JPS5898850A - Object lens driving device - Google Patents
Object lens driving deviceInfo
- Publication number
- JPS5898850A JPS5898850A JP19796581A JP19796581A JPS5898850A JP S5898850 A JPS5898850 A JP S5898850A JP 19796581 A JP19796581 A JP 19796581A JP 19796581 A JP19796581 A JP 19796581A JP S5898850 A JPS5898850 A JP S5898850A
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- objective lens
- electromagnetic means
- magnetic frame
- coil
- 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
Abstract
Description
【発明の詳細な説明】
本発明は、光学的に情報が記録されたディスクの再生装
置に利用して好適な対物レンズ駆動装置に関するもので
あり、トラッキング制量の為の電磁手段と焦点制卸の為
の電磁手段の一部を共用することに工り、装置の小型化
を図ったものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an objective lens drive device suitable for use in a reproducing device for a disc on which information is optically recorded, and includes an electromagnetic means for tracking control and a focus control device. A part of the electromagnetic means for this purpose is shared, thereby reducing the size of the device.
光学的に情報が記録されたディスクに対して、レーザー
ビーム會照射することにＬす、情報？再生する装置は既
に公知である。この場合、ディスクに記録された情報ト
ラックに対して正しくレーサーヒームを照射する為に、
焦点制ｆｕｌｌとトラッキング割面が為される。即ち、
レーザービームｋｍ報トラックに照射する為の対物レン
ズを、その元軸方向に移動させることにエリ焦点制量ｔ
１また、元軸方向に対して直交方間に移動させることに
工りトラッキング制自ｊ盆行なっている。対物レンズを
斯様に移動させるのに、磁石とコイルエリなる電磁手段
を利用することが行わｎているが、従来に於いては、焦
点制御用の電磁手段とトラッキング割肌用の電磁手段に
別個に構成されており、それだけ装置が大型となってい
た。本発明は、電磁手段？共用することに工り、装置の
小型化４図ったものである。Is it possible to obtain information by irradiating a disk with optical information with a laser beam? Devices for reproducing are already known. In this case, in order to correctly illuminate the information track recorded on the disc with the racer beam,
Focusing full and tracking sections are performed. That is,
The elifocus control t is used to move the objective lens for irradiating the laser beam onto the km signal track in the direction of its original axis.
1. Also, a tracking control system is used to move the shaft in a direction perpendicular to the original axis direction. To move the objective lens in this manner, electromagnetic means such as a magnet and a coil area are used, but in the past, electromagnetic means for focus control and electromagnetic means for tracking splitting were separated. , and the device was correspondingly larger. Is the present invention an electromagnetic means? The device was designed to be shared, and the device was made smaller.
以下、図面に示す実施側１乞参照して詳述する。Hereinafter, a detailed explanation will be given with reference to the implementation side shown in the drawings.
図に於いて、光学系ぽｚ１物レンズのみ倉図不しており
、その他の元二Ｖ系は要旨夕１であるので図示していな
い。In the figure, only the single-object lens of the optical system is not shown, and the other two-V systems are not shown because they are for the sake of summary.
対物レンズ１１）灯、支持機構＋２１ Ｋて支持されて
おり、Ａ：軸方（［］２ ｆＸｌ ＆ ’ＪこｎＹ−Ｕ
ａ９すル方向（ＹＶＣｆｇＪＪ）自在となっている。ｆ
、ｉｌ］ち、支持“アーム（３）は、軸（４）にエリ支
持台（５）に討して元軸方間［Ｘ）に回動自在に支持さ
ｊている。支持台＋５）ｒｉ、適当な硬度？有する伸性
材（６）にて基台（７＋ｙｃ対して支持さｎている。Objective lens 11) Light, support mechanism +21K
It is freely movable in the a9 direction (YVCfgJJ). f
, il] The support arm (3) is supported on the shaft (4) by the support base (5) so as to be rotatable in the direction of the original axis [X].Support base +5) It is supported on a base (7+yc) by an extensible material (6) having an appropriate hardness.
弾性材（６１にて叉持さｎた基台（７）は水平方向即ち
元軸と直ダフる力量（Ｙ）に回動可能である。The base (7) held by the elastic member (61) is rotatable in the horizontal direction, that is, in the amount of force (Y) that is perpendicular to the original axis.
