KR20040019649A - Optical Pick-Up Actuator - Google Patents

Optical Pick-Up Actuator Download PDF

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Publication number
KR20040019649A
KR20040019649A KR1020020051256A KR20020051256A KR20040019649A KR 20040019649 A KR20040019649 A KR 20040019649A KR 1020020051256 A KR1020020051256 A KR 1020020051256A KR 20020051256 A KR20020051256 A KR 20020051256A KR 20040019649 A KR20040019649 A KR 20040019649A
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KR
South Korea
Prior art keywords
bobbin
yoke
magnetic body
tracking
coil
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KR1020020051256A
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Korean (ko)
Inventor
김학규
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삼성전기주식회사
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Priority to KR1020020051256A priority Critical patent/KR20040019649A/en
Publication of KR20040019649A publication Critical patent/KR20040019649A/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
    • G11B7/0932—Details of sprung supports
    • 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
    • G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
    • 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
    • G11B7/08—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
    • G11B7/12—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

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: An optical pickup actuator is provided to reduce inverse electro-magnetic force by weakening magnetic force discharged through both sides of magnets by outer yokes, thereby increasing driving force in a tracking direction. CONSTITUTION: A yoke plate(10) has a pair of inner yokes(14) and a pair of outer yokes(20) extendedly formed to be symmetrical with each other, wherein a magnet(40) is attached to an inner surface of each outer yoke, and both ends of the outer yokes are bent to surround both sides of the magnets. A wire holder(30) is fixed at one end of the yoke plate. A bobbin(50) is arranged on the yoke plate and has an objective lens(52). A focusing coil is wound on an outer circumference of the bobbin. Tracking coils(56) are wound on a front surface and a rear surface of the bobbin. The bobbin is driven in a focusing direction and a tracking direction by electro-magnetic force between the focusing coil and the tracking coil, and the magnets. A plurality of wires(60) have one ends fixed at the bobbin and the other ends fixed at the wire holder.

Description

광 픽업 액추에이터{Optical Pick-Up Actuator}Optical Pick-Up Actuator

본 발명은 광 픽업 액추에이터에 관한 것으로, 보다 상세하게는 요크의 구조를 개선하여 전자기력의 효율을 향상시킨 광 픽업 액추에이터에 관한 것이다.The present invention relates to an optical pickup actuator, and more particularly, to an optical pickup actuator in which the structure of the yoke is improved to improve the efficiency of the electromagnetic force.

일반적으로 광 픽업장치는 광 드라이버의 데크에 마련된 주축과 부축에 조립되어 축방향을 따라 왕복운동하면서 각종 광 디스크에 수록된 신호를 재생하거나 광 디스크에 신호를 기록하는 장치로, 그 구성은 주축과 부축에 결합되어 축방향을 따라 왕복운동하는 베이스와, 베이스의 상면에 설치되고 베이스와 함께 이동하면서 입사되는 광 빔을 수렴하여 광 디스크의 한점으로 집속시키는 액추에이터로 이루어진다.In general, an optical pickup device is a device for reproducing signals recorded on various optical disks or recording signals on optical disks while being reciprocated along the axial direction and assembled on the main shaft and the minor shaft provided on the deck of the optical driver. It is composed of a base coupled to the reciprocating movement along the axial direction, and an actuator installed on the upper surface of the base and the light beam incident while moving with the base to converge to one point of the optical disk.

도 1과 도 2에는 종래의 광 픽업 액추에이터의 일례가 도시되어 있다.1 and 2 show an example of a conventional optical pickup actuator.

이를 참조하면, 종래의 액추에이터는 요크 플레이트(10)의 상부에 대물렌즈(52)가 구비된 보빈(50)이 와이어(60)를 통해 지지되어 포커싱 방향과 트랙킹 방향으로 미세하게 이동 가능하도록 구성된다.Referring to this, the conventional actuator is configured such that the bobbin 50 provided with the objective lens 52 on the yoke plate 10 is supported by the wire 60 to be finely moved in the focusing direction and the tracking direction. .

즉, 요크 플레이트(10) 상에는 소정의 간격을 두고 한 쌍의 외측 요크(12)와 내측 요크(14)가 상방향으로 연장 형성되고, 외측 요크(12)의 내면에는 자성체(40)가 부착 설치된다.That is, on the yoke plate 10, the pair of outer yokes 12 and the inner yokes 14 extend upwardly at predetermined intervals, and the magnetic body 40 is attached to the inner surface of the outer yoke 12. do.

