KR970006638Y1 - Actuator of optical pick-up - Google Patents
Actuator of optical pick-up Download PDFInfo
- Publication number
- KR970006638Y1 KR970006638Y1 KR92014471U KR920014471U KR970006638Y1 KR 970006638 Y1 KR970006638 Y1 KR 970006638Y1 KR 92014471 U KR92014471 U KR 92014471U KR 920014471 U KR920014471 U KR 920014471U KR 970006638 Y1 KR970006638 Y1 KR 970006638Y1
- Authority
- KR
- South Korea
- Prior art keywords
- actuator
- pickup device
- optical pickup
- yoke
- optical
- Prior art date
Links
Abstract
없음none
Description
제1도는 종래 광픽업장치의 사시도.1 is a perspective view of a conventional optical pickup device.
제2도는 본 고안에 따른 광픽업장치의 사시도.2 is a perspective view of the optical pickup device according to the present invention.
제3도는 제2도의 종단면도이다.3 is a longitudinal cross-sectional view of FIG.
*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
10 : 액츄에이터16 : 서스펜션부10: Actuator 16: Suspension part
20 : 요크(YOKE)22 : 연결고리20: YOKE 22: link
24 : 지지패널26 : 강선(WIRE)24: support panel 26: steel wire (WIRE)
28 : 브라켓(BRACET)28: Bracket
본 고안은 광픽업장치(OPTICAL PICK-UP)의 액츄에이터에 관한 것으로, 더욱 상세하게는 광디스크재생장치에서 대물렌즈를 광축과 평행인 포커싱(FOCUSING) 방향과, 광축과 수직인 트랙킹(TRACKING) 방향의 두 방향으로 구동시킬 수 있도록 한 광 픽업장치의 액츄에이터에 관한 것이다.The present invention relates to an actuator of an optical pick-up device, and more particularly, in an optical disc reproducing apparatus, an objective lens has a focusing direction parallel to the optical axis, and a tracking direction perpendicular to the optical axis. The present invention relates to an actuator of an optical pickup device capable of driving in two directions.
일반적으로 광픽업장치는 광디스크재생장치에 설치되어 광디스크기록매체상에 빛을 조사하고, 광기록매체로부터 반사되는 빛을 감지하여 광디스크상의 정보(PIT)를 독출하므로써 광기록매체에 기록된 데이터를 재생하는 것인바, 이러한 광픽업장치에서 기록된 정보, 즉 피트를 정확히 감지해내기 위해서는 조사되는 광의 초점이 디스크상에 정확히 맺도록 하는 것이 중요하다.In general, an optical pickup device is installed in an optical disc reproducing apparatus to irradiate light onto an optical disc recording medium, and detects light reflected from the optical recording medium to read data (PIT) on the optical disc to reproduce data recorded on the optical disc. In order to accurately detect the information recorded in the optical pickup apparatus, that is, the pits, it is important to make the focus of the irradiated light exactly on the disk.
이를 위하여 광픽업장치의 대물렌즈를 광축과 평행인 포커싱방향과 광축과 수직인 트랙킹방향의 두 축방향으로 구동시켜, 회전하는 광기록매체상에 형성된 나선 형상의 기록트랙을 정밀하게 추종할 수 있어야 하는 바, 이와같은 두 축 구동방식의 광픽업장치는 제1도에 도시된 바와 같이, 대물렌즈홀더(12)와 구동코일부(14), 서스펜션부(16), 자석(18) 및 요크(YOKE)(20) 등을 상호 결합시킨 구조로 이루어져 있다.For this purpose, the objective lens of the optical pickup device must be driven in two axial directions, a focusing direction parallel to the optical axis and a tracking direction perpendicular to the optical axis, so that it is possible to precisely follow the spiral recording track formed on the rotating optical recording medium. As shown in FIG. 1, the optical pickup device having the two-axis driving method includes the objective lens holder 12, the driving coil portion 14, the suspension portion 16, the magnet 18, and the yoke ( YOKE) 20 consists of a structure in which each other is coupled.
