KR20000003519A - Sliding axis type actuator for picking up light - Google Patents
Sliding axis type actuator for picking up light Download PDFInfo
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- KR20000003519A KR20000003519A KR1019980024769A KR19980024769A KR20000003519A KR 20000003519 A KR20000003519 A KR 20000003519A KR 1019980024769 A KR1019980024769 A KR 1019980024769A KR 19980024769 A KR19980024769 A KR 19980024769A KR 20000003519 A KR20000003519 A KR 20000003519A
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- lens holder
- coil
- magnet
- type actuator
- tracking coil
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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
- G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/04—Feeding or guiding single record carrier to or from transducer unit
- G11B17/05—Feeding or guiding single record carrier to or from transducer unit specially adapted for discs not contained within cartridges
- G11B17/053—Indirect insertion, i.e. with external loading means
- G11B17/056—Indirect insertion, i.e. with external loading means with sliding loading means
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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
- G11B7/0933—Details of stationary parts
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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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/127—Lasers; Multiple laser arrays
-
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Abstract
Description
본 발명은 슬라이딩 축방식 광픽업 액츄에이터에 관한 것으로서, 특히 렌즈 홀더를 회전축에 지지시키고 하나의 마그네트 만을 사용하여 렌즈 홀더를 구동시킴으로써, 부품 수를 줄이고 구조를 간단히 한 슬라이딩 축방식 광픽업 액츄에이터에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding axis type optical pickup actuator, and more particularly, to a sliding axis type optical pickup actuator which reduces the number of parts and reduces the structure by supporting a lens holder on a rotating shaft and driving the lens holder using only one magnet. .
일반적인 슬라이딩 축방식 광픽업 액츄에이터는 도 1에 도시한 바와 같이, 원반형의 몸체의 외주내에 레이저 통과공(13)을 상하로 관통되게 형성하여 대물렌즈(12)를 고정하고, 외주면에 다수의 권선 코일(20) 및 자성체(16)를 고정한 렌즈 홀더(10)와; 상기 렌즈 홀더(10)에 형성되는 축공(18)에 결합되는 회전축(38)을 중심에 고정하고, 권선 코일(20) 및 자성체(16)에 대응되게 마그네트(34,36)를 고정한 요크(30)로 구성된다.As shown in FIG. 1, a general sliding axis type optical pickup actuator is formed so as to penetrate a laser passage hole 13 up and down in the outer circumference of a disc-shaped body to fix the objective lens 12 and a plurality of winding coils on an outer circumferential surface thereof. A lens holder 10 to which the 20 and the magnetic body 16 are fixed; The yoke 30 fixing the rotation shaft 38 coupled to the shaft hole 18 formed in the lens holder 10 at the center and fixing the magnets 34 and 36 to correspond to the winding coil 20 and the magnetic body 16. It consists of
한편, 상기 회전축(38)은 테프론 코팅을 하여 마찰계수를 줄임으로써, 렌즈 홀더(10)의 회전력 손실을 줄이며 회전축(38)을 중심으로 회전 또는 상하로 슬라이딩할 수 있도록 하고, 상기 렌즈 홀더(10)의 측면에는 90°의 각도로 4분할된 위치에 각각 2개씩의 권선 코일(20) 및 1개의 자성체(16)을 고정하며, 상기 요크(30)의 내측면에는 상기 권선 코일(20) 및 자성체(16)에 대응되는 위치에 상하로 착자된 마그네트(34)와 좌우로 착자된 마그네트(36)를 각각 고정시켜 권선 코일(20)이 마그네트(34,36)의 자속에 의해 전자력을 발생시킴으로써 렌즈 홀더(10)를 구동시키도록 하였다.On the other hand, the rotating shaft 38 is coated with Teflon to reduce the friction coefficient, thereby reducing the loss of rotational force of the lens holder 10 and to be able to rotate or rotate up and down about the rotating shaft 38, the lens holder 10 On the side of the) is fixed two winding coils 20 and one magnetic body 16 in four divided positions at an angle of 90 °, and the winding coil 20 and the inner surface of the yoke 30 By fixing the magnet 34 magnetized up and down and the magnet 36 magnetized left and right at positions corresponding to the magnetic body 16, the winding coil 20 generates an electromagnetic force by the magnetic flux of the magnets 34 and 36. The lens holder 10 was driven.
