JPS59221840A - Objective lens driving device of optical disc player - Google Patents
Objective lens driving device of optical disc playerInfo
- Publication number
- JPS59221840A JPS59221840A JP9712183A JP9712183A JPS59221840A JP S59221840 A JPS59221840 A JP S59221840A JP 9712183 A JP9712183 A JP 9712183A JP 9712183 A JP9712183 A JP 9712183A JP S59221840 A JPS59221840 A JP S59221840A
- Authority
- JP
- Japan
- Prior art keywords
- driving
- objective lens
- driving coil
- tracking direction
- holder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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
- G11B7/0933—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
- G11B7/0932—Details of sprung supports
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ディスク状の記録媒体に光スポットを投影し
て光学的に情報を読み取るディスクプレーヤの対物レン
ズ駆動装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an objective lens drive device for a disc player that projects a light spot onto a disc-shaped recording medium to optically read information.
従来例の構成とその問題点
一般にこの種の光デイスクプレーヤにおいて、正確に情
報を読み取るためには、ディスクのソリや振れに対して
対物レンズと情報トラック位置との距離を制御するフォ
ーカス制御と、情報トラックの偏心に対して対物レンズ
を追従制御するトラッキング制御を行なう必要があり、
そのためにフォーカス方向・トラッキング方向の対物レ
ンズ駆動装置が必要である。Conventional configurations and their problems In general, in this type of optical disk player, in order to read information accurately, focus control is required to control the distance between the objective lens and the information track position to prevent warping or wobbling of the disk. It is necessary to perform tracking control to control the objective lens to follow the eccentricity of the information track.
For this purpose, an objective lens driving device in the focusing direction and tracking direction is required.
従来は、対物レンズをフォーカス方向・トラッキング方
向に駆動するだめに別々の磁気回路を持ち、複雑な構造
をしているか、あるいはコイルを複雑な形状に曲げて構
成しているため、製造しにくく、また電気抵抗か太きい
だめ効率が悪かった。Conventionally, they had separate magnetic circuits to drive the objective lens in the focusing and tracking directions, had a complicated structure, or were constructed by bending a coil into a complicated shape, making it difficult to manufacture. Also, the efficiency was poor due to the large electrical resistance.
発明の目的
本発明は単純な磁気回路で、しかも造り易いコイルを用
いて安価で製造工数が少なく、効率の高い対物レンズ駆
動装置を提供することを目的としている。OBJECTS OF THE INVENTION It is an object of the present invention to provide a highly efficient objective lens driving device that uses a simple magnetic circuit and an easy-to-manufacture coil, is inexpensive, requires few manufacturing steps, and has high efficiency.
発明の構成
本発明は対物レンズを保持するホルダーにフォーカス方
向の駆動コイルを巻きつけるとともに、このホルダーの
両側面に１対ずつ合計４個の平面状のトラッキング方向
の駆動コイルを取付け、上記フォーカスカ向、トラッキ
ング方向の両駆動コイルを同−磁界内で駆動するように
したものである。Structure of the Invention The present invention involves winding a driving coil in the focusing direction around a holder that holds an objective lens, and attaching a total of four planar driving coils in the tracking direction, one pair on each side of this holder, to the above-mentioned focusing lens. Both drive coils in the direction and tracking direction are driven within the same magnetic field.
実施例の説明
第１図は本発明の一実施例を示すものであり、第２図は
その駆動部の詳細図である。DESCRIPTION OF THE EMBODIMENTS FIG. 1 shows an embodiment of the present invention, and FIG. 2 is a detailed view of its driving section.
対物レンズ１はホルダー２に接着されており、ホルダー
２にフォーカス方向の駆動コイル３が巻かれ、その両側
面には２対の０字形状のトラッキング方向の駆動コイル
４が接着されている。駆動コイル４は、その直線部が有
効な駆動部であり、その他の駆動に寄与し力い部分は電
気抵抗を小さくするためＲ形状になり、全体として０字
形状となっている。The objective lens 1 is bonded to a holder 2. A driving coil 3 in the focusing direction is wound around the holder 2, and two pairs of zero-shaped driving coils 4 in the tracking direction are bonded to both sides of the holder 2. The straight portion of the drive coil 4 is an effective driving portion, and the other powerful portions that contribute to driving are rounded to reduce electrical resistance, and the overall shape is a 0-shape.
ゴムチューブ５に被覆された４本の金属線６は一端がホ
ルター−２の穴２ａに嵌まって、ホルダー２に貼り付け
られたプリント基板子にハンダ付されており、他端はプ
リント基板８にハンダ付けされている。このプリント基
板８は、ネジ９を介して基台１０に固着はれている。基
台１ｏは磁性材料でできており、２個のマグネット１１
が接着され磁気回路を構成している。One end of the four metal wires 6 covered by the rubber tube 5 fits into the hole 2a of the holder 2, and is soldered to the printed circuit board affixed to the holder 2, and the other end is connected to the printed circuit board 8. is soldered to. This printed circuit board 8 is fixed to a base 10 via screws 9. The base 1o is made of magnetic material and has two magnets 11.
are glued together to form a magnetic circuit.
プ’Ｊ ｙト基板７にはフォーカス方向の駆動コイル３
の両端とトラッキング方向の駆動コイル４０両端がハン
ダ付けきれており、プリント基板７の銅箔を介して金属
線６とそれぞれ電気的に結合されている。The drive coil 3 in the focus direction is mounted on the PC board 7.
Both ends of the driving coil 40 in the tracking direction are completely soldered, and are electrically connected to the metal wire 6 via the copper foil of the printed circuit board 7.
