KR0118093Y1 - A dual focusing optical pick-up actuator - Google Patents
A dual focusing optical pick-up actuatorInfo
- Publication number
- KR0118093Y1 KR0118093Y1 KR92018719U KR920018719U KR0118093Y1 KR 0118093 Y1 KR0118093 Y1 KR 0118093Y1 KR 92018719 U KR92018719 U KR 92018719U KR 920018719 U KR920018719 U KR 920018719U KR 0118093 Y1 KR0118093 Y1 KR 0118093Y1
- Authority
- KR
- South Korea
- Prior art keywords
- focusing
- objective lens
- coil
- driving
- optical pickup
- Prior art date
Links
Classifications
-
- 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
- G11B7/0927—Electromechanical actuators for lens positioning for focusing only
-
- 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
- G11B7/12—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
본 고안은 CDP등에 이용되는 광픽업 엑튜에이터에 관한 것으로, 대물렌즈의 포커싱 구동을 위한 포커싱 코일과 자계회로를 갖는 광픽업 액튜에이터에 있어서, 대물렌즈의 또다른 포커싱구동을 위한 2차 포커싱 코일과 2차 포커싱 코일을 구동할 수 있는 제2자계회로를 구비하여 대물렌즈의 1차포커싱과 2차포커싱이 동시에 수행되어 외관에 대응하여 신속하고 안정된 포커싱이 이루어지므로써 특히 포터블 CDP에 적용가능한 것이다.The present invention relates to an optical pickup actuator used for a CDP, etc., and an optical focusing actuator for focusing driving of an objective lens and an optical pickup actuator having a magnetic field circuit, and a secondary focusing coil for further focusing driving of the objective lens and a second focusing coil. A second magnetic field circuit capable of driving the primary focusing coil is used to perform the primary focusing and the secondary focusing of the objective lens at the same time to achieve fast and stable focusing according to the appearance, so that the present invention is particularly applicable to the portable CDP.
Description
제1도는 종래의 광픽업 액튜에이터의 사시도.1 is a perspective view of a conventional optical pickup actuator.
제2도는 본 고안에 따른 이중포커싱 광픽업 액튜에이터의 사시도.2 is a perspective view of a double focusing optical pickup actuator according to the present invention.
제3도는 본 고안에 따른 이중포커싱 광픽업 액튜에이터의 측면도.3 is a side view of a double focusing optical pickup actuator according to the present invention.
*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
1 : 포커싱 코일2 : 트랙킹코일1: Focusing coil 2: Tracking coil
3 : 요크4 : 마그네트3: York 4: Magnet
7 : 렌즈홀더8 : 대물렌즈7: lens holder 8: objective lens
9 : 분리판10 : 2차 판스프링9: Separator 10: Secondary leaf spring
11 : 2차 포커싱 코일12 : 2차 마그네트11: 2nd focusing coil 12: 2nd magnet
13 : 2차 요크13: secondary yoke
본 고안은 컴팩트 디스크 플레이어(CDP) 레이저 디스크 플레이어(LDP) 등에 사용되는 광픽업 액튜에이터에 관한 것으로, 특히 1차 포커싱과 2차 포커싱을 동시에 수행하여 신속하고 안정된 포커싱을 수행하도록 한 이중 포커싱 광픽업 액튜에이터에 관한 것이다.The present invention relates to an optical pickup actuator used in a compact disc player (CDP) laser disc player (LDP) and the like, and in particular, a dual focusing optical pickup actuator which performs fast and stable focusing by simultaneously performing primary and secondary focusing. It is about.