상기에서 극성이 좌우로 분할된 마그네트(36)를 180°간격으로 배치되게 하여 이 마그네트(36)의 자속이 미치는 권선 코일(20)에서 좌우 방향으로 전자력이 발생되도록 함으로써, 대물렌즈(12)에서 형성한 레이저 광의 초점에 트래킹 에러가 발생하였을 때 렌즈 홀더(10)를 트래킹 방향으로 회전시켜 에러를 보정할 수 있도록 하였다. 또 상하로 극성이 분할된 마그네트(34)도 180°간격으로 배치되게 하여 이 마그네트(34)의 자속이 미치는 권선 코일(20)에서 상하 방향으로 전자력이 발생되도록 함으로써, 대물렌즈(12)에서 형성한 레이저 광의 초점에 포커스 에러가 발생하였을 때 렌즈 홀더(10)를 광축 방향으로 이동시켜 에러를 보정할 수 있도록 하였다.In the objective lens 12, the magnets 36 divided by the polarity are arranged at 180 ° intervals so that the electromagnetic force is generated in the left and right directions in the winding coil 20 under the magnetic flux of the magnet 36. When a tracking error occurred in the focal point of the formed laser light, the lens holder 10 was rotated in the tracking direction to correct the error. In addition, the magnets 34 whose polarity is divided up and down are also disposed at 180 ° intervals so that the electromagnetic force is generated in the winding coil 20 under the magnetic flux of the magnet 34 in the vertical direction, thereby forming the objective lens 12. When a focus error occurs at the focus of one laser light, the lens holder 10 is moved in the optical axis direction to correct the error.
또한 권선 코일(20)의 후방 렌즈 홀더(10)에는 4개의 자성체(16)를 각각 고정하여 마그네트(34,36)의 자속에 끌리는 힘으로 렌즈 홀더(10)를 일정 높이로 부상시켜 렌즈 홀더(10)가 상하 좌우로의 복원력을 갖도록 하는 서스펜션 역할을 하도록 하였다.In addition, the four magnetic bodies 16 are fixed to the rear lens holder 10 of the winding coil 20 to lift the lens holder 10 to a predetermined height by a force attracted to the magnetic flux of the magnets 34 and 36 to raise the lens holder ( 10) was to act as a suspension to have the restoring force up, down, left and right.
이러한 액츄에이터는 디스크의 하방에서 이동하는 픽업 베이스에 한 개의 홀로그램소자를 설치하고, 이 홀로그램소자로부터 수평으로 조사된 레이저 광이 렌즈 홀더(10)에 형성한 레이저 통과공(13)을 통하여 대물렌즈(12)에 수직으로 조사되도록 광경로를 변경하는 풀미러를 고정하였다. 따라서 렌즈 홀더(10)를 회전축(38)을 중심으로 회전시켜 렌즈 홀더(10)에 고정된 대물렌즈(12)를 홀로그램 소자의 광경로에 위치시킴으로써 디스크를 재생하였다.Such an actuator is provided with one hologram element in a pickup base moving below the disk, and through the laser passing hole 13 in which the laser light irradiated horizontally from the hologram element is formed in the lens holder 10, the objective lens ( The full mirror changing the light path was fixed so as to be irradiated perpendicularly to 12). Therefore, the disk was regenerated by rotating the lens holder 10 about the rotation axis 38 to position the objective lens 12 fixed to the lens holder 10 in the optical path of the hologram element.
그런데 상기와 같은 구조를 갖는 종래의 액츄에이터에 있어서 권선 코일(20)은 사각형상으로 권선되어 있으므로, 이 권선 코일(20)에서 구동력을 발생시키기 위하여는 수직방향으로 권선된 부분만을 이용할 수 있는데, 이와 같이 수직방향으로 권선된 부분에서도 전류의 방향이 반대가 되어 전자력이 상쇄되는 것을 방지하기 위하여 트래킹 조정용으로 사용될 경우 수직인 부분의 반, 포커스 조정용으로 사용될 경우 수평인 부분의 반만을 사용하였다.However, in the conventional actuator having the structure as described above, since the winding coil 20 is wound in a quadrangular shape, only a portion wound in the vertical direction may be used to generate a driving force in the winding coil 20. Likewise, in the part wound in the vertical direction, only half of the vertical part when used for tracking adjustment and half of the horizontal part when used for focus adjustment are used to prevent the electric force from canceling due to the direction of the current reversed.
