JPS6157046A - Objective lens driving device - Google Patents
Objective lens driving deviceInfo
- Publication number
- JPS6157046A JPS6157046A JP17667584A JP17667584A JPS6157046A JP S6157046 A JPS6157046 A JP S6157046A JP 17667584 A JP17667584 A JP 17667584A JP 17667584 A JP17667584 A JP 17667584A JP S6157046 A JPS6157046 A JP S6157046A
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- coil
- tracking
- drive
- magnetic circuit
- 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.)
- Pending
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
- G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、配録媒体ヒに光学的に記録された情報を読み
とるため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 Application of the Invention] The present invention relates to an objective lens driving device for reading information optically recorded on a recording medium.
〔発明の背景１ 光学式ディスクプレーヤにおいて使用される。[Background of the invention 1 Used in optical disc players.
対物レンズ駆動装置と１．て、例えば特開昭５７−。Objective lens drive device and 1. For example, JP-A-57-
２１０４５６号公報に示されるように、対物レンズ保−
′持筒をスラスト方向に摺動させてフォーカシ“ン゛グ
動作を行うとともＩｃ、対物レンズな摺動軸か。As shown in Japanese Patent No. 210456, objective lens maintenance
'The focusing operation is performed by sliding the holding cylinder in the thrust direction, and Ic is the sliding axis of the objective lens.
ら偏心して保持筒に取り付けることにより、対物レンズ
を保持筒を軸を中心に回動させてトラン。By attaching the objective lens eccentrically to the holding tube, the objective lens can be rotated by rotating the holding tube around the axis.
キング動作を行うものが知られている。このよＩ・・う
な対物レンズ駆動装置は、ヒ記対物しンズ保・持簡の外
周部に巻き付けられたフォーカス駆動の円筒状の第１の
コイルと、これに重ねて張り。One that performs a king motion is known. This objective lens drive device consists of a cylindrical first focus drive coil wrapped around the outer periphery of the objective lens holder, and a cylindrical first coil for focus driving.
付けられた方形状をしたトラッキング駆動用の。For tracking drive with a rectangular shape attached.
第２のコイルを備えている。また第１のコイル、１゜第
２のコイルは対物レンズ保持筒内側に設けら。A second coil is provided. Further, the first coil and the 1° second coil are provided inside the objective lens holding cylinder.
れたヨーク部に、外側の切欠部と対向するもう。The yoke part facing the outside notch part.
一つの切欠部を設けた磁気回路内でラジアル及。Radial and magnetic circuit in a magnetic circuit with one notch.
びスラスト方向にそれぞれ駆動されるように構成されて
（・石。The stone is configured to be driven in both the thrust and thrust directions.
−ところで、Ｅ−述した対物レンズ駆動装置にお“いて
は、方形状のトラッキング用の第２のコイ゛ルを複数個
、第１のコイルの円弧に合わせて成。By the way, in the objective lens driving device described above, a plurality of rectangular second tracking coils are formed to match the arc of the first coil.
形し、これらの成形されたコイルを結線し、円゛形の磁
気ギャップのすきまに接触することなく５動作するよ５
に、精密に対物レンズ保持筒に貼。shape and connect these molded coils so that they can operate without touching the gap in the circular magnetic gap.
Then, precisely attach it to the objective lens holding tube.
つつける必要がある。このため、コイルの組立゛や対物
レンズの保持筒の製作が非常に困難をき・たし量産性が
悪く、またヨークの形状が複雑な・ため、コストが割高
になるという欠点がある。１゜〔発明の目的〕
本発明の目的は、前述した欠点を是正した生。I need to poke it. For this reason, it is very difficult to assemble the coil and manufacture the objective lens holding tube, which makes mass production difficult, and because the shape of the yoke is complicated, the cost is relatively high. 1゜[Object of the Invention] The object of the present invention is to provide a product which corrects the above-mentioned drawbacks.
産性の優れた。ｆ、た信頼性の良い対物レンズ駆。Excellent productivity. f, reliable objective lens drive.
動装置を提供することにある。The objective is to provide a dynamic device for
〔発明の概要〕１５
本発明は、前記のトラッキング用の第２のコイルを駆動
部に設け、トラッキング方向駆動用の第１の磁気回路を
対物レンズを含む被駆動部に設けることにより、フォー
カシング方向駆動用の第２の磁気回路の形状を簡略化で
きるととｆＪ
もに、コイル部の組立を容易にすることができ゛コスト
を大薄く低減できる。また、トランキン。[Summary of the Invention] 15 The present invention provides the second coil for tracking in the driving section and the first magnetic circuit for driving in the tracking direction in the driven section including the objective lens. If the shape of the second magnetic circuit for driving fJ can be simplified, the assembly of the coil portion can be made easier, and the cost can be significantly reduced. Also, Trunkin.
グ方向駆動用の第１の磁気回路を前記支軸を中。A first magnetic circuit for driving in the vertical direction is inserted into the support shaft.
心にして、対物レンズと対向な位置に設けるこ。Place it in a position facing the objective lens.