중래의 광픽업 액튜에이터는, 제1도에 도시된 바와 같이 대물렌즈(8)와, 대물렌즈(8)를 지지하는 렌즈홀더(7), 대물렌즈(8)를 초점 방향으로 구동시키는 포커싱코일(1)과, 대물렌즈(8) 트랙방향으로 구동시키는 트랙킹코일(2)과, 포커싱코일(1) 및 트랙킹코일(2)에 자계회로를 구성시키는 요크(3)와, 고정자계의 발생원이 되는 마그네트(4)와, 포커싱코일(1) 및 트랙킹코일(2) 구동시 발생되는 진동을 흡수하기 위한 탄성체인 댐퍼(5)와, 포커싱코일(1) 및 트랙킹코일(2)을 지지하기 위한 외팔보 형상의 와이어(6)로 구성되어 있다.The optical pickup actuator of the related art has a focusing coil for driving the objective lens 8, the lens holder 7 supporting the objective lens 8, and the objective lens 8 in the focal direction as shown in FIG. 1), a tracking coil 2 for driving the objective lens 8 in the track direction, a yoke 3 for forming a magnetic field circuit in the focusing coil 1 and the tracking coil 2, and a source of stator magnetic fields. A magnet 4, a damper 5 which is an elastic body for absorbing vibration generated when driving the focusing coil 1 and the tracking coil 2, and a cantilever for supporting the focusing coil 1 and the tracking coil 2 It is comprised by the wire 6 of a shape.
즉 광픽업 액튜에이터는, 데이터가 기록된 디스크상에 광원에서 나온 빛을 대물렌즈(8)를 통해 포커싱코일(1)에 의해 대물렌즈(8)를 이동시켜 초점을 맞추게 하고 트랙킹코일(2)에 의해 대물렌즈(8)를 이동시켜 디스크의 트랙을 추종하도록 한다.In other words, the optical pickup actuator moves the objective lens 8 by the focusing coil 1 through the objective lens 8 to focus the light from the light source on the disk on which the data is recorded, and to the tracking coil 2. The objective lens 8 is moved to follow the track of the disc.
포커싱코일(1) 및 트랙킹코일(2)의 구동은, 상기 코일(1),(2)에 전류를 인가하면 포커싱코일(1), 마그네트(4), 요크(3)상으로 구성된 자계회로상에서, 포키싱코일(1)에 자계가 발생되고 포커싱코일(1)은 마그네트(4)에 의한 고정자계에 놓여져 있으므로 반발력이 생겨 포커싱코일(1) 자체가 움직이게 된다.The driving of the focusing coil 1 and the tracking coil 2 is carried out on a magnetic circuit composed of the focusing coil 1, the magnet 4, and the yoke 3 by applying a current to the coils 1 and 2. Since the magnetic field is generated in the focusing coil 1 and the focusing coil 1 is placed in the stator field by the magnet 4, a repulsive force is generated to move the focusing coil 1 itself.
트랙킹코일(2)의 경우도 마찬가지로 구동된다.The tracking coil 2 is similarly driven.
한편 상기 코일(1)(2)은 대물렌즈(8)를 감싸고 있는 렌즈홀더(7)에 부착되어 있으므로 상기 코일(1)(2)의 구동에 따라 대물렌즈(8)도 구동되는 것이다.On the other hand, since the coils 1 and 2 are attached to the lens holder 7 surrounding the objective lens 8, the objective lens 8 is also driven in accordance with the driving of the coils 1 and 2.
그러나 이와 같은 종래의 엑튜에이터는 포커싱의 경우, 충격등과 같은 외란이 발생된 경우에 포커싱코일(1)를 지지하는 와이어(6)가 외팔보 형식으로 포커싱 구동이 외란에 신속하게 대응하지 못하고, 대물렌즈가 큰 변위로 변동하는 문제점이 있었다.However, in the conventional actuator, in the case of focusing, when the disturbance such as impact or the like occurs, the wire 6 supporting the focusing coil 1 is cantilevered so that the focusing drive cannot quickly respond to the disturbance. There was a problem that the lens fluctuates with a large displacement.
따라서 본 고안은 이러한 종래기술의 문제점을 해결하기 위한 것으로, 2개의 포커싱코일을 이용하여 1차 포커싱 코일을 이용하여 1차 포커싱과 2차 포커싱을 동시에 수행하여 외란에 대응하여 신속하고 인정된 포커싱을 할 수 있는 이중 포커싱의 광픽업 액튜에이터의 제공을 목적으로 한다.Therefore, the present invention is to solve the problems of the prior art, by using two focusing coils to perform the first focusing and the second focusing at the same time by using the first focusing coil to quickly and recognized focusing in response to disturbance It is an object of the present invention to provide an optical pickup actuator with dual focusing.