또한, 요크 플레이트(10)의 일단부에는 와이어 홀더(30)가 설치된다.In addition, a wire holder 30 is provided at one end of the yoke plate 10.

그리고, 보빈(50)은 내측 요크(14)를 수용하도록 배치되며, 보빈(50)의 양측에 용접되어 보빈(50)을 지지하고 있는 와이어(60)의 단부는 와이어 홀더(30)에 고정된다.And, the bobbin 50 is arranged to receive the inner yoke 14, the end of the wire 60 is welded to both sides of the bobbin 50 to support the bobbin 50 is fixed to the wire holder 30. .

또한, 보빈(50)에는 자성체(40)와의 전자기력에 의해 포커싱방향 즉 상하방향과 트랙킹방향 즉 좌우방향으로 미세하게 이동시킬 수 있도록 포커싱 코일(54)과 트랙킹 코일(56)이 동선으로 감겨져있다.In addition, the focusing coil 54 and the tracking coil 56 are wound around the bobbin 50 in a copper wire so as to be minutely moved in the focusing direction, that is, the vertical direction and the tracking direction, that is, the left and right directions, by the electromagnetic force with the magnetic body 40.

이렇게 구성된 액추에이터는 와이어(60)를 통해 포커싱 및 트랙킹 코일로 전원이 인가되면 코일과 자성체의 전자기력에 의해 보빈(50)이 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 60, the bobbin 50 is driven in the focusing or tracking direction by the electromagnetic force of the coil and the magnetic material.

그런데, 종래의 액추에이터는 트랙킹 코일이 폐곡선 형태의 코일로 권선되어 있기 때문에 코일로 전류가 인가되면, 구동을 발생시키는 내측 부분에 구동방향 전류가 발생됨과 동시에 외측 부분에는 역방향 전류가 발생하게 된다.However, in the conventional actuator, since the tracking coil is wound in a closed curve coil, when a current is applied to the coil, a driving direction current is generated at the inner portion that generates the drive and a reverse current is generated at the outer portion.

즉, 트랙킹 방향의 구동은 자성체의 중앙부분의 강력한 자기력과 트랙킹 코일의 내측 부분 사이의 전자기력에 의해 이루어지는데, 자성체의 외측 가장자리의 미약한 자기력과 역방향 전류의 사이에서 구동방향과 반대방향의 전자기력이 발생되어 구동력을 저하시키는 문제점이 있었다.That is, the driving in the tracking direction is performed by the strong magnetic force in the center portion of the magnetic body and the electromagnetic force between the inner portion of the tracking coil. The weak magnetic force at the outer edge of the magnetic body and the reverse direction current cause the electromagnetic force in the opposite direction to the driving current. There was a problem in that the driving force is reduced.

본 발명은 상술한 바와 같이 제반되는 문제를 해결하기 위하여 안출한 것으로, 그 목적은 요크의 구조를 개선하여 역방향 전자기력을 감소시켜 구동력을 향상시킨 광 픽업 액추에이터를 제공하는데 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the problems described above, and an object thereof is to provide an optical pickup actuator which improves driving force by reducing the reverse electromagnetic force by improving the structure of the yoke.

상기 목적을 달성하기 위한 본 발명의 광 픽업 액추에이터는 서로 대칭되도록 한쌍의 내측 요크와 외측 요크가 상방향으로 연장 형성되고, 각각의 외측 요크의 내면에는 자성체가 부착되며, 외측 요크의 양단부는 자성체의 양측면을 감싸도록 절곡 형성된 요크 플레이트와; 요크 플레이트의 일단부에 고정 설치된 와이어 홀드와; 요크 플레이트의 상부에 배치되고, 대물렌즈를 구비하며, 외측 둘레를 따라 포커싱 코일이 권선되고, 전면과 후면에는 폐곡선 형태로 트랙킹 코일이 권선되며, 포커싱 및 트랙킹 코일과 자성체간의 전자기력에 의해 포커싱 방향과 트랙킹방향으로 미세하게 구동되는 보빈과; 일단은 보빈에 고정되고 타단은 와이어 홀드에 고정되어 보빈을 탄력적으로 지지하는 와이어를 포함하여 구성된다.Optical pickup actuator of the present invention for achieving the above object is a pair of inner yoke and outer yoke is formed extending in the upward direction to be symmetrical with each other, a magnetic body is attached to the inner surface of each outer yoke, both ends of the outer yoke of the magnetic body A yoke plate bent to surround both sides; A wire hold fixed to one end of the yoke plate; It is disposed on the upper part of the yoke plate, has an objective lens, a focusing coil is wound around the outer circumference, and a tracking coil is wound in the form of a closed curve on the front and rear sides, and the focusing direction and the electromagnetic force between the tracking coil and the magnetic body A bobbin finely driven in the tracking direction; One end is fixed to the bobbin and the other end is configured to include a wire fixed to the wire hold to support the bobbin resiliently.

