KR970005983B1 - Optical pick-up suspension - Google Patents

Optical pick-up suspension Download PDF

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Publication number
KR970005983B1
KR970005983B1 KR1019940003666A KR19940003666A KR970005983B1 KR 970005983 B1 KR970005983 B1 KR 970005983B1 KR 1019940003666 A KR1019940003666 A KR 1019940003666A KR 19940003666 A KR19940003666 A KR 19940003666A KR 970005983 B1 KR970005983 B1 KR 970005983B1
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KR
South Korea
Prior art keywords
suspension
adjusting member
direction adjusting
objective lens
optical pickup
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KR1019940003666A
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Korean (ko)
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KR950025652A (en
Inventor
이광석
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대우전자 주식회사
배순훈
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Priority to KR1019940003666A priority Critical patent/KR970005983B1/en
Publication of KR950025652A publication Critical patent/KR950025652A/en
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Publication of KR970005983B1 publication Critical patent/KR970005983B1/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
    • 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

Abstract

The suspension of an optical pickup actuator for an optical disc player comprises: a focusing direction adjusting member(44) formed by folding downwardly the upper and lower portions of a thin metal material taking a cross shape and having a good elasticity; and a tracking direction adjusting member(50) formed by folding upwardly the left and right portions of the metal material and by inserting the left and right ends thereof into a coupling groove formed on the end portion of the inside of an objective holder(42), whereby the one end of the objective holder(42) is received to be crossed on the inside of the focusing direction adjusting member(44).

Description

광디스플레이어용 광픽업엑츄에어터의 서스펜션Suspension of Optical Pickup Actuator for Optical Display

제1도는 종래의 일예에 따른 광픽업장치의 사시도.1 is a perspective view of an optical pickup apparatus according to a conventional example.

제2도는 종래의 광픽업엑츄에이터의 서스펜션의 사시도.2 is a perspective view of a suspension of a conventional optical pickup actuator.

제3도는 본 발명에 따른 광디스크플레이어용 광픽업엑츄에이터의 서스펜션(Suspension)의 분리사시도.3 is an exploded perspective view of a suspension of an optical pickup actuator for an optical disc player according to the present invention.

제4도는 제3도의 결합상태를 나타내는 사시도.4 is a perspective view showing a coupling state of FIG.

제5도는 본 발명에 따른 광디스크 플레이용 광픽업엑츄에이터의 서스펜션의 작동상태를 나타낸 사시도이다.5 is a perspective view showing an operating state of the suspension of the optical pickup actuator for optical disc play according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

40 : 서스펜션 42 : 대물렌즈홀더40: suspension 42: objective lens holder

44 : 포커싱방향조정부재 50 : 트랙킹방향조정부재44: focusing direction adjustment member 50: tracking direction adjustment member

52 : 서스펜션 설치공 54 : 강성조절공52: suspension installation hole 54: rigidity adjustment hole

56 : 대물렌즈56: objective lens

본 발명은 광디스크플레이어용 광픽업엑츄에이터(Actuator)의 서스펜션에 관한 것으로, 보다 상세하게는 대물렌즈의 포커싱방향운동과 트랙킹방향운동에 대해 운동방향이외의 방향으로부터 외란이 적용되더라도 그 포커싱/트랙킹방향의 자유도에 의하여 정확히 수행될 수 있도록 하면서, 광픽업엑츄에이터의 크기에 따라 강성을 자유롭게 조절할 수 있도록 한 광디스크플레이어용 광픽업엑츄에이터의 서스펜션에 관한 것이다.The present invention relates to a suspension of an optical pickup actuator for an optical disc player, and more particularly, to the focusing / tracking direction of an objective lens even if disturbance is applied from a direction other than the movement direction with respect to the focusing direction motion and the tracking direction motion of the objective lens. The present invention relates to a suspension of an optical pick-up actuator for an optical disc player, which can be accurately performed by the degree of freedom, and which can freely adjust the rigidity according to the size of the optical pick-up actuator.

