JPS6233655B2 - - Google Patents
Info
- Publication number
- JPS6233655B2 JPS6233655B2 JP20699181A JP20699181A JPS6233655B2 JP S6233655 B2 JPS6233655 B2 JP S6233655B2 JP 20699181 A JP20699181 A JP 20699181A JP 20699181 A JP20699181 A JP 20699181A JP S6233655 B2 JPS6233655 B2 JP S6233655B2
- Authority
- JP
- Japan
- Prior art keywords
- tracking
- focus
- coil
- permanent magnet
- plate spring
- 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
Links
- 230000003287 optical effect Effects 0.000 claims description 13
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000926 separation method 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
- G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
-
- 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】
この発明は、光ピツクアツプ装置の対物レンズ
上下左右移動装置に係り、特に、トラツキング駆
動部とフオーカス駆動部をデイスクに対して平行
でかつ同一線上に配置するとともに対物レンズを
フオーカス駆動部の中心位置よりデイスク半径内
周方向にずらして配置した光ピツクアツプ装置の
対物レンズ上下左右移動装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for moving an objective lens vertically and horizontally in an optical pickup device, and in particular, a tracking drive unit and a focus drive unit are disposed parallel to and on the same line with respect to a disk, and the objective lens is moved vertically and horizontally. The present invention relates to a device for vertically and horizontally moving an objective lens of an optical pickup device, which is arranged to be shifted from the center position of a focus drive unit in the inner peripheral direction of a disk radius.
従来の光ピツクアツプ装置におけるフオーカス
およびトラツキング制御の一例を第１図および第
２図に示すが、これによるとフオーカス（Ｚ軸方
向）制御はボイスコイル電磁駆動、またトラツキ
ング（Ｘ軸方向）制御はリニアモータ電磁駆動に
より行つており、その駆動対象はいずれも対物レ
ンズ１である。つまりレンズ筒２内に取り付けら
れたトラツキング用平行板バネ３上に対物レンズ
１が固定された円筒状永久磁石４を装着するとと
もにレンズ筒２中間部からボイスコイル５を突設
周設し、かつ円筒状永久磁石４、ボイスコイル５
をそれぞれ収納筒６の上部に内設されたリニアモ
ータ電磁駆動部７内、収納筒６の中間部に内設さ
れたボイスコイル電磁駆動部８内に配置して、中
央部に円孔を有するフオーカス用平行板バネ９を
用いて収納筒６内部にレンズ筒２を保持し、ボイ
スコイル５またリニアモータ電磁駆動部８内のコ
イル１０に流れる電流の方向および大きさにより
対物レンズ１をＺ軸方向またはＸ軸方向に移動さ
せるものである。このようにデイスクに対してト
ラツキング駆動部とフオーカス駆動部が垂直２段
に配置されている。 An example of focus and tracking control in a conventional optical pickup device is shown in Figures 1 and 2. According to these, focus (Z-axis direction) control is performed by voice coil electromagnetic drive, and tracking (X-axis direction) control is performed by linear drive. This is done by electromagnetic driving of a motor, and the object to be driven is the objective lens 1 in both cases. That is, a cylindrical permanent magnet 4 to which the objective lens 1 is fixed is mounted on a tracking parallel plate spring 3 mounted inside the lens barrel 2, and a voice coil 5 is provided around the lens barrel 2 so as to protrude from the middle part of the lens barrel 2. Cylindrical permanent magnet 4, voice coil 5
are arranged in a linear motor electromagnetic drive section 7 installed inside the upper part of the storage tube 6 and a voice coil electromagnetic drive section 8 installed inside the middle part of the storage tube 6, respectively, and have a circular hole in the center. The lens barrel 2 is held inside the housing barrel 6 using the parallel plate spring 9 for focusing, and the objective lens 1 is moved along the Z axis by the direction and magnitude of the current flowing in the voice coil 5 and the coil 10 in the linear motor electromagnetic drive unit 8. direction or the X-axis direction. In this way, the tracking drive section and the focus drive section are arranged in two stages perpendicular to the disk.
