JPH0517615B2 - - Google Patents
Info
- Publication number
- JPH0517615B2 JPH0517615B2 JP9712183A JP9712183A JPH0517615B2 JP H0517615 B2 JPH0517615 B2 JP H0517615B2 JP 9712183 A JP9712183 A JP 9712183A JP 9712183 A JP9712183 A JP 9712183A JP H0517615 B2 JPH0517615 B2 JP H0517615B2
- Authority
- JP
- Japan
- Prior art keywords
- holder
- objective lens
- circuit board
- printed circuit
- coils
- 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.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000011889 copper foil Substances 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
Landscapes
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、デイスク状の記録媒体に光スポツト
を投影して光学的に情報を読み取るデイスクプレ
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 Industrial Application The present invention relates to an objective lens driving device for a disk player that projects a light spot onto a disk-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、デイスクのソリ
や振れに対して対物レンズと情報トラツク位置と
の距離を制御するフオーカス制御と、情報トラツ
クの偏心に対して対物レンズを追従制御するトラ
ツキング制御を行なう必要があり、そのためにフ
オーカス方向・トラツキング方向の対物レンズ駆
動装置が必要である。Conventional configuration and its problems Generally, in this type of optical disk player,
In order to read information accurately, focus control is performed to control the distance between the objective lens and the information track position to account for disk warpage or shake, and tracking control is used to control the objective lens to follow the eccentricity of the information track. Therefore, an objective lens driving device in the focusing direction and tracking direction is required.
従来は、対物レンズをフオーカス方向・トラツ
キング方向に駆動するた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、また電気抵抗が大きいため効率が悪かつ
た。 Conventionally, they had separate magnetic circuits to drive the objective lens in the focusing direction and tracking direction, and had a complicated structure, or were constructed by bending a coil into a complicated shape, making it difficult to manufacture. Furthermore, 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 An object of the present invention is 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オ
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平面状のコイルを２個ず
つ取付けて形成した合計４個のトラツキング方向
の駆動コイルから構成され、上記フオーカス方
向、トラツキング方向の両駆動コイルを同一磁界
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 drive coil in the focus direction around a holder that holds an objective lens, and
The holder is composed of a total of four tracking direction drive coils formed by attaching two planar coils to each side of the holder, and is designed to drive both the focus direction and tracking direction drive coils within the same magnetic field. This is what I did.
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 EMBODIMENTS FIG. 1 shows an embodiment of the present invention.
FIG. 2 is a detailed diagram of the drive 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にフオ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Ｄ字形状のトラツキ
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な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Ｄ字形状と
なつている。 Objective lens 1 is glued to holder 2,
A focusing direction driving coil 3 is wound around the holder 2, and two pairs of D-shaped tracking direction driving coils 4 are bonded to both sides of the holder 2. The drive coil 4 has a straight section that is an effective drive section,
Other parts that do not contribute to driving have an R shape to reduce electrical resistance, and the overall shape is D-shaped.
ゴムチユーブ５に被覆された４本の金属線６は
一端がホルダー２の穴２ａに嵌まつて、ホルダー
２に貼り付けられたプリント基板７にハンダ付さ
れており、このプリント基板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に固着されている。基台１０は磁性材料
でできており、２個のマグネツト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 is fitted into the hole 2a of the holder 2, and is soldered to a printed circuit board 7 attached to the holder 2. ing. This printed circuit board 8 is fixed to a base 10 via screws 9. The base 10 is made of a magnetic material, and two magnets 11 are adhered to form a magnetic circuit.
プリント基板７にはフオーカス方向の駆動コイ
ル３の両端とトラツキング方向の駆動コイル４の
両端がハンダ付けされており、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。 Both ends of the drive coil 3 in the focus direction and both ends of the drive coil 4 in the tracking direction are soldered to the printed circuit board 7, and are electrically coupled 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がハンダ付け
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 to 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、金属線６を
介してフオーカス方向の駆動コイル３あるいはト
ラツキング方向の駆動コイル４に電流が流れ、マ
グネツト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 the holder 2 and objective lens 1 are moved in their respective directions due to electromagnetic interaction with the magnet 11. Move to.
発明の効果
本発明によれば、フオーカス方向駆動とトラツ
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
トラツ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.