일반적으로, 미니디스크플레이어(MDP), 콤팩트디스크플레이어(CDP)나 레이저디스크플레이어(LDP)와 같은 광디스크플레이어에서는 턴테이블에 얹혀져 회전되는 디스크의 수직하방에서 그 디스크의 래디얼방향으로 직선이동하면서 디스크상의 원하는 트랙위치를 검출하고, 그 검출된 트랙위치에서는 디스크면상에 형성된 기록피트(Pit)에 레이저광을 입사시킨 다음, 그 반사광을 광학계를 통하여 검출하고, 그 검출된 반사광을 일정한 신호로 변환시키는 방법을 적용하여 디스크면상에 기록된 정보를 재생하는 리니어트랙킹방식의 광픽업엑츄에이터가 설치된다.In general, in an optical disc player such as a mini disc player (MDP), compact disc player (CDP), or laser disc player (LDP), the disc is placed on a turntable and moved linearly downward in the radial direction of the disc in the vertical direction of the disc being rotated. A method of detecting a track position, injecting a laser beam into a recording pit formed on a disk at the detected track position, detecting the reflected light through an optical system, and converting the detected reflected light into a constant signal. An optical pickup actuator of a linear tracking method is installed which reproduces the information recorded on the disk surface.

이와 같은 리니어트랙킹방식의 광픽업엑츄에이터(10)는 제1도에 도시된 바와 같이 중앙부에 레이저통과공이 형성된 베이스플레이트(12)상에 그 레이저통과공을 사이에 두고 전후방향으로 요크(14)가 설치디고, 그 요크(14)의 내측에는 영구자석(16)이 설치되는 한편, 상기 레이저통과공의 상측에는 디스크의 정보기록면에 레이저광을 집속시키기 위한 대물렌즈(18)와, 상기 대물렌즈(18)를 잡아주는 대물렌즈홀더(20)가 동일축상에 설치되며, 상기 대물렌즈홀더(20)의 전후방향 외측에는 정확한 트랙검출을 위해 상기 대물렌즈(18)의 래디얼방향으로 움직임을 제어하는 트랙킹조정코일(22), 그 좌우방향외측에는 디스크의 각편차(Angle Deviation) 미 편심도 등에 의하여 디스크와 광픽업사이의 거리변화가 발생할 때 디스크의 반사면이 초점 심도내에 들어오도록 하기 위한 대물렌즈(18)의 광축방향 움직임을 제어하는 포커싱조정코일(24)이 설치되며, 상기 대물렌즈홀더(20)의 양측면에는 상기 대물렌즈(18)의 광축 및 래디얼방향으로의 요동을 지지해줌과 동시에 외부로부터의 충격작용시 그 진동을 감쇄시켜주는 와이어형태의 서스펜션(26)이 설치된 구조로 이루어진다.As shown in FIG. 1, the linear tracking optical pickup actuator 10 has a yoke 14 in the front and rear direction with the laser through hole interposed therebetween on a base plate 12 having a laser through hole formed in the center thereof. In addition, a permanent magnet 16 is provided inside the yoke 14, while an objective lens 18 for focusing the laser light on the information recording surface of the disk above the laser passing hole, and the objective lens ( An objective lens holder 20 for holding 18 is installed on the same axis, and a tracking for controlling movement in the radial direction of the objective lens 18 for accurate track detection on the front and rear directions of the objective lens holder 20. The adjustment coil 22 and the outside of the left and right directions allow the reflective surface of the disk to fall within the depth of focus when a change in the distance between the disk and the optical pickup occurs due to the unbalance of the angle of the disc (Angle Deviation). A focusing adjustment coil 24 for controlling the movement of the objective lens 18 in the optical axis direction is installed, and both sides of the objective lens holder 20 support the optical axis and the fluctuation in the radial direction of the objective lens holder 20. At the same time, the suspension is made of a wire-shaped suspension 26 to attenuate the vibration when the impact from the outside.

그러나, 이와같은 종래의 광픽업엑츄에이터의 서스펜션은 와이어의 구조적 특성상 포커싱 및 트랙킹 조정시 정확히 그 포커싱/트랙킹방향의 자유도를 갖는 것이 아니라 모든 방향으로의 자유도를 갖게 되므로 운동방향이외의 방향에서의 외란이 작용할 때 회전병진운동이 발생하여 불안정하게 된다는 문제점이 있었다.However, since the suspension of the conventional optical pick-up actuator does not have the freedom of focusing / tracking direction precisely when focusing and tracking is adjusted due to the structural characteristics of the wire, disturbance in a direction other than the movement direction is caused. There was a problem that rotational movement occurs when the action is unstable.