따라서 자속이용 효율이 적어 구동력이 약하므로, 이를 보상하기 위하여 8개의 권선 코일(20)과 4개의 마그네트(34,36)을 사용함으로써 충분한 구동력이 발생되도록 하였다. 이러한 이유로 종래의 액츄에이터는 부품 수가 과다하고 이에 따른 조립공정이 복잡하였으므로, 부품 비용이 높고 조립성이 낮은 문제점이 있었다.Therefore, the driving force is weak because the magnetic flux utilization efficiency is low, so that sufficient driving force is generated by using eight winding coils 20 and four magnets 34 and 36 to compensate for this. For this reason, the conventional actuator has a problem that the component cost is high and the assembly is low because the number of parts is excessive and the assembly process is complicated accordingly.
본 발명은 종래의 문제점을 개선하기 위하여 안출한 것으로, 본 발명의 목적은 렌즈 홀더를 회전축에 지지시키고 하나의 마그네트 만을 사용하여 렌즈 홀더를 구동시킴으로써, 부품 수를 줄이고 구조를 간단히 하기 위한 것이다.SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems, and an object of the present invention is to reduce the number of parts and simplify the structure by supporting the lens holder on a rotating shaft and driving the lens holder using only one magnet.
도 1은 일반적인 광픽업 액츄에이터를 도시한 사시도.1 is a perspective view showing a general optical pickup actuator.
도 2는 본 발명의 광픽업 액츄에이터를 도시한 사시도.Figure 2 is a perspective view of the optical pickup actuator of the present invention.
〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>
110 : 요크 112 : 절곡편110: York 112: bending piece
114 : 회전축 116 : 조정구면114: rotating shaft 116: adjusting sphere
120 : 마그네트 140 : 렌즈 홀더120: magnet 140: lens holder
142 : 대물렌즈 143 : 원형공142: objective lens 143: circular hole
144 : 포커스 코일 146 : 트래킹 코일144: focus coil 146: tracking coil
148 : 장공 150 : 축공148: long hole 150: shaft work
152 : 자성체 154 : 피씨비152: magnetic material 154: PCB
본 발명은 중심에 원형공을 형성하여 대물렌즈를 고정하고, 일측에 축공을 형성하며, 타측에 원호형의 장공을 형성하여 트래킹 코일을 권선하고, 측면 둘레에 포커스 코일을 권선하며, 상기 트래킹 코일 및 포커스 코일이 교차하는 지점에 자성체를 고정한 렌즈 홀더와; 상기 렌즈 홀더의 축공에 삽입되는 회전축을 고정하고, 상기 트래킹 코일 및 포커스 코일의 외측에 위치하여 마그네트를 고정하는 절곡편을 형성한 요크로 구성되는 것을 특징으로 한다.The present invention is to form a circular hole in the center to fix the objective lens, to form a shaft hole on one side, to form an arc-shaped long hole on the other side of the winding winding coil, the focus coil around the side, the tracking coil A lens holder fixing the magnetic material at the point where the focus coils intersect; It is characterized in that it is composed of a yoke is fixed to the rotating shaft inserted into the shaft hole of the lens holder, and formed on the outside of the tracking coil and the focus coil to form a bent piece for fixing the magnet.
이러한 액츄에이터는 하나의 마그네트 만을 사용하여 렌즈 홀더를 구동하게 되므로, 구조가 간단하여 부품 비용을 절감하고 조립성을 향상시킬 수 있다.Since the actuator uses only one magnet to drive the lens holder, the structure is simple, thereby reducing component cost and improving assembly.
이하에서는 상기와 같은 액츄에이터의 양호한 실시예를 설명하여 본 발명을 더욱 상세히 한다.Hereinafter, the present invention will be described in more detail with reference to preferred embodiments of such actuators.