그러나, 상기한 두 축 구동방식의 광픽업장치에서 종래에는 서스펜션부의 가동부분의 무게중심을 단순히 트랙킹방향의 운동회전축상에만 위치시킴으로써 외부로부터 작용하는 트랙킹방향의 외란에 대해 양호한 진동특성을 나타내는 포커싱방향의 외란에 대해서는 취약하기 때문에 광픽업장치가 기울어지는 경우 대물렌즈의 초점이 원하는 위치로부터 벗어나는 현상인 자세차가 발생한다는 문제점이 있었고, 상기 서스펜션부(16)의 좌우측에 자석(18), 요크(20) 및 구동코일부(14)가 설치되기 때문에 구조가 복잡해진다는 문제가 있었다.However, in the optical pickup device of the two-axis drive type, the focusing direction which exhibits a good vibration characteristic against the disturbance of the tracking direction acting from the outside by simply placing the center of gravity of the movable part of the suspension part only on the axis of rotation of the tracking direction. Since the optical pickup device is inclined, the posture difference, which is a phenomenon in which the focus of the objective lens is out of a desired position, occurs, and the magnets 18 and the yoke 20 are disposed on the left and right sides of the suspension part 16. ) And the drive coil portion 14 are installed, there is a problem that the structure is complicated.
본 고안은 이와같은 문제점을 해결하기 위한 것으로 광픽업장치의 액츄에이터의 가동부분인 대물렌즈홀더와 서스펜션부의 무게중심을 트랙킹방향과 포커싱방향의 운동 회전축상에 위치시키고, 구동코일부, 요크, 자석 등을 서스펜션부의 후단에 설치하므로써 외부로부터 인가되는 어떤 방향의 외란에 대해서도 영향을 거의 받지 않도록 하고 외부 중력에 의한 자세차의 발생을 억제하여 액츄에이터제어상의 옵셋(OFF-SET)을 제거함과 동시에 액츄에이터의 구조를 간단히 한 새로운 형태의 광픽업장치의 액츄에이터를 제공하고자 하는데 목적이 있다.The present invention is to solve this problem, and the center of gravity of the objective lens holder and the suspension portion, which are the moving parts of the actuator of the optical pickup device, is placed on the axis of rotation of the tracking direction and the focusing direction, and the driving coil part, the yoke, the magnet, etc. Is installed at the rear end of the suspension part, so that it is hardly affected by any disturbance in any direction applied from the outside, suppresses the occurrence of posture difference by external gravity, and eliminates the offset in actuator control and the structure of the actuator. An object of the present invention is to provide an actuator of a new type of optical pickup device, which is simplified.
본 고안을 첨부된 예시도면에 의하여 상세히 설명하면 다음과 같다.The present invention will be described in detail with reference to the accompanying drawings.
본 고안은 제2도 및 제3도에 도시된 바와 같이, 대물렌즈홀더(12), 구동코일부(14), 서스펜션부(16), 자석(18) 및 요크(20)가 상호 결합된 형태의 광픽업장치의 액츄에이터에 있어서, 구동코일부(14), 자석(18) 및 요크(20)를 서스펜션부(16)의 후방에 설치하는 한편, 상기 서스펜션부(16)의 상하판 및 측판을 배제하고, 네 모서리에 연결고리(22)가 돌설된 다수개의 지지패널(24)을 전후방향으로 차례로 배열하고, 상기 각 연결고리(22)에 강선(26)을 끼워 상호 결합하되, 가운데 지지패널(24)은 별도의 브라켓(28)을 이용하여 베이스(30) 상에 고정하여된 특징을 갖는다.2 and 3, the objective lens holder 12, the driving coil portion 14, the suspension portion 16, the magnet 18 and the yoke 20 are coupled to each other. In the actuator of the optical pickup device of the present invention, the driving coil portion 14, the magnet 18 and the yoke 20 are provided at the rear of the suspension portion 16, while the upper and lower plates and side plates of the suspension portion 16 are mounted. Excluding, arranging a plurality of support panels 24 protruding from the four corners in the front and rear direction, and the steel wires 26 are fitted to each of the connecting rings 22 to each other, but the center support panel 24 has a feature that is fixed on the base 30 by using a separate bracket (28).
이와같은 본 고안에서 맨 뒤쪽 지지패널(24)의 내면에 통상의 웨이트 밸런스(WEGIT BALANCE)를 부착하여 액츄에이터 가동부의 무게중심을 중간의 지지패널(24)에 위치시킴으로써 외란에 강하고, 자세차가 없는 구조를 갖도록 한다.In the present invention, a normal weight balance is attached to the inner surface of the rear support panel 24 so that the center of gravity of the actuator movable part is positioned on the intermediate support panel 24 so that it is strong against disturbance and has no posture difference. To have.