이에 따라, 최근에는 제2도에 도시된 바와 같이, P.B.T(Poly Butylene Terephthalate)를 이용하여 대물렌즈 홀더(20)의 몸체부에 결합된 상태에서 상·하방향으로 텐션운동되면서 대물렌즈(18)를 광축방향으로 움직여주는 포커싱방향조정부재(28)와, 일단이 상기 포커싱방향조정부재(28)의 선단면에 부착되고 타단이 대물렌즈홀더(20)의 몸체부에 결합된 상태에서 대물렌즈(18)를 래디얼방향으로 움직여 주는 트랙킹방향조정부재(30)를 일체로 형성하여된 광픽업엑츄에이터의 서스펜션(32)이 제안되어 사용되고 있다.Accordingly, as shown in FIG. 2, the objective lens 18 is tensioned upward and downward in a state of being coupled to the body of the objective lens holder 20 using PBT (Poly Butylene Terephthalate). Focusing direction adjusting member 28 for moving in the optical axis direction, and one end is attached to the front end surface of the focusing direction adjusting member 28 and the other end is coupled to the body portion of the objective lens holder 20 The suspension 32 of the optical pickup actuator, which is formed integrally with the tracking direction adjusting member 30 for moving 18 in the radial direction, has been proposed and used.

그러나, 이와 같은종래의 광픽업엑츄에이터의 서스펜션(32)은 비교적 외란에는 강하나 형상이 복잡하고 사출시 상기 트랙킹방향조정부재(30)에 형성된 힌지부가 끊어질 염려가 크다는 문제점이 있었다.However, the suspension 32 of the conventional optical pickup actuator is relatively strong in disturbance, but the shape is complicated, and there is a problem that the hinge portion formed on the tracking direction adjusting member 30 is largely broken during injection.

본 발명은 이와 같은 종래의 문제점을 해결하기 위한 것으로, 대물렌즈의 포커싱방향운동과 트랙킹방향운동이 운동방향이외의 방향으로부터의 외란이 작용되더라도 그 포커싱/트랙킹방향의 자유도에 의하여 정확히 수행될 수 있도록 하면서, 내부구조를 단순화시킬 수 있도록 하며 자체강성조절을 가능하게 한 새로운 형태의 광디스크플레이어용 광픽업엑츄에이터의 서스펜션을 제공하고자 하는 데 목적이 있다.The present invention is to solve such a conventional problem, so that the focusing direction and tracking direction movement of the objective lens can be accurately performed by the degree of freedom of the focusing / tracking direction even if disturbance from a direction other than the movement direction is applied. In addition, the purpose of the present invention is to provide a suspension of the optical pickup actuator for a new type of optical disc player that can simplify the internal structure and enable self-rigidity control.

이와 같은 목적을 달성하기 위하여 본 발명은 십자형태의 탄성률이 양호한 얇은 금속재의 상하 대향부분을 후방으로 절곡하여 형성된 포커싱방향조정부재와, 상기 금속재의 좌우대향부분을 전방으로 절곡하고서 그 좌우양단은 대물렌즈홀더의 내측단부에 형성된 결합홈에 끼워서 형성된 트랙킹방향조정부재를 갖추어 구성되고, 상기 포커싱방향조정부재의 내측에 상기 대물렌즈홀더의 일단이 횡단하도록 수납되는 광디스크 플레이어용 광픽업엑츄에이터의 서스펜션을 제공하게 된다.In order to achieve the above object, the present invention provides a focusing direction adjusting member which is formed by bending the upper and lower facing portions of a thin metal material having a good elastic modulus of the cross shape to the rear, and bending the left and right facing portions of the metal material to the front and the left and right ends thereof are the objectives. And a tracking direction adjusting member formed by inserting into a coupling groove formed at an inner end of the lens holder, and providing a suspension of an optical pickup player for an optical disc player which is accommodated so as to traverse one end of the objective lens holder inside the focusing direction adjusting member. Done.