この従来技術において、トラツキング用平行板
バネ３は、トラツキング動作範囲を大きくとるた
めにはバネ定数の小さいものが望ましく、また自
立するためにはある程度バネ定数の大きいものが
必要となる。更に温度変化の影響を受けないもの
となると、金属製のものが好ましい。以上を総合
に勘案して概して金属製の長い板バネを用いてい
る。したがつて光ピツクアツプ装置のＺ軸方向の
大きさH1は大となり、そのため光ピツクアツプ
装置が大型となり重量も重いという問題点があつ
た。 In this prior art, it is desirable that the tracking parallel plate spring 3 has a small spring constant in order to widen the tracking operation range, and it is also necessary to have a somewhat large spring constant in order to be self-supporting. Furthermore, metal is preferable because it is not affected by temperature changes. Taking all of the above into consideration, long metal leaf springs are generally used. Accordingly, the size H1 of the optical pickup device in the Z-axis direction becomes large, which poses a problem in that the optical pickup device becomes large and heavy.
またデイスク回転駆動用モータのハウジングと
ピツクアツプ本体が同一側にある場合、デイスク
内周をピツクアツプするとなるとデイスク半径方
向について光軸とピツクアツプ本体の外面との離
隔距離R1は、できるだけ小さいことが好ましい
が、ボイスコイル５とボイスコイル電磁駆動部８
とから構成されるフオーカス駆動部と対物レンズ
１が同心円状に配置されているため、ある程度以
上小さくすることができないという問題点があつ
た。 In addition, when the housing of the disk rotation drive motor and the pickup body are on the same side, when picking up the inner circumference of the disk, it is preferable that the separation distance R 1 between the optical axis and the outer surface of the pickup body in the disk radial direction be as small as possible. , voice coil 5 and voice coil electromagnetic drive section 8
Since the focus drive section and the objective lens 1 are arranged concentrically, there is a problem in that the size cannot be reduced beyond a certain level.
この発明は、このような従来技術の問題点に着
目してなされたもので、トラツキング駆動部とフ
オーカス駆動部をデイスクに対して平行かつ同一
線上に配置するとともに対物レンズをフオーカス
駆動部の中心位置よりデイスク半径内周方向にず
らして配置することによつて上記問題点を解決す
ることを目的としている。 The present invention has been made by focusing on the problems of the prior art, and is made by arranging the tracking drive section and the focus drive section parallel to and on the same line with respect to the disk, and placing the objective lens at the center position of the focus drive section. It is an object of the present invention to solve the above-mentioned problem by arranging the discs so as to be shifted further in the radial direction of the inner circumference of the disk.
以下、この発明を図面に基づいて説明する。 The present invention will be explained below based on the drawings.
第３図は、この発明の一実施例を示す分解斜視
図である。 FIG. 3 is an exploded perspective view showing an embodiment of the present invention.
まず構成を説明すると、１１はフオーカス駆動
用永久磁石で、１対の角棒形状である。フオーカ
ス駆動用永久磁石１１は、断面長方形の永久磁石
片１１Ａと、永久磁石片１１Ａの上面に固定され
る永久磁石片１１Ａより大きい断面長方形の磁性
片１１Ｂと、永久磁石片１１Ａの下面に固定され
る断面Ｌ字状の磁性片１１Ｃとから構成され、磁
性片１１Ｂ，１１Ｃ間には空隙部１１Ｄが形成さ
れている。フオーカス駆動用永久磁石１１は外枠
１２に固定され、その長手方向がトラツキング移
動方向（Ｘ軸方向）と平行である。１３は上下左
右移動部で、立方体である。上下左右移動部１３
の左端部分には対物レンズ１が装着され、４側壁
面にはフオーカス駆動用永久磁石１１の空隙部１
１Ｄに配置されるフオーカス制御用角形コイル１
４が突設周設され、中央部には下向に下部支持片
１３Ａが突設されている。１５はトラツキング用
平行板バネで、フオーカス制御用角形コイル１４
の短辺方向の寸法より大きく、フオーカス制御用
角形コイル１４の左端外側面および上下左右移動
部１３の右端内側上面に２条取り付けられてい
る。１６は上下移動部で、トラツキング用平行板
バネ取付部１６Ａ、フオーカス制御用角形コイル
案内部１６Ｂおよびフオーカス用平行板バネ接触
部１６Ｃから構成されている。トラツキング用平
行板バネ１５を上下移動部１６のトラツキング用
平行板バネ取付部１６Ａに取り付けることによ
り、上下左右移動部１３と上下移動部１６とは一
体になる。このように対物レンズ１は、第４図に
示す如くフオーカス駆動用永久磁石１１とフオー
カス制御用角形コイル１４とからなるフオーカス
駆動同一線上に配置される。したがつて光ピツク
アツプ装置のＺ軸方向の大きさH2は小さくな
り、光ピツクアツプ装置の薄形化が図れる。１９
はフオーカス用平行板バネで、外枠１２と上下移
動部１６のフオーカス用平行板バネ接触部１６Ｃ
との間および外枠１２と上下左右移動部１３の下
部支持片１３Ａとの間に挿入されて上下左右移動
部１３を弾性支持する。なおフオーカス制御用角