도 1은 종래 광 픽업 액추에이터의 구성을 나타낸 분리 사시도,1 is an exploded perspective view showing the configuration of a conventional optical pickup actuator,

도 2는 종래 광 픽업 액추에이터를 나타낸 평면도,2 is a plan view showing a conventional optical pickup actuator,

도 3은 본 발명에 따른 광 픽업 액추에이터의 구성을 나타낸 분리 사시도,3 is an exploded perspective view showing the configuration of an optical pickup actuator according to the present invention;

도 4는 본 발명에 따른 광 픽업 액추에이터를 나타낸 평면도.4 is a plan view showing an optical pickup actuator according to the present invention.

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

10: 요크 플레이트14: 내측 요크10: yoke plate 14: inner yoke

20: 외측 요크30: 와이어 홀더20: outer yoke 30: wire holder

40: 자성체50: 보빈40: magnetic material 50: bobbin

52: 대물렌즈54: 포커싱 코일52: objective lens 54: focusing coil

56: 트랙킹 코일60: 와이어56: tracking coil 60: wire

이하, 첨부된 도면들을 참조하여 본 발명에 대해 상세히 설명하면 다음과 같다. 그리고, 종래와 동일한 구성요소에 대해서는 동일한 명칭 및 부호를 사용하여 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. The same components as in the prior art will be described using the same names and symbols.

도 3은 본 발명에 따른 광 픽업 액추에이터의 구성을 나타낸 분리 사시도이고, 도 4는 도 3의 평면도이다.3 is an exploded perspective view showing the configuration of the optical pickup actuator according to the present invention, Figure 4 is a plan view of FIG.

이를 참고하면, 본 발명에 따른 광 픽업 액추에이터는 요크 플레이트(10)의 상부에 대물렌즈(52)가 구비된 보빈(50)이 와이어(60)를 통해 지지되어 포커싱 방향과 트랙킹 방향으로 미세하게 조정되도록 구동된다.Referring to this, in the optical pickup actuator according to the present invention, the bobbin 50 having the objective lens 52 on the yoke plate 10 is supported through the wire 60 to finely adjust the focusing direction and the tracking direction. To be driven.

즉, 요크 플레이트(10) 상에는 소정의 간격을 두고 한 쌍의 내측 요크(14)와 외측 요크(20)가 상방향으로 연장 형성되고, 각각의 외측 요크(20)의 내면에는 자성체(40)가 부착 설치된다.That is, on the yoke plate 10, a pair of inner yoke 14 and outer yoke 20 extend upwardly at predetermined intervals, and a magnetic body 40 is formed on the inner surface of each outer yoke 20. Attached is installed.

그리고, 외측 요크(20)의 양단부는 서로 나란하게 각각 직교하는 방향으로 절곡되어 자성체(40)의 양측면을 감싸도록 구성된다. 이때, 외측 요크(20)의 양단부는 자성체(40) 양측면의 절반 이상을 감쌀 수 있도록 충분한 길이로 절곡 형성하는 것이 바람직하다.Then, both ends of the outer yoke 20 are bent in a direction orthogonal to each other in parallel to each other is configured to surround both sides of the magnetic body (40). At this time, both ends of the outer yoke 20 is preferably formed to be bent to a sufficient length to wrap more than half of the both sides of the magnetic body (40).

요크 플레이트(10)의 일단부에는 와이어 홀더(30)가 설치된다.One end of the yoke plate 10 is provided with a wire holder 30.

대물렌즈(52)가 구비된 보빈(50)은 요크 플레이트(10)의 상부에서 내측요크(14)를 수용하도록 배치되고, 외측 둘레를 따라 포커싱 코일(54)이 권선되며, 전면과 후면에는 중간부분을 중심으로 양측에 대칭되게 폐곡선 형태의 트랙킹 코일(56)이 권선된다.The bobbin 50 provided with the objective lens 52 is disposed to receive the inner yoke 14 at the top of the yoke plate 10, and the focusing coil 54 is wound along the outer circumference, and the front and rear surfaces have a middle. The tracking coil 56 in the form of a closed curve is wound symmetrically on both sides about the portion.