とにより、トラッキング方向への質量バランス・を保つ
ためのバランスウェイトとして兼用でき・部品数を低減
でき、安価な対物レンズ駆動装置・を得ることが可能と
なる。Therefore, it can also be used as a balance weight for maintaining mass balance in the tracking direction, the number of parts can be reduced, and an inexpensive objective lens driving device can be obtained.
第１図は本発明による対物レンズ駆動装置の１゜縦断面
図、第２図は第１図の横断面図を示す。。FIG. 1 shows a 1° longitudinal cross-sectional view of an objective lens driving device according to the present invention, and FIG. 2 shows a cross-sectional view of FIG. 1. .
対物レンズ１は対物レンズ保持筒２に固定さ。The objective lens 1 is fixed to an objective lens holding tube 2.
れ、前記対物レンズ保持筒２にはフオーカシン。The objective lens holding tube 2 is equipped with a focus lens.
グ方向ｘへ駆動するためのフォーカシングコイ。A focusing coil for driving in the focusing direction x.
ル３およびトラッキング方向ｆｙｌへ駆動するためＩｆ
。If to drive in direction 3 and tracking direction fyl
.
の磁気回路（■）４が設けられている。また基台５には
対物レンズな摺動および回転させるための摺動軸６．フ
ォーカシング方向（ｘｉ駆動用の磁気回路（■）７およ
びトラッキング方向（ｙ）駆動用のトラッキングコイル
８が、トラッキングコイル固定枠９とともに設けられて
いる。前記フオーカ。A magnetic circuit (■) 4 is provided. The base 5 also has a sliding shaft 6 for sliding and rotating the objective lens. A magnetic circuit (■) 7 for driving in the focusing direction (xi) and a tracking coil 8 for driving in the tracking direction (y) are provided together with a tracking coil fixing frame 9. The focuser.
レンズコイル３は、磁気回路（■）７の磁気空隙中。The lens coil 3 is in the magnetic gap of the magnetic circuit (■) 7.
に前記トラッキングコイル８は磁気回路（■）４の。The tracking coil 8 is a magnetic circuit (■) 4.
磁気空隙中に介在し、それぞれのコイルの巻き。Each coil winding is interposed in a magnetic air gap.
端は、基板１０に接続されている。さらに基板１０５に
は電流供給用の端子１１が接続されているため、・前記
端子１１１ＣＷ流を流すことにより、対物レン・ズをフ
ォーカシング方向およびトラッキング方・向へ駆動可能
となる。The end is connected to the substrate 10. Furthermore, since the terminal 11 for supplying current is connected to the substrate 105, the objective lens can be driven in the focusing direction and the tracking direction by supplying the current CW to the terminal 111.
ヒ記のように被駆動部にフォーカシングコイ宜〇ル３を
駆動部にトラッキングコイル８を設けた。As shown in the following, a focusing coil 3 is provided in the driven part and a tracking coil 8 is provided in the driving part.
構造を有する対物レンズ駆動装置は、トラツキ。The objective lens drive device has a structure that causes trouble.
ングコイルの組立が容易であるとともに、コイ。It is easy to assemble the coil, and the coil is easy to assemble.
ル巻き端の処理が確実に行えるため、安価でか。It is inexpensive because the end of the roll can be treated reliably.
つ信頼性を向トさせることがで鎗る。 １５また
磁気回路（■）４を摺動軸６を中心として対物レンズｌ
と対向する位置に設定し、磁気回路（■）４の質量をト
ラッキング方向への質量バランスが保たれるようなもの
にすれば、対物レンズ駆動装置全体を高速でトラッキン
グ方向へ移動しても摺動軸６を中心とした回転が起こら
ない。゛従って、バランスをとるためのバランスウニ。The key is to improve reliability. 15 Also, the magnetic circuit (■) 4 is connected to the objective lens l with the sliding shaft 6 as the center.
If the mass of the magnetic circuit (■) 4 is set in such a way that the mass balance in the tracking direction is maintained, sliding will not occur even if the entire objective lens drive device is moved at high speed in the tracking direction. Rotation around the moving axis 6 does not occur.゛Therefore, balance sea urchin for balance.
イトを別途に取り付ける必要がなくなるため、。This eliminates the need to install a separate light.
部品点数を少くでき、かつ性能を向上させるこ。This reduces the number of parts and improves performance.
とが出来る。 ５〔発
明の効果〕
本発明によれば、対物レンズ駆動装置の被駆・動部の構
造の簡略化、トラッキングコイル組立・の容易化および
コイル巻き端の確実な処理が行・えるようになり、量産
性の向−ヒ、コスト低減おｌｕよび信頼性を向、ヒさせ
ることができる。I can do that. 5 [Effects of the Invention] According to the present invention, the structure of the driven/moving part of the objective lens driving device can be simplified, the tracking coil can be easily assembled, and the winding ends of the coil can be reliably processed. It is possible to improve mass production, reduce costs, and improve reliability.
またトランキング方向駆動用の磁気回路をパ。In addition, the magnetic circuit for driving in the trunking direction is equipped.
ランスウェイトと兼用でき、部品点数を低減で。Can also be used as a run weight, reducing the number of parts.