상기 서스펜션은 스테인레스 금속박편으로 형성되고, 상기 서스펜션을 구성하는 포커싱방향조정부재 및 트랙킹방향조정부재의 두께는 100-50㎛로 형성되며, 상기 서스펜션을 구성하는 포커싱방향조정부재 및 트랙킹방향조정부재상에는 서스펜션의 강성을 조절하기 위한 강성조절공이 형성된다.The suspension is formed of a stainless metal foil, the thickness of the focusing direction adjusting member and the tracking direction adjusting member constituting the suspension is formed to 100-50㎛, on the focusing direction adjusting member and the tracking direction adjusting member constituting the suspension Stiffness adjustment holes are formed to adjust the rigidity of the suspension.

이하, 첨부된 도면에 의하여 본 발명을 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

제3도 및 제4도는 본 발명에 따른 광픽업엑츄에이터의 서스펜션(40)이 대물렌즈홀더(42)로부터 분리된 상태를 나타내는 분리사시도와 그 결합상태사시도를 나타낸다. 본 발명에 따른 서스펜션(40)은 탄성률이 양호한 얇은 금속재를 십자형태로 형성한 다음, 그 교차되는 부분을 중심으로 수직형성부는 후반으로 절곡하여 포커싱방향조정부재(44)를 형성하고, 수평형성부는 전방으로 절곡한 후 좌우양단을 대물렌즈홀더(42)에 결합하여 트랙킹방향조정부재(50)를 형성하게 된다.3 and 4 show a separated perspective view and a coupled state perspective view showing a state in which the suspension 40 of the optical pickup actuator according to the present invention is separated from the objective lens holder 42. The suspension 40 according to the present invention forms a thin metal material having a good elastic modulus in the shape of a cross, and then the vertical forming portion is bent in the second half to form the focusing direction adjusting member 44 around the intersection thereof, and the horizontal forming portion After bending forward, the left and right ends are coupled to the objective lens holder 42 to form the tracking direction adjusting member 50.

즉, 본 발명에 따른 서스펜션(40)을 구성하는 포커싱방향조정부재(44)의 하부 외측단과 상부외측단은 각각 베이스플레이트(46)의 상면에 설치되는 육면체형의 지지부재(48)의 하단면과 상단면에 고정설치되고, 트랙킹방향조정부재(50)의 좌우 선단은 대물렌즈홀더(42)의 몸체에 형성된 서스펜션설치공(52)의 내면앞쪽에 형성된 결합홈에 끼워져 결합된다.That is, the lower outer end and upper outer end of the focusing direction adjusting member 44 constituting the suspension 40 according to the present invention, respectively, the lower end surface of the hexahedral support member 48 installed on the upper surface of the base plate 46. And fixed to the top surface, the left and right front end of the tracking direction adjustment member 50 is fitted into the coupling groove formed in the front of the inner surface of the suspension installation hole 52 formed in the body of the objective lens holder 42 is coupled.

한편, 상기 서스펜션(40)은 바람직하게 탄성률이 양호한 스테인레스금속재로 형성되고, 원하는 탄성을 얻기 위해 대략 100-500㎛의 두께로 형성된다.On the other hand, the suspension 40 is preferably formed of a stainless metal material having a good modulus of elasticity, and is formed to a thickness of approximately 100-500 mu m to obtain a desired elasticity.

한편, 상기 서스펜션(40)을 구성하는 포커싱방향조정부재(44) 및 트랙킹방향조정부재(50)상에는 서스펜션(40) 자체의 감성을 조절하기 위하여 소정위치에 다수개의 강성조절공(54)이 형성되며, 상기 강성조절공(54)이 수량 또는 크기를 변경하여 광픽업엑츄에이터의 크기에 따른 서스펜션의 감성이 조절될 수 있게 된다.On the other hand, on the focusing direction adjusting member 44 and the tracking direction adjusting member 50 constituting the suspension 40, a plurality of stiffness adjusting holes 54 are formed at a predetermined position to adjust the sensitivity of the suspension 40 itself. By changing the quantity or size of the rigidity adjustment hole 54, the sensitivity of the suspension according to the size of the optical pickup actuator can be adjusted.