支持機構（２１にて支持さ庇た対物レンズ＋１１［、電
磁手段（８）にて相互に直交する二号同（Ｘ、Ｙ）に移
動ぜしめらｎる。電磁手段（句に、支持アーム（３）に
嘔付けらｎ、た磁石（９）、基台（７）に取付けられた
磁性枠体（ｊＯ）、及びこの磁性枠体１１０１に対して
そのｓ勝方間が直交するり［１〈巻装さｆ′Ｌｆ′ｃ、
独立した二個のコイル（１１，１２）より構成されてい
る。磁石（９１は磁性枠体（１０１内に配備さｎ、てお
り、この磁石（９）と磁性枠体＋ｌＯ！に工り形成され
る磁路は第４図に示す通りとなる。尚、第４図げ電磁手
段（８）？−ヒ刀）ら見た図であり、八−にの右側は断
面となっている。この場合、磁束密Ｖは、磁気ギャップ
（ｇ＋、ｇ２）に集中することになる。従って、コイル
（１１，１２）に′電流を流した場合、コイルＩＩＹＪ
に関しては、第４図ＩｆＣ於いて右ｆｌｌｌｌの長辺部
分〔磁石１９）に対峙した測〕が力を受け、コイル［１
２１に関しては第４図に於いて左側〔磁石（９）に対峙
した側）が力？受けることになる◎従って、コイル旧ｊ
に対して電流？流せば、相対的に磁石＋９１が第４図の
紙面と垂直方向即ち元軸方向（ＸｉＫ移動し、コイル１
１２１に対して電流を流せば、相対的に磁石（９）が第
４図図示Ｙ方向＜ｙｔ、軸と＠交する方向）Ｋ移動する
ことになる。即ち、コイルｌ ＩＩ ｉ焦点制餌１用コ
イルであり、このコイル圓に対して焦点制卸信号？流せ
ば、焦点制御１１４１？為すことができ、丑た、。コイ
ル口２）は（ラッキングｉ＋１１砥用コイルであり、こ
のコイル（１２１に対してトラッキング割肌信号金離せ
ば、トラッキング制御！ｌｌｌを為すことができる。The objective lens +11 is supported by the support mechanism (21) and moved in two directions (X, Y) that are perpendicular to each other by the electromagnetic means (8). 3), the magnetic frame (jO) attached to the magnet (9), the base (7), and the magnetic frame 1101 are orthogonal to each other. <wrapped f'Lf'c,
It is composed of two independent coils (11, 12). A magnet (91) is disposed within a magnetic frame (101), and the magnetic path formed between this magnet (9) and the magnetic frame +lO! is as shown in Fig. 4. 4. This is a diagram seen from the electromagnetic means (8)? Therefore, when a current is passed through the coils (11, 12), the coil IIYJ
In Fig. 4 IfC, the long side part of the right fllll [the magnet 19] receives a force, and the coil [1
Regarding 21, in Figure 4, is the left side [the side facing the magnet (9)] the force? ◎Therefore, the coil old j
vs current? When the current flows, the magnet +91 moves in a direction perpendicular to the page of FIG.
When a current is applied to 121, the magnet (9) moves relatively in the Y direction shown in FIG. That is, coil I II is a focus control 1 coil, and a focus control signal is sent to this coil circle. If it flows, focus control 1141? I was able to do it. Coil port 2) is a (racking i+11) grinding coil, and if the tracking split signal is separated from this coil (121), tracking control can be performed.
尚、第５図に於いて、（Ｄ）はディスクである。焦点側
副信号及びトラッキング側副信号を得る方法は、例えば
、特公昭５１−２３９００号にて公知であり、−ｔた本
発明の要旨外であるので、説明は省略する。史に支持機
構に実施例に限定されるものでにｌく、１ｍの構成でも
艮い。In addition, in FIG. 5, (D) is a disk. The method for obtaining the focal side secondary signal and the tracking side signal is known, for example, in Japanese Patent Publication No. 51-23900, and is outside the scope of the present invention, so a description thereof will be omitted. Historically, the support mechanism is not limited to the embodiments, and a 1 m configuration is also applicable.
舅、上述べた本発明に依れば、焦点割肌用電磁手段とト
ラッキング制（財）用電磁手段の一部全共用Ｉ。According to the present invention described above, part of the focusing skin electromagnetic means and the tracking system electromagnetic means can be shared.
たので装置ケ小型化でき、且つ焦点制卸用コイルとトラ
ッキング側副用コイルに相互に直交しているので、相互
干渉が生じることもなく、艮好な焦点割符及びトラッキ
ング制卸？期待できるものである。As a result, the device can be made smaller, and since the focus control coil and the tracking side coil are orthogonal to each other, there is no mutual interference, resulting in excellent focusing and tracking control. This is something to look forward to.
図面に何れも本発明に係る対物レンズ駆動装置を示すも
のであり、第１図は分解斜視図、第２図に平面図、第３
図に一部側断面図、第４図汀磁路？示す図である◇
（１１は対物１／ンズ、帝は支持機構、（５）は電磁手
段、１９１ ｒｉ磁石、（１０１げ磁性枠体、旧）、Ｉ
ＩＺはコイル。
第１図The drawings all show an objective lens driving device according to the present invention, and FIG. 1 is an exploded perspective view, FIG. 2 is a plan view, and FIG. 3 is an exploded perspective view.