また弾性支持部材のホルダー側の各端部とフオ
ーカス方向およびトラツキング方向の駆動コイル
の各端部をホルダーに取り付けたプリント基板の
銅箔にハンダ付けするだけで弾性支持部材のホル
ダーへの固定及び弾性支持部材と駆動コイルとの
電気的接続が確実、かつ簡単にできる。 In addition, the elastic support member can be fixed to the holder and the elastic Electrical connection between the support member and the drive coil can be made reliably and easily.
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
オーカス方向の駆動コイル、４……トラツキング
方向の駆動コイル、５……ゴムチユーブ、６……
金属線、７……プリント基板、８……プリント基
板、９……ネジ、１０……基台、１１……マグネ
ツト、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 tracking direction, 5... Rubber tube, 6...
Metal wire, 7... Printed circuit board, 8... Printed circuit board, 9... Screw, 10... Base, 11... Magnet, 12... Lead wire.
Claims (1)
持する直方体状のホルダーと、前記ホルダーに巻
かれたフオーカス方向の駆動コイルと、前記ホル
ダーの対向する両側面に平面状のコイルを取り付
けて形成した複数個のトラツキング方向の駆動コ
イルと、導電性を有する金属線からなり前記ホル
ダーを支持する４本の弾性支持部材と、前記基台
に設けられ前記フオーカス方向およびトラツキン
グ方向の駆動コイルに磁界を与える磁気回路とか
ら構成され、前記弾性支持部材の前記ホルダー側
の各端部と前記フオーカス方向およびトラツキン
グ方向の駆動コイルの各端部を前記ホルダーに取
り付けたプリント基板の銅箔にハンダ付けし、前
記弾性支持部材の前記ホルダー側の各端部と前記
フオーカス方向およびトラツキング方向の駆動コ
イルの各端部を前記プリント基板を介して電気的
に接続し、前記弾性支持部材と前記プリント基板
を介して前記フオーカス方向およびトラツキング
方向の駆動コイルに駆動電流を供給するようにし
た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。1. Formed by attaching a base, an objective lens, a rectangular parallelepiped-shaped holder that holds the objective lens, a focus direction drive coil wound around the holder, and planar coils attached to both opposing sides of the holder. A magnetic field is applied to a plurality of drive coils in the tracking direction, four elastic support members made of conductive metal wires that support the holder, and drive coils in the focus and tracking directions provided on the base. each end of the elastic support member on the holder side and each end of the focus direction and tracking direction drive coils are soldered to a copper foil of a printed circuit board attached to the holder; Each end of the elastic support member on the holder side and each end of the focus direction and tracking direction drive coils are electrically connected via the printed circuit board, and the elastic support member and the printed circuit board are connected to each other. An objective lens driving device for an optical disc player, characterized in that a driving current is supplied to the driving coils in the focusing direction and the tracking direction.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58097121A JPS59221840A (en) | 1983-05-31 | 1983-05-31 | Objective lens driving device of optical disc player |
| PCT/JP1984/000275 WO1984004841A1 (en) | 1983-05-31 | 1984-05-29 | Apparatus for driving objective lens of optical disc player |
| US09/120,799 USRE37084E1 (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 |
| US06/700,818 US4646283A (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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58097121A JPS59221840A (en) | 1983-05-31 | 1983-05-31 | Objective lens driving device of optical disc player |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59221840A JPS59221840A (en) | 1984-12-13 |
| JPH0517615B2 true JPH0517615B2 (en) | 1993-03-09 |
Family
ID=14183732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58097121A 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) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0419615Y2 (en) * | 1984-11-09 | 1992-05-06 | ||
| JP2614455B2 (en) * | 1987-08-31 | 1997-05-28 | 日本電気ホームエレクトロニクス株式会社 | Objective lens actuator for optical head |
| JPH01128238A (en) * | 1987-11-13 | 1989-05-19 | Toshiba Corp | Optical means supporting device |
| JP2515776Y2 (en) * | 1989-05-09 | 1996-10-30 | パイオニア株式会社 | Optical pickup |
-
1983
- 1983-05-31 JP JP58097121A patent/JPS59221840A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59221840A (en) | 1984-12-13 |
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