상기한 본 설명의 광디스크플레이어용 광픽업엑츄에이터의 서스펜션의 작용에 대해 제5도를 참조하여 설명한다.The operation of the suspension of the optical pickup actuator for the optical disc player described above will be described with reference to FIG.

제4도에 도시된 바와 같이, 본 발명에 따른 서스펜션(40)이 대물렌즈홀더(42)에 결합설치된 상태에서 디스크를 펄레이어에 삽입하여, 작동시키면 광픽업엑츄에이터가 디스크의 수직하방에서 래디얼방향으로 직선 이동되면서 디스크상에 기록된 정보를 재생시키게 된다.As shown in FIG. 4, when the disk 40 is inserted into the pearl layer while the suspension 40 according to the present invention is coupled to the objective lens holder 42, the optical pickup actuator operates in the radial direction below the disk. The information recorded on the disc is played back while being linearly moved.

이때, 디스크의 각 편차 및 편심도 등에 의해 디스크와 광픽업엑츄에이터사이의 거리가 일정하게 유지되지 않고 계속해서 변하게 되는데, 그 발생되는 변화량은 광학계에서 포커스에러로 검출되어 포커스서보시스템을 작동시켜 대물렌즈(56)를 초점심도내에 들어오도록 한다. 이때, 대물렌즈(56)의 광축방향움직임은 제5도의 (a)에 도시된 바와 같이 베이스플레이트(46)에 고정설치되는 지지부재(48)에 의해 지지된 상태에서 서스펜션(40) 전체가 상하방향으로 휘어지는 작용에 의해 상하방향으로 자유도를 갖는 포커싱방향조정부재(44)에 이해서 지지안내된다.At this time, the distance between the disc and the optical pickup actuator does not remain constant due to the disc deviation and eccentricity of the disc. The amount of change is detected as a focus error in the optical system and the focus servo system is operated to operate the objective lens. Place (56) within the depth of focus. At this time, the optical axis direction movement of the objective lens 56 is supported by the support member 48 fixed to the base plate 46 as shown in (a) of FIG. The support is guided by the focusing direction adjusting member 44 having the degree of freedom in the vertical direction by the action of bending in the direction.

한편, 대물렌즈(56)의 트랙킹방향조정은 제5도의 (b)에 도시된 바와 같이 상기 포커싱방향조정부재(44)의 선단 양측면으로부터 전방으로 절곡되어 대물렌즈홀더(24)상의 서스펜션설치공(52) 내측면 앞쪽에 결합된 상태에서 좌우방향의 자유도를 갖는 트랙킹방향조정부재(50)에 의하여 이루어지는데, 광학계에서검출한 트랙킹에러 신호의 인가에 의하여 ㅌ랙킹서보시스템이 작동되면 자계중에 놓여있는 트랙킹조정코일이 래디얼방향으로 요동하게 되며, 이에 따라 상기 트캑킹방향조정부재(50)와 결합된 대물렌즈홀더(42)가 그 트랙킹방향조정부재(50)와 포커싱방향조정부재(44) 사이의 경계부를 한지점으로하여 좌우로 요동되고, 그 결과 대물렌즈(56)의 트랙킹조정이 이루어지는 것이다.On the other hand, the tracking direction adjustment of the objective lens 56 is bent forward from both sides of the front end of the focusing direction adjusting member 44 as shown in (b) of FIG. 5 so that the suspension mounting hole on the objective lens holder 24 ( 52) is made by a tracking direction adjusting member 50 having a left and right degree of freedom in the state coupled to the front of the inner surface. When the tracking servo system is operated by the application of the tracking error signal detected by the optical system, the tracking servo system is placed in the magnetic field. The tracking adjustment coil oscillates in the radial direction, so that the objective lens holder 42 coupled with the tracking direction adjustment member 50 is disposed between the tracking direction adjustment member 50 and the focusing direction adjustment member 44. The boundary portion is swung left and right as a point, and as a result, tracking adjustment of the objective lens 56 is performed.