먼저 본 실시예의 구성은 도 2에 도시한 바와 같이, 중심에 원형공(143)을 형성하여 대물렌즈(142)를 고정하고, 일측에 축공(150)을 형성하며, 타측에 원호형의 장공(148)을 형성하여 트래킹 코일(146)을 권선하고, 측면 둘레에 포커스 코일(144)을 권선하며, 상기 트래킹 코일(146) 및 포커스 코일(144)이 교차하는 지점에 자성체(152)를 고정한 렌즈 홀더(140)와; 상기 렌즈 홀더(140)의 축공(150)에 삽입되는 회전축(114)을 고정하고, 상기 트래킹 코일(146) 및 포커스 코일(144)의 외측에 위치하여 마그네트(120)를 고정하는 절곡편(112)을 형성한 요크(110)로 구성된다.First, the configuration of the present embodiment, as shown in Figure 2, to form a circular hole 143 in the center to fix the objective lens 142, to form a shaft hole 150 on one side, arc-shaped long hole ( 148 to form the tracking coil 146, winding the focus coil 144 around the side, and the lens fixed to the magnetic body 152 at the intersection of the tracking coil 146 and the focus coil 144 A holder 140; The bending piece 112 which fixes the rotating shaft 114 inserted into the shaft hole 150 of the lens holder 140 and is located outside the tracking coil 146 and the focus coil 144 to fix the magnet 120. It is composed of a yoke (110) formed.
상기의 자성체(152)는 마그네트(120)의 자력에 끌려 렌즈 홀더(140)를 부상시킴으로써, 렌즈 홀더(140)가 마찰 없이 회전하도록 하는 역할을 한다.The magnetic body 152 is attracted to the magnetic force of the magnet 120 to float the lens holder 140, thereby serving to rotate the lens holder 140 without friction.
한편 렌즈 홀더(140)의 상면에는 트래킹 코일(146)과 포커스 코일(144)이 접속되는 피씨비(154)를 고정하여 전원 공급부로 연결되는 플렉시블 피씨비를 접속할 수 있도록 한다.Meanwhile, the PCC 154 to which the tracking coil 146 and the focus coil 144 are connected to the upper surface of the lens holder 140 may be fixed to connect the flexible PC connected to the power supply unit.
이하에서는 상기와 같은 구성으로 된 광픽업 액츄에이터의 작용을 설명한다.Hereinafter, the operation of the optical pickup actuator having the above configuration will be described.
픽업 베이스에 설치된 홀로그램소자에서 수평으로 조사된 레이저 광은 풀미러에서 수직으로 반사되어 렌즈 홀더(140)의 원형공(143)을 통하여 대물렌즈(142)에 수직으로 조사되고, 대물렌즈(142)를 통과한 레이저 광은 디스크 상에 집속되어 기록이 재생된다.The laser light irradiated horizontally from the hologram element installed in the pickup base is vertically reflected by the full mirror to be irradiated perpendicularly to the objective lens 142 through the circular hole 143 of the lens holder 140, and the objective lens 142. The laser light that has passed through is focused on the disc to reproduce the recording.
그리고 디스크의 재생중 대물렌즈(142)에서 형성한 레이저 광의 초점에 트래킹 에러가 발생할 때에는, 전원공급부에서 피씨비(154)를 통하여 마그네트(120)의 자속이 미치는 트래킹 코일(146)에 전원을 인가하여 수평 방향으로 전자력을 발생시킴으로써, 렌즈 홀더(140)를 회전축(114)을 중심으로 회전되게 하여 트래킹 에러를 보정한다.When a tracking error occurs at the focal point of the laser light formed by the objective lens 142 while the disc is playing, the power supply unit applies power to the tracking coil 146 under the magnetic flux of the magnet 120 through the PC 154. By generating the electromagnetic force in the horizontal direction, the lens holder 140 is rotated about the rotation axis 114 to correct the tracking error.
또 레이저 광의 초점에 포커싱 에러가 발생할 때에는 포커스 코일(144)에 전원을 인가하여 수직 방향으로 전자력을 발생시킴으로써, 렌즈 홀더(40)를 광축 방향으로 이동시켜 레이저 광의 포커스 에러를 보정한다.When a focusing error occurs at the focus of the laser light, power is applied to the focus coil 144 to generate an electromagnetic force in the vertical direction to move the lens holder 40 in the optical axis direction to correct the focus error of the laser light.
이와 같이 본 실시예의 액츄에이터는 렌즈 홀더(40)를 회전축(114)에 유동가능하게 지지시키고, 트래킹 코일(146)의 수직인 부분을 전체를 이용하여 한 개의 마그네트(120) 만으로 렌즈 홀더(142)를 구동시킬 수 있게 되어 전체적인 구조를 간단히 할 수 있다.As described above, the actuator of the present embodiment movably supports the lens holder 40 on the rotation shaft 114, and uses only one magnet 120 to use the entire vertical portion of the tracking coil 146 as the lens holder 142. It can be driven to simplify the overall structure.