한편, 본 고안에서 지지패널(24)을 상호 체결하는데 사용하는 강선(26)은 액츄에이터의 양단 즉, 대물렌즈 홀더(12)와 구동코일부(14)의 무게에 의한 처짐이 발생하지 않도록 강한 재질의 것을 사용하며, 액츄에이터(10)를 트랙킹방향과 포커싱방향의 양 방향으로 구동시키기 위해서 3개의 지지패널(24)의 연결고리(22)는 탄성계수가 작고, 제진특성(댐핑특성)이 우수한 플라스틱 재질로 형성한다.On the other hand, the steel wire 26 used to fasten the support panel 24 in the present invention is a strong material so that sag caused by the weight of both ends of the actuator, that is, the objective lens holder 12 and the driving coil portion 14 does not occur In order to drive the actuator 10 in both the tracking direction and the focusing direction, the connecting ring 22 of the three support panels 24 has a low elastic modulus and excellent vibration damping characteristics (damping characteristics). Form with material.
이와같은 본 고안의 광픽업장치를 적용하면, 액츄에이터의 가동부분 즉, 대물렌즈홀더와 서스펜션부의 무게중심이 포커싱방향과 트랙킹방향의 운동 회전축상에 위치하므로, 어떤 방향에서 작용하는 외란에 대해서도 영향을 거의 받지 않게 됨과 동시에 외부중력에 의한 자세차가 발생하지 않기 때문에 액츄에이터를 쉽게 제어할 수 있는 효과가 있으면, 구동코일부, 자석 및 요크 등을 서스펜션부의 후방에 설치하여 그 구조를 단순화시키므로써 작업성이 향상되는 효과가 있다.When the optical pickup device of the present invention is applied, the center of gravity of the movable part of the actuator, that is, the objective lens holder and the suspension part, is located on the rotational axis of movement in the focusing direction and the tracking direction, so that it affects the disturbance acting in any direction. Since it hardly receives and at the same time there is no posture difference caused by external gravity, it is easy to control the actuator, and the driving coil, magnet and yoke are installed at the rear of the suspension to simplify the structure. There is an effect to be improved.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92014471U KR970006638Y1 (en) | 1992-08-01 | 1992-08-01 | Actuator of optical pick-up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92014471U KR970006638Y1 (en) | 1992-08-01 | 1992-08-01 | Actuator of optical pick-up |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR940006372U KR940006372U (en) | 1994-03-22 |
| KR970006638Y1 true KR970006638Y1 (en) | 1997-06-27 |
Family
ID=19337865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR92014471U KR970006638Y1 (en) | 1992-08-01 | 1992-08-01 | Actuator of optical pick-up |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR970006638Y1 (en) |
-
1992
- 1992-08-01 KR KR92014471U patent/KR970006638Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR940006372U (en) | 1994-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3791914B2 (en) | 3-axis drive device for optical pickup actuator | |
| US5023861A (en) | Single stage tracking actuator apparatus for optical beam information storage drive system | |
| US20020150002A1 (en) | Optical pickup and method of assembling the optical pickup | |
| JP5046918B2 (en) | Pickup for accessing a mobile storage medium and drive having the pickup | |
| KR970006638Y1 (en) | Actuator of optical pick-up | |
| JPS6319945Y2 (en) | ||
| US6996039B2 (en) | Optical pick-up actuator | |
| KR19980077472A (en) | Objective lens drive | |
| JPH0471257B2 (en) | ||
| KR970006637Y1 (en) | Optical pick-up actuator | |
| JPH0562227A (en) | Objective lens driving device | |
| KR970002938Y1 (en) | Optical pick-up | |
| JPS6117230A (en) | Optical pickup | |
| KR960009384Y1 (en) | Object lens driving apparatus of optical pick up | |
| KR0162575B1 (en) | Optical pick up actuator for optical disk player | |
| KR100220965B1 (en) | A tracking apparatus of actuator | |
| KR950012204B1 (en) | Optical actuator | |
| JP2685840B2 (en) | Objective lens drive | |
| EP1939866B1 (en) | Pickup for accessing moving storage media and drive having the pickup | |
| KR0155102B1 (en) | A double object-lens of hinge type optical pick-up actuator | |
| JP2828288B2 (en) | Optical system drive | |
| KR100234267B1 (en) | Optical pickup assembly | |
| JPH0317837A (en) | Optical pickup drive in optical information recorder | |
| JP2000222752A (en) | Driving device for objective lens | |
| JPH0352125A (en) | Objective lens driver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| REGI | Registration of establishment | ||
| FPAY | Annual fee payment |
Payment date: 20060525 Year of fee payment: 10 |
|
| EXPY | Expiration of term |