuator.

Claims (2)

일단에 와이어 홀드가 고정 설치된 요크와,Yoke with wire hold fixed at one end, 상기 요크의 상부에 배치되고, 대물렌즈를 구비하며, 권선된 포커싱 코일 및 트렉킹 코일과 자성체 간의 전자기력에 의해 포커싱 방향과 트랙킹 방향으로 미세하게 구동되는 블레이드와,A blade disposed on the yoke and provided with an objective lens and finely driven in a focusing direction and a tracking direction by an electromagnetic force between the wound focusing coil and the tracking coil and the magnetic body; 내측 방향으로 만곡지게 형성되어 상기 블레이드의 양측 상하부에 각각 1개씩 총 4개가 설치되고, 일단이 상기 블레이드에 고정되며 타단은 상기 와이어 홀드에 고정되되, 양측의 전체적인 형상이 와이어 홀드에서 블레이드 방향으로 갈수록 좁아지는 사다리꼴의 형상을 갖는 와이어를 포함하여 구성된 것을 특징으로 하는 광 픽업 액추에이터.It is formed to be curved in an inner direction, a total of four are installed at each of the upper and lower sides of the blade, one end is fixed to the blade and the other end is fixed to the wire hold, the overall shape of both sides toward the blade from the wire hold Optical pickup actuator comprising a wire having a narrow trapezoidal shape. 제1항에 있어서, 상기 블레이드의 양측에 설치된 와이어는 블레이드를 중심으로 대칭되도록 외측방향으로 만곡지게 형성된 것을 특징으로 하는 광 픽업 액추에이터.The optical pickup actuator of claim 1, wherein the wires provided at both sides of the blade are curved outwardly so as to be symmetrical about the blade.
KR1020020003881A 2002-01-23 2002-01-23 Optical pick-up actuator KR20030063647A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100479614B1 (en) * 2002-08-09 2005-03-30 엘지전자 주식회사 Structure for supporting optical pick-up actuator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR880002148A (en) * 1986-07-17 1988-04-29 마쯔모또 도오루 Objective lens drive of optical pickup
US5629809A (en) * 1992-06-26 1997-05-13 Pioneer Electronic Corporation Optical pickup for reproducing information on a disc
JPH09190636A (en) * 1995-11-06 1997-07-22 Matsushita Electric Ind Co Ltd Optical pickup and its supporting method
JPH10269600A (en) * 1997-03-25 1998-10-09 Victor Co Of Japan Ltd Optical pickup device
JPH11312323A (en) * 1998-04-27 1999-11-09 Matsushita Electric Ind Co Ltd Objective lens driving device
KR20000043321A (en) * 1998-12-28 2000-07-15 전주범 Optical pickup actuator of wire driving type

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR880002148A (en) * 1986-07-17 1988-04-29 마쯔모또 도오루 Objective lens drive of optical pickup
US5629809A (en) * 1992-06-26 1997-05-13 Pioneer Electronic Corporation Optical pickup for reproducing information on a disc
JPH09190636A (en) * 1995-11-06 1997-07-22 Matsushita Electric Ind Co Ltd Optical pickup and its supporting method
JPH10269600A (en) * 1997-03-25 1998-10-09 Victor Co Of Japan Ltd Optical pickup device
JPH11312323A (en) * 1998-04-27 1999-11-09 Matsushita Electric Ind Co Ltd Objective lens driving device
KR20000043321A (en) * 1998-12-28 2000-07-15 전주범 Optical pickup actuator of wire driving type

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100479614B1 (en) * 2002-08-09 2005-03-30 엘지전자 주식회사 Structure for supporting optical pick-up actuator

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