Partial side sectional view in figure, Fig. 4 straddling magnetic path? This is a diagram showing ◇ (11 is the objective 1 / lens, the main is the support mechanism, (5) is the electromagnetic means, 191 ri magnet, (101 magnetic frame, old), I
IZ is a coil. Figure 1
Claims (1)
ンズと、この対物レンズをその元軸方向及びこｊ、とＩ
Ｍりする方向に移動自在に支持する支持機構と、−個の
磁性枠体に対してその巻線方間が直交する如く巻装され
た独立した二個のコイル及びこの磁性枠体内に配備され
た一個の磁石工Ｖなる電磁手段と？有し、前記磁性枠体
と磁石にて構成される磁路に対して配備された前記二つ
のコイルに対して焦点制（財）信号及びトラッキング制
副信号金印加することにニジ、前記電磁手段ケ駆動し、
以って前記支持機構を介して前記対物レンズを元軸方向
及びこれと直交する１回に移動させることを特徴とする
対物レンズ駆動装置。(1) An objective lens arranged in the same manner with respect to the information recording medium, and this objective lens in its original axis direction, and
a support mechanism movably supported in the direction of M, two independent coils wound around the magnetic frame so that the winding directions thereof are perpendicular, and a support mechanism disposed within the magnetic frame. What about an electromagnetic means called magnet work V? and applying a focusing signal and a tracking sub-signal to the two coils arranged in a magnetic path constituted by the magnetic frame and the magnet, and the electromagnetic means ke drive,
Therefore, the objective lens driving device is characterized in that the objective lens is moved in the original axis direction and once perpendicular thereto via the support mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19796581A JPS5898850A (en) | 1981-12-08 | 1981-12-08 | Object lens driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19796581A JPS5898850A (en) | 1981-12-08 | 1981-12-08 | Object lens driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5898850A true JPS5898850A (en) | 1983-06-11 |
Family
ID=16383261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19796581A Pending JPS5898850A (en) | 1981-12-08 | 1981-12-08 | Object lens driving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5898850A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2556121A1 (en) * | 1983-12-01 | 1985-06-07 | Philips Nv | ELECTRO-OPTICAL DEVICE FOR ELECTRODYNAMICALLY ADJUSTING THE POSITION OF A RADIATION SPOT |
| JPS627622U (en) * | 1985-06-28 | 1987-01-17 | ||
| US5694273A (en) * | 1994-11-16 | 1997-12-02 | Sharp Kabushiki Kaisha | Rotary head type magnetic recording reproducing apparatus |
| EP1426935A2 (en) * | 2002-11-26 | 2004-06-09 | Samsung Electronics Co., Ltd. | Optical pickup actuator and optical recording and/or reproducing apparatus and method for using the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5494007A (en) * | 1978-01-05 | 1979-07-25 | Olympus Optical Co Ltd | Pickup for disc recorder recorded optically with information |
| JPS56117337A (en) * | 1980-02-16 | 1981-09-14 | Olympus Optical Co Ltd | Driving device for objective lens |
-
1981
- 1981-12-08 JP JP19796581A patent/JPS5898850A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5494007A (en) * | 1978-01-05 | 1979-07-25 | Olympus Optical Co Ltd | Pickup for disc recorder recorded optically with information |
| JPS56117337A (en) * | 1980-02-16 | 1981-09-14 | Olympus Optical Co Ltd | Driving device for objective lens |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2556121A1 (en) * | 1983-12-01 | 1985-06-07 | Philips Nv | ELECTRO-OPTICAL DEVICE FOR ELECTRODYNAMICALLY ADJUSTING THE POSITION OF A RADIATION SPOT |
| JPS627622U (en) * | 1985-06-28 | 1987-01-17 | ||
| US5694273A (en) * | 1994-11-16 | 1997-12-02 | Sharp Kabushiki Kaisha | Rotary head type magnetic recording reproducing apparatus |
| US5798894A (en) * | 1994-11-16 | 1998-08-25 | Sharp Kabushiki Kaisha | Rotary head type magnetic recording reproducing apparatus |
| EP1426935A2 (en) * | 2002-11-26 | 2004-06-09 | Samsung Electronics Co., Ltd. | Optical pickup actuator and optical recording and/or reproducing apparatus and method for using the same |
| EP1426935A3 (en) * | 2002-11-26 | 2007-03-07 | Samsung Electronics Co., Ltd. | Optical pickup actuator and optical recording and/or reproducing apparatus and method for using the same |
| US7817505B2 (en) | 2002-11-26 | 2010-10-19 | Samsung Electronics Co., Ltd. | Optical pickup actuator and optical recording and/or reproducing apparatus and method for the same |
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