보빈(50)의 양측면에는 각각의 와이어(60)의 일단부가 용접에 의해 고정되고, 와이어(60)의 타단부는 와이어 홀더(30)에 고정되어 보빈을 탄력적으로 지지하게 된다.One end of each wire 60 is fixed to both sides of the bobbin 50 by welding, and the other end of the wire 60 is fixed to the wire holder 30 to elastically support the bobbin.

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.

와이어(60)를 통해 포커싱 코일(54)과 트랙킹 코일(56)로 전류가 인가되면, 코일과 자성체(40) 사이에 발생되는 전자기력에 의해 대물렌즈(52)가 구비된 보빈(50)이 포커싱 및 트랙킹 방향으로 미세하게 이동하게 된다. 즉, 전류가 흐르는 방향과 세기에 따라 보빈(12)의 이동방향 및 거리가 조절된다.When current is applied to the focusing coil 54 and the tracking coil 56 through the wire 60, the bobbin 50 provided with the objective lens 52 is focused by the electromagnetic force generated between the coil and the magnetic body 40. And finely move in the tracking direction. That is, the moving direction and distance of the bobbin 12 are adjusted according to the direction and intensity of the current flow.

특히, 본 발명은 트랙킹 구동시 외측 요크(20)가 자성체(40)의 양측면을 감싸고 있기 때문에 역방향 전자기력이 최소화되고, 이로 인해 액추에이터의 구동력은 향상된다.In particular, in the present invention, since the outer yoke 20 surrounds both sides of the magnetic body 40 during the tracking driving, the reverse electromagnetic force is minimized, thereby improving the driving force of the actuator.

예를 들면, 자성체(40)의 중앙부분에서 발생되는 자기력을 100％로 보았을 때 종래의 평판 요크에 부착된 자성체는 양측단부에서 측방향으로 발생되는 자기력이 50％이상을 차지하는 반면, 본 발명에 따른 홀더용 요크에 부착된 자성체는 양측단부에서 측방향으로 발생되는 자기력이 대략 20∼30％를 차지하게 된다.For example, when the magnetic force generated at the central portion of the magnetic body 40 is 100%, the magnetic body attached to the flat plate yoke has a magnetic force generated laterally at both end portions of 50% or more, The magnetic body attached to the yoke for the holder according to the present invention occupies approximately 20 to 30% of the magnetic force generated laterally at both ends.

따라서, 본 발명은 자성체의 양측방향으로 배출되는 자기력이 약하기 때문에 트랙킹 코일의 외측으로 흐르는 역방향 전류와 반응하지 않게 되어 역방향 전자기력이 발생되지 않으며, 이로 인해 구동방향의 전자기력은 상대적으로 효율이 증대되고 액추에이터의 감도가 향상되어 우수한 성능을 갖게 된다.Therefore, the present invention does not react with the reverse current flowing to the outside of the tracking coil because the magnetic force discharged in both directions of the magnetic material is weak, so that the reverse electromagnetic force is not generated, and thus the electromagnetic force in the driving direction is relatively increased and the actuator is increased. The sensitivity of the is improved to have excellent performance.

이상에서와 같이, 본 발명은 형상이 개선된 외측 요크에 의해 자성체의 양측방향으로 배출되는 자기력이 약해지기 때문에 역방향 전자기력이 최소로 감소되고, 이로 인해 구동방향 전자기력이 상대적으로 강해지므로 트랙킹 방향의 구동력이 증대되는 효과가 있다.As described above, in the present invention, since the magnetic force discharged in both directions of the magnetic body is weakened by the outer yoke with improved shape, the reverse electromagnetic force is reduced to a minimum, and as a result, the driving force in the tracking direction becomes relatively strong. This has the effect of increasing.