이하, 첨부도면에 도시된 실시예에 의거하여 본고안으르 상세히 설명한다.Hereinafter, the present invention will be described in detail based on the embodiments shown in the accompanying drawings.
제2도 및 제3도는 본 고안의 액튜에이터를 나타낸 것이다.2 and 3 show the actuator of the present invention.
2차판스프링(10)은 보조 외팔보의 역할을 한다.The secondary leaf spring 10 serves as an auxiliary cantilever.
분리판(9)은 1차 외팔보 형식의 와이어(6)와 상기 2차 외팔보 형식의 판스프링(10)을 분리하게 된다.The separating plate 9 separates the wire 6 of the primary cantilever type and the leaf spring 10 of the secondary cantilever type.
2차 포키싱계를 이루는 2차 포커싱코일(11)은 분리판(9)의 외측에 부착된다.The secondary focusing coil 11 constituting the secondary focusing system is attached to the outside of the separating plate 9.
2차 마그네트(12)와 2차 요크(13)는 2차자계를 형성한다.The secondary magnet 12 and the secondary yoke 13 form a secondary magnetic field.
상기 실시예의 작용을 설명한다.The operation of the above embodiment will be described.
충격 등에 의한 외란이 발생한 경우 1차 포커싱코일(1) 및 2차 포커싱코일(11)에 전류를 흘리면, 2차 마그네트(12), 2차요크(13), 2차판스프링(10), 2차 포키싱 코일(11)로 구성된 2차 자계회로에 의해 2차 포커싱코일(11)이 구동되어 대물렌즈(8)의 1차적 포커싱이 이루어지면서, 마그네트(4), 요크(3), 와이어(6) 및 1차 포커싱 코일(1)로 구성된 1차 자계회로에 의해 1차 포커싱코일(1)이 구성되어 대물렌즈(8)의 2차적인 포커싱이 동시에 이루어진다.When a disturbance occurs due to an impact or the like, when a current flows through the primary focusing coil 1 and the secondary focusing coil 11, the secondary magnet 12, the secondary yoke 13, the secondary plate spring 10, and the secondary The secondary focusing coil 11 is driven by the secondary magnetic field circuit composed of the focusing coil 11 to perform primary focusing of the objective lens 8, and thus the magnet 4, the yoke 3, and the wire 6. The primary focusing coil 1 is constituted by the primary magnetic field circuit composed of the primary focusing coil 1 and the secondary focusing of the objective lens 8 simultaneously.
결국 대물렌즈(8)를 2개의 포커싱코일(1)(11)을 이용하여 구동하므로 보다 신속하고 안정된 포커싱이 이루어질 수 있다.As a result, since the objective lens 8 is driven using two focusing coils 1 and 11, faster and more stable focusing can be achieved.
이상에서 설명한 바와 같이, 본 고안에 다르면 2개의 포커싱 코일을 이용하여 1차 포커싱과 2차 포커싱을 동시에 수행함으로써 보다 신속하고 빠른 구동특성을 얻을 수 있다.As described above, according to the present invention, faster and faster driving characteristics can be obtained by simultaneously performing primary and secondary focusing using two focusing coils.
따라서, 특히 포터블 콤팩트 디스크 플레이어 등의 단점인 내충격성을 보완할 수 있어 원활하고 자동차용 CDP (Car Compact disk Player)에서 안정된 원음재생의 효과를 얻을 수 있다.Therefore, the impact resistance, which is a disadvantage of a portable compact disc player, in particular, can be compensated for, and smooth and stable sound reproduction can be obtained in a car compact disk player (CDP) for a car.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92018719U KR0118093Y1 (en) | 1992-09-30 | 1992-09-30 | A dual focusing optical pick-up actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92018719U KR0118093Y1 (en) | 1992-09-30 | 1992-09-30 | A dual focusing optical pick-up actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR940008473U KR940008473U (en) | 1994-04-18 |
| KR0118093Y1 true KR0118093Y1 (en) | 1998-05-15 |
Family
ID=19341004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR92018719U KR0118093Y1 (en) | 1992-09-30 | 1992-09-30 | A dual focusing optical pick-up actuator |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0118093Y1 (en) |
-
1992
- 1992-09-30 KR KR92018719U patent/KR0118093Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR940008473U (en) | 1994-04-18 |
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