形コイル１４の長手方向の大きさは、トラツキン
グ移動（Ｘ軸方向）の際フオーカス制御用角形コ
イル１４がフオーカス駆動用永久磁石１１に接触
しないように定める。またトラツキング制御用角
形コイル１７の高さはフオーカス移動（Ｚ軸方
向）の際、トラツキング制御用角形コイル１７が
トラツキング駆動用永久磁石１８の磁性片１８Ｃ
に接触しないように定める。 First, the structure will be explained. Reference numeral 11 denotes a focus drive permanent magnet, which has the shape of a pair of square rods. The focus drive permanent magnet 11 includes a permanent magnet piece 11A having a rectangular cross section, a magnetic piece 11B having a rectangular cross section larger than the permanent magnet piece 11A fixed to the upper surface of the permanent magnet piece 11A, and a magnetic piece 11B fixed to the lower surface of the permanent magnet piece 11A. A gap 11D is formed between the magnetic pieces 11B and 11C. The focus drive permanent magnet 11 is fixed to the outer frame 12, and its longitudinal direction is parallel to the tracking movement direction (X-axis direction). 13 is a vertically and horizontally moving section, which is a cube. Up/down/left/right moving unit 13
An objective lens 1 is attached to the left end portion of the lens, and a gap 1 of a focus drive permanent magnet 11 is attached to the 4 side wall surface.
Square coil 1 for focus control placed in 1D
4 are protrudingly provided around the periphery, and a lower support piece 13A is provided protruding downward from the center portion. 15 is a parallel plate spring for tracking, and square coil 14 for focus control.
Two strips are attached to the outer surface of the left end of the square focus control coil 14 and the inner upper surface of the right end of the vertically and horizontally moving section 13 . Reference numeral 16 denotes a vertically moving section, which is composed of a tracking parallel plate spring attachment section 16A, a focus control square coil guide section 16B, and a focus parallel plate spring contact section 16C. By attaching the tracking parallel plate spring 15 to the tracking parallel plate spring attachment part 16A of the vertically moving part 16, the vertically and horizontally moving part 13 and the vertically moving part 16 become integrated. In this way, the objective lens 1 is arranged on the same focus drive line consisting of the focus drive permanent magnet 11 and the focus control rectangular coil 14, as shown in FIG. Therefore, the size H2 of the optical pickup device in the Z-axis direction is reduced, and the optical pickup device can be made thinner. 19
is a parallel plate spring for focus, and the parallel plate spring contact portion 16C for focus between the outer frame 12 and the vertical moving part 16
and between the outer frame 12 and the lower support piece 13A of the vertically and horizontally moving section 13 to elastically support the vertically and horizontally moving section 13. The size of the focus control rectangular coil 14 in the longitudinal direction is determined so that the focus control rectangular coil 14 does not come into contact with the focus drive permanent magnet 11 during tracking movement (X-axis direction). Further, the height of the square coil 17 for tracking control is such that when the focus moves (in the Z-axis direction), the square coil 17 for tracking control has a height that is higher than the magnetic piece 18C of the permanent magnet 18 for tracking drive.
Specify not to come into contact with.