Claims (3)

서로 대칭되도록 한쌍의 내측 요크와 외측 요크가 상방향으로 연장 형성되고, 각각의 외측 요크의 내면에는 자성체가 부착되며, 외측 요크의 양단부는 자성체의 양측면을 감싸도록 절곡 형성된 요크 플레이트와;A pair of inner yokes and outer yokes extending upwards to be symmetrical with each other, and a magnetic body is attached to an inner surface of each outer yoke, and both ends of the outer yoke are bent to be bent to surround both sides of the magnetic body; 상기 요크 플레이트의 일단부에 고정 설치된 와이어 홀드와;A wire hold fixed to one end of the yoke plate; 상기 요크 플레이트의 상부에 배치되고, 대물렌즈를 구비하며, 외측 둘레를 따라 포커싱 코일이 권선되고, 전면과 후면에는 폐곡선 형태로 트랙킹 코일이 권선되며, 포커싱 및 트랙킹 코일과 상기 자성체간의 전자기력에 의해 포커싱 방향과 트랙킹 방향으로 미세하게 구동되는 보빈과;Disposed on the yoke plate, provided with an objective lens, a focusing coil is wound along an outer circumference, and a tracking coil is wound in a closed curve on the front and rear surfaces, and focused by an electromagnetic force between the focusing and tracking coil and the magnetic body. A bobbin finely driven in the direction and the tracking direction; 일단은 상기 보빈에 고정되고 타단은 상기 와이어 홀드에 고정되어 보빈을 탄력적으로 지지하는 와이어를 포함하여 구성된 것을 특징으로 하는 광 픽업 액추에이터.One end is fixed to the bobbin and the other end is fixed to the wire hold comprises an optical pickup actuator comprising a wire to support the bobbin elastically. 제1항에 있어서, 상기 외측 요크는 양단부가 서로 나란하게 직교하는 방향으로 절곡되어 자성체 양측면의 절반 이상을 감싸도록 구성된 것을 특징으로 하는 광 픽업 액추에이터.The optical pickup actuator of claim 1, wherein the outer yoke is configured to be bent in a direction orthogonal to each other in parallel to each other to surround at least half of both sides of the magnetic body. 요크에 부착된 자성체와 코일 사이에 발생되는 전자기력에 의해 구동되는 광 픽어베 액추에이터에 있어서,In the optical picker actuator driven by the electromagnetic force generated between the magnetic body and the coil attached to the yoke, 상기 요크의 양단부가 서로 나란하게 직교하는 방향으로 절곡되어 자성체 양측면의 절반 이상을 감싸도록 구성된 것을 특징으로 하는 광 픽업 액추에이터.Both ends of the yoke is bent in a direction orthogonal to each other parallel to the optical pickup actuator, characterized in that configured to surround at least half of both sides of the magnetic material.
KR1020020051256A 2002-08-28 2002-08-28 Optical Pick-Up Actuator KR20040019649A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7643386B2 (en) 2004-12-22 2010-01-05 Samsung Electronics Co., Ltd. Optical pickup actuator and optical recording and/or reproducing apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09167365A (en) * 1995-12-18 1997-06-24 Nec Corp Optical pickup device
KR19980029018A (en) * 1996-10-25 1998-07-15 이종수 Coin dispenser for automatic service equipment
KR19980077468A (en) * 1997-04-19 1998-11-16 김영환 DVD / CD combined objective driving device that fixes CD lens and DVD lens to 180 °
KR19990077683A (en) * 1998-03-12 1999-10-25 가타오카 마사타카 Optical pick-up and magnet mounting method therefor
KR20000003519A (en) * 1998-06-29 2000-01-15 전주범 Sliding axis type actuator for picking up light
KR20000003528A (en) * 1998-06-29 2000-01-15 전주범 Sliding axial type actuator for picking up light
KR20030064494A (en) * 2002-01-28 2003-08-02 삼성전기주식회사 Optical Pick-up Actuator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09167365A (en) * 1995-12-18 1997-06-24 Nec Corp Optical pickup device
KR19980029018A (en) * 1996-10-25 1998-07-15 이종수 Coin dispenser for automatic service equipment
KR19980077468A (en) * 1997-04-19 1998-11-16 김영환 DVD / CD combined objective driving device that fixes CD lens and DVD lens to 180 °
KR19990077683A (en) * 1998-03-12 1999-10-25 가타오카 마사타카 Optical pick-up and magnet mounting method therefor
KR20000003519A (en) * 1998-06-29 2000-01-15 전주범 Sliding axis type actuator for picking up light
KR20000003528A (en) * 1998-06-29 2000-01-15 전주범 Sliding axial type actuator for picking up light
KR20030064494A (en) * 2002-01-28 2003-08-02 삼성전기주식회사 Optical Pick-up Actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7643386B2 (en) 2004-12-22 2010-01-05 Samsung Electronics Co., Ltd. Optical pickup actuator and optical recording and/or reproducing apparatus

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