きる。 ゛Wear. ゛
第１図は本発明による対物レンズ駆動装置の縦断面図、
第２図は第１図の横断面図を示す。
１・・・対物レンズ
３・・・フォーカシングコイル
４・・・磁気回路（！１１．７・・・磁気回路（１）８
・・・トラッキングコイル◎
！５
７・
第１図
菓Ｚ図FIG. 1 is a longitudinal sectional view of an objective lens driving device according to the present invention;
FIG. 2 shows a cross-sectional view of FIG. 1... Objective lens 3... Focusing coil 4... Magnetic circuit (!11.7... Magnetic circuit (1) 8
...Tracking coil◎! 5 7. Figure 1 Kazuki Z diagram
Claims (1)
摺動可能に構成された対物レンズ保持筒と、上記対物レ
ンズ保持筒に上記支軸から離間して設けられた対物レン
ズと、上記対物レンズ保持筒の周部に設けられたフォー
カス駆動用の第１のコイルと、上記対物レンズ保持筒の
上記支軸を中心として、上記対物レンズに対向する位置
にトラッキング駆動用の第１の磁気回路を設けた被駆動
部と、上記支軸が固定されている基台にフォーカス駆動
用の第２の磁気回路と、トラッキング駆動用の第２のコ
イルを設けた駆動部から成ることを特徴とする対物レン
ズ駆動装置。an objective lens holding tube configured to be rotatable around a support shaft and slidable in an axial direction of the support shaft; an objective lens provided in the objective lens holding tube at a distance from the support shaft; , a first coil for focus driving provided around the circumference of the objective lens holding cylinder, and a first coil for tracking driving located at a position facing the objective lens around the spindle of the objective lens holding cylinder. A driven part is provided with a magnetic circuit, and a drive part is provided with a second magnetic circuit for focus drive and a second coil for tracking drive on a base to which the spindle is fixed. Characteristic objective lens drive device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17667584A JPS6157046A (en) | 1984-08-27 | 1984-08-27 | Objective lens driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17667584A JPS6157046A (en) | 1984-08-27 | 1984-08-27 | Objective lens driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6157046A true JPS6157046A (en) | 1986-03-22 |
Family
ID=16017754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17667584A Pending JPS6157046A (en) | 1984-08-27 | 1984-08-27 | Objective lens driving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6157046A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0513504U (en) * | 1991-07-31 | 1993-02-23 | 石垣機工株式会社 | Filter press cake peeling equipment |
| JPH0513505U (en) * | 1991-08-02 | 1993-02-23 | 石垣機工株式会社 | Filter press cake peeling equipment |
| JPH0588604U (en) * | 1991-07-31 | 1993-12-03 | 石垣機工株式会社 | Filter press cake peeling equipment |
| JP2007202626A (en) * | 2006-01-31 | 2007-08-16 | Fuji Kiko Co Ltd | Belt-in seat with lifter |
-
1984
- 1984-08-27 JP JP17667584A patent/JPS6157046A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0513504U (en) * | 1991-07-31 | 1993-02-23 | 石垣機工株式会社 | Filter press cake peeling equipment |
| JPH0588604U (en) * | 1991-07-31 | 1993-12-03 | 石垣機工株式会社 | Filter press cake peeling equipment |
| JPH0513505U (en) * | 1991-08-02 | 1993-02-23 | 石垣機工株式会社 | Filter press cake peeling equipment |
| JP2007202626A (en) * | 2006-01-31 | 2007-08-16 | Fuji Kiko Co Ltd | Belt-in seat with lifter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5093595A (en) | Spindle motor having reduced torque ripple | |
| US5050158A (en) | Magnetic clamp for a disk medium | |
| JPH0294126A (en) | Object lens driving device | |
| JPS6157046A (en) | Objective lens driving device | |
| JP2830343B2 (en) | Method of assembling motor for magnetic disk drive | |
| JP2592962Y2 (en) | Actuator | |
| JPS6299966A (en) | Rotary arm apparatus | |
| KR20010091975A (en) | Objective lens drive apparatus | |
| KR930000041B1 (en) | Lenz operating device for optical recording | |
| JPS6180628A (en) | Objective lens driver | |
| JP2700005B2 (en) | Objective lens drive | |
| JPH03864Y2 (en) | ||
| JP2541875Y2 (en) | Drive | |
| JPS647406B2 (en) | ||
| JP2000352656A (en) | Camera apparatus incorporating motor | |
| KR930004022Y1 (en) | Lenz operating device | |
| JPH0352130A (en) | Objective lens driver | |
| JPS58137140A (en) | Optical system driving device of optical information recording and reproducing device | |
| JPH0388136A (en) | Lens focusing actuator | |
| KR20010036854A (en) | An actuator of optical pick-up device | |
| JPS6337830A (en) | Movable magnet type two-dimensional actuator | |
| JPH0192707A (en) | Lens driving device for camera | |
| JPH0877586A (en) | Objective lens driving device | |
| JPH0210502A (en) | Rotary magnetic head device | |
| JP2000285490A (en) | Objective lens driving device |