상기의 실시예에서 설명한 바와 같이, 본 발명은 중심에 원형공(143)을 형성하여 대물렌즈(142)를 고정하고, 일측에 축공(150)을 형성하며, 타측에 원호형의 장공(148)을 형성하여 트래킹 코일(146)을 권선하고, 측면 둘레에 포커스 코일(144)을 권선하며, 상기 트래킹 코일(146) 및 포커스 코일(144)이 교차하는 지점에 자성체(152)를 고정한 렌즈 홀더(140)와; 상기 렌즈 홀더(140)의 축공(150)에 삽입되는 회전축(114)을 고정하고, 상기 트래킹 코일(146) 및 포커스 코일(144)의 외측에 위치하여 마그네트(120)를 고정하는 절곡편(112)을 형성한 요크(110)로 구성되는 액츄에이터로서, 렌즈 홀더(40)를 회전축(114)에 유동가능하게 지지시키고, 트래킹 코일(146)의 수직인 부분의 전체를 이용하여 한 개의 마그네트(120) 만으로 렌즈 홀더(142)를 구동시킬 수 있게 되어 전체적인 구조가 간단하게 됨으로써 부품 비용을 절감하고 조립성을 향상시킬 수 있는 효과가 있다.As described in the above embodiment, the present invention forms a circular hole 143 in the center to fix the objective lens 142, the shaft hole 150 is formed on one side, arc-shaped long hole 148 on the other side To form a winding winding tracking coil 146, winding a focus coil 144 around the side, and a lens holder fixing the magnetic body 152 at the point where the tracking coil 146 and the focus coil 144 cross ( 140); The bending piece 112 which fixes the rotating shaft 114 inserted into the shaft hole 150 of the lens holder 140 and is located outside the tracking coil 146 and the focus coil 144 to fix the magnet 120. Actuator composed of the yoke (110) formed with a), the lens holder (40) to support the rotatable shaft (114) to be movable, one magnet 120 using the entire vertical portion of the tracking coil 146 Since only the lens holder 142 can be driven, the overall structure is simplified, thereby reducing component costs and improving assembly performance.
Claims (2)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980024769A KR100265923B1 (en) | 1998-06-29 | 1998-06-29 | A slading shaft type optical pick-up actuator |
| JP10337607A JP2000020988A (en) | 1998-06-29 | 1998-11-27 | Optical pickup actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980024769A KR100265923B1 (en) | 1998-06-29 | 1998-06-29 | A slading shaft type optical pick-up actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20000003519A true KR20000003519A (en) | 2000-01-15 |
| KR100265923B1 KR100265923B1 (en) | 2000-09-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019980024769A KR100265923B1 (en) | 1998-06-29 | 1998-06-29 | A slading shaft type optical pick-up actuator |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2000020988A (en) |
| KR (1) | KR100265923B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030064494A (en) * | 2002-01-28 | 2003-08-02 | 삼성전기주식회사 | Optical Pick-up Actuator |
| KR20040019649A (en) * | 2002-08-28 | 2004-03-06 | 삼성전기주식회사 | Optical Pick-Up Actuator |
| KR100486272B1 (en) * | 2002-10-15 | 2005-04-29 | 삼성전자주식회사 | An optical pickup actuator and an optical disk drive using the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3874680B2 (en) * | 2002-03-19 | 2007-01-31 | 三菱電機株式会社 | Objective lens drive |
-
1998
- 1998-06-29 KR KR1019980024769A patent/KR100265923B1/en not_active IP Right Cessation
- 1998-11-27 JP JP10337607A patent/JP2000020988A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030064494A (en) * | 2002-01-28 | 2003-08-02 | 삼성전기주식회사 | Optical Pick-up Actuator |
| KR20040019649A (en) * | 2002-08-28 | 2004-03-06 | 삼성전기주식회사 | Optical Pick-Up Actuator |
| KR100486272B1 (en) * | 2002-10-15 | 2005-04-29 | 삼성전자주식회사 | An optical pickup actuator and an optical disk drive using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100265923B1 (en) | 2000-09-15 |
| JP2000020988A (en) | 2000-01-21 |
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