상기한 구성을 갖는 본 발명에 따르면, 서스펜션이 광축방향의 자유도를 갖는 포커싱방향조정부재와 래디얼방향의 자유도를 갖는 트랙킹방향조정부재로 구성되기 때문에 작용방향의 방향에서 외란이 작용한다하더라도 정확한 위치조정이 가능하다는 효과 있으며, 십자형태의 얇은 금속재를 절곡하는 간단한 동작에 의하여 제조가 이루어지므로 구조 및 생산과정이 간단히 이루어지며, 제작시 광픽업엑츄에이터에 다른 서스펜션의 강성조절이 가능하므로 적절한 부품을 사용하여 제품에 대한 신뢰도를 높일 수 있다는 효과가 있다.According to the present invention having the above-described configuration, since the suspension is composed of a focusing direction adjusting member having a degree of freedom in the optical axis direction and a tracking direction adjusting member having a degree of freedom in the radial direction, accurate positioning is performed even if disturbance acts in the direction of the acting direction. This effect is possible, and because the manufacturing is made by simple operation of bending the cross-shaped thin metal material, the structure and the production process are simplified, and the rigidity of the other suspension can be adjusted to the optical pickup actuator at the time of manufacture. This can increase the reliability of the product.

Claims (4)

십자형태의 탄성률이 양호한 얇은 금속재의 상하 대향부분을 후방으로 절곡하여 형성된 포커싱방향조정부재(44)와, 상기 금속재의 좌우대향부분을 전방으로 절곡하고서 그 좌우양단은 대물렌즈홀더(42)의 내측단부에 형성된 결합홈에 끼워서 형성된 트랙킹방향조정부재(50)를 갖추어 구성되고, 상기 포커싱방향조성부재(44)의 내측에 상기 대물렌즈홀더(42)의 일단이 횡단하도록 수납되는 것을 특징으로 하는 광디스크플레이어용 광픽업엑츄에이터의 서스펜션.The focusing direction adjusting member 44 formed by bending the upper and lower facing portions of the thin metal material having a good modulus of elasticity in the cross shape and the left and right facing portions of the metallic material to the front and the left and right ends thereof are inside the objective lens holder 42. An optical disc comprising a tracking direction adjustment member 50 formed by being inserted into a coupling groove formed at an end, and housed so as to traverse one end of the objective lens holder 42 inside the focusing direction composition member 44. Suspension of the optical pickup actuator for the player. 제1항에 있어서, 상기 서스펜션(40)은 스테인레스 금속박편으로 형성하여 된 것을 특징으로 하는 광디스크플레이어용 광픽업엑츄에이터의 서스펜션.The suspension of an optical pickup actuator for an optical disc player according to claim 1, wherein the suspension (40) is formed of stainless metal flakes. 제1항에 있어서, 상기 서스펜션(40)을 구성하는 포커싱방향조정부재(44) 및 트랙킹방향조정부재(50)의두께는 100-50㎛로 형성하여 된 것을 특징으로 하는 광디스크플레이어용 광픽업엑츄에이터의 서스펜션.The optical pickup actuator according to claim 1, wherein the thickness of the focusing direction adjusting member (44) and the tracking direction adjusting member (50) constituting the suspension (40) is 100-50 占 퐉. Suspension. 제1항에 있어서, 상기 서스펜션(40)을 구성하는 포커싱방향조정부재(44) 및 트랙킹방향조정부재(50) 상에는 서스펜션(40)의 강성을 조절하기 위한 강성조절공(54)을 형성하여된 것을 특징으로 하는 광디스크플레이어용 광픽업엑츄에이터의 서스펜션.According to claim 1, On the focusing direction adjusting member 44 and the tracking direction adjusting member 50 constituting the suspension 40 is formed by adjusting the rigidity adjusting hole 54 for adjusting the rigidity of the suspension 40 Suspension of an optical pickup actuator for an optical disc player.
KR1019940003666A 1994-02-28 1994-02-28 Optical pick-up suspension KR970005983B1 (en)

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KR1019940003666A KR970005983B1 (en) 1994-02-28 1994-02-28 Optical pick-up suspension

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KR1019940003666A KR970005983B1 (en) 1994-02-28 1994-02-28 Optical pick-up suspension

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KR950025652A KR950025652A (en) 1995-09-18
KR970005983B1 true KR970005983B1 (en) 1997-04-22

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