プリント基板８にはリード線１２がノ・ンダ付けされて
おり、金属線６と電気的に結合されている。Lead wires 12 are soldered onto the printed circuit board 8 and are electrically coupled to the metal wires 6.
リード線１２に電流を供給すると、金掬線６を介してフ
ォーカス方向の駆動コイル３あるいはトラッキング方向
の駆動コイル４に電流が流れ、マグネット１１との電磁
作用によりホルダー２及び対物レンズ１がそれぞれの方
向に移動する。When a current is supplied to the lead wire 12, the current flows through the metal wire 6 to the drive coil 3 in the focus direction or the drive coil 4 in the tracking direction, and due to the electromagnetic interaction with the magnet 11, the holder 2 and the objective lens 1 are moved to their respective positions. move in the direction.
発明の効果
本発明によれば、フォーカス方向駆動とトラッキング方
向の駆動を同一の磁気回路内で行なうことができるので
、磁気回路が簡単であり、しかもトラッキング方向の駆
動コイルは単純な平面状のコイルの組み合わせで構成で
゛きるので簡単に作ることができ、また電気抵抗が小さ
いので効率も高いという優れた効果が得られる。Effects of the Invention According to the present invention, driving in the focus direction and driving in the tracking direction can be performed within the same magnetic circuit, so the magnetic circuit is simple, and the driving coil in the tracking direction is a simple planar coil. Since it can be configured by a combination of the following, it can be easily manufactured, and the excellent effect of high efficiency due to its low electrical resistance can be obtained.
第１図は本発明の一実施例の斜視図、第２図はその要部
の分解斜視図である。
１・・・・・・対物レンズ、２・・・・・・ホルダー、
３・・・・・・フォーカス方向の駆動コイル、４・・・
・・・トラッキング方向の駆動コイル、５・・・・ゴム
チューブ、６・・・・・・金り線、７・・・・プリント
基板、８・・・・・・プリント基板、９・・・・・・ネ
ジ、１０・・・・・・基台、１１・・・・・・マグネッ
ト、１２・・・・・・リード線。FIG. 1 is a perspective view of one embodiment of the present invention, and FIG. 2 is an exploded perspective view of the main parts thereof. 1...Objective lens, 2...Holder,
3... Drive coil in focus direction, 4...
...Drive coil in the tracking direction, 5...Rubber tube, 6...Gold wire, 7...Printed circuit board, 8...Printed circuit board, 9... ... Screw, 10 ... Base, 11 ... Magnet, 12 ... Lead wire.
Claims (1)
コのホルダーに巻かれたフォーカス方向の駆動コイルと
、このホル２゛−の両側面に１対ずつ固着された４個の
平面状のトラッキング方向の駆動コイル力・ら構成され
、上記フォーカス方向の駆動コイルと上記トラッキング
方向の駆動コイルを同一磁界内で駆動することを特徴と
する光デイスクプレーヤの対物レンズ駆動装置。an objective lens and a holter that holds this objective lens;
It consists of a driving coil in the focusing direction wound around the holder of the holder, and four planar driving coils in the tracking direction fixed in pairs on both sides of the holder. An objective lens driving device for an optical disk player, characterized in that a driving coil and the tracking direction driving coil are driven within the same magnetic field.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9712183A JPS59221840A (en) | 1983-05-31 | 1983-05-31 | Objective lens driving device of optical disc player |
| US09/120,799 USRE37084E1 (en) | 1983-05-31 | 1984-05-29 | Objective lens driving apparatus for optical disc player |
| DE8484902073T DE3469814D1 (en) | 1983-05-31 | 1984-05-29 | Apparatus for driving objective lens of optical disc player |
| PCT/JP1984/000275 WO1984004841A1 (en) | 1983-05-31 | 1984-05-29 | Apparatus for driving objective lens of optical disc player |
| US06/700,818 US4646283A (en) | 1983-05-31 | 1984-05-29 | Objective lens driving apparatus for optical disc player |
| EP84902073A EP0144445B1 (en) | 1983-05-31 | 1984-05-29 | Apparatus for driving objective lens of optical disc player |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9712183A JPS59221840A (en) | 1983-05-31 | 1983-05-31 | Objective lens driving device of optical disc player |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59221840A true JPS59221840A (en) | 1984-12-13 |
| JPH0517615B2 JPH0517615B2 (en) | 1993-03-09 |
Family
ID=14183732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9712183A Granted JPS59221840A (en) | 1983-05-31 | 1983-05-31 | Objective lens driving device of optical disc player |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59221840A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6186823U (en) * | 1984-11-09 | 1986-06-06 | ||
| JPS6459646A (en) * | 1987-08-31 | 1989-03-07 | Nippon Denki Home Electronics | Objective lens actuator for optical head |
| US4960321A (en) * | 1987-11-13 | 1990-10-02 | Kabushiki Kaisha Toshiba | Optical apparatus |
| JPH02144129U (en) * | 1989-05-09 | 1990-12-06 |
-
1983
- 1983-05-31 JP JP9712183A patent/JPS59221840A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6186823U (en) * | 1984-11-09 | 1986-06-06 | ||
| JPH0419615Y2 (en) * | 1984-11-09 | 1992-05-06 | ||
| JPS6459646A (en) * | 1987-08-31 | 1989-03-07 | Nippon Denki Home Electronics | Objective lens actuator for optical head |
| US4960321A (en) * | 1987-11-13 | 1990-10-02 | Kabushiki Kaisha Toshiba | Optical apparatus |
| JPH02144129U (en) * | 1989-05-09 | 1990-12-06 | ||
| JP2515776Y2 (en) * | 1989-05-09 | 1996-10-30 | パイオニア株式会社 | Optical pickup |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0517615B2 (en) | 1993-03-09 |
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