次に作用を説明する。フオーカス誤差信号また
はトラツキング誤差信号がゼロであるときは、フ
オーカス制御用角形コイル１４またはトラツキン
グ制御用角形コイル１７には電流が流れず対物レ
ンズ１は所定の位置に静止している。いまフオー
カス誤差信号があるとフオーカス制御用角形コイ
ル１４に電流が流れる。 Next, the action will be explained. When the focus error signal or the tracking error signal is zero, no current flows through the focus control rectangular coil 14 or the tracking control rectangular coil 17, and the objective lens 1 remains stationary at a predetermined position. If there is a focus error signal now, a current flows through the focus control rectangular coil 14.
この電流の方向とフオーカス駆動用永久磁石１
１による磁束の方向は直交しているから、フレミ
ングの左手の法則に基づいてフオーカス制御用角
形コイル１４は上下方向（Ｚ軸方向）に力を受け
る。そしてフオーカス制御用角形コイル１４は上
下左右移動部１３、トラツキング用平行板バネ１
５、上下移動部１６、下部支持片１３Ａと一体と
なり、フオーカス用平行板バネ１９によつて弾性
支持されているから、上下方向（Ｚ軸方向）に移
動する。したがつてフオーカス制御用角形コイル
１４と上下左右移動部１６を介して一体となつて
いる対物レンズ１も上下方向（Ｚ軸方向）に移動
する。なお移動方向および移動量はフオーカス制
御用角形コイル１４に流れる電流の方向および大
きさによつて定まる。次にトラツキング誤差信号
があるとトラツキング制御用角形コイル１７に電
流が流れる。 Direction of this current and focus drive permanent magnet 1
1 are orthogonal to each other, the focus control rectangular coil 14 receives a force in the vertical direction (Z-axis direction) based on Fleming's left-hand rule. The square coil 14 for focus control includes a vertical and horizontal moving section 13, and a parallel plate spring 1 for tracking.
5. Since it is integrated with the vertical moving part 16 and the lower support piece 13A and is elastically supported by the focus parallel plate spring 19, it moves in the vertical direction (Z-axis direction). Accordingly, the objective lens 1, which is integrated with the focus control rectangular coil 14 and the vertical and horizontal moving section 16, also moves in the vertical direction (Z-axis direction). Note that the direction and amount of movement are determined by the direction and magnitude of the current flowing through the focus control rectangular coil 14. Next, when there is a tracking error signal, a current flows through the tracking control rectangular coil 17.
この電流の方向とトラツキング駆動用永久磁石
１８による磁束の方向は直交しているから、フレ
ミングの左手の法則に基づいてトラツキング制御
用角形コイル１７は左右方向（Ｘ軸方向）に力を
受ける。そしてトラツキング制御用角形コイル１
７はフオーカス制御用角形コイル１４、上下左右
移動部１３、トラツキング用平行板バネ１５と一
体となり、上下移動部１６に取り付けられている
トラツキング用平行板バネ１５によつて左右方向
（Ｘ軸方向）に関し弾性支持されているから、左
右方向（Ｘ軸方向）に移動する。したがつてトラ
ツキング制御用角形コイル１７とトラツキング用
平行板バネ１５および上下左右移動部１３を介し
て一体となつてなる対物レンズ１も左右方向（Ｘ
軸方向）に移動する。移動方向および移動量はト
ラツキング制御用角形コイル１７に流れる電流の
方向および大きさによつて定まる。なお、フオー
カス誤差信号およびトラツキング誤差信号は、第
４図に示すように半導体レーザ２０のレーザ光を
コリメータレンズ２１、偏光ビームスプリツタ２
２、1/4波長板２３、90゜偏向ミラー２４、対物
レンズ１に導き、デイスクＤからの反射光を逆の
順序で偏光ビームスプリツタ２２まで戻し、90゜
偏向させ、図示しない遮光板、収束レンズを経て
４分割センサに導いて得ている。 Since the direction of this current and the direction of the magnetic flux from the tracking drive permanent magnet 18 are perpendicular to each other, the tracking control rectangular coil 17 receives a force in the left-right direction (X-axis direction) based on Fleming's left-hand rule. And square coil 1 for tracking control
7 is integrated with a rectangular coil 14 for focus control, an up/down/left/right moving part 13, and a parallel plate spring 15 for tracking, and is moved in the left/right direction (X-axis direction) by the parallel plate spring 15 for tracking attached to the up/down moving part 16. Since it is elastically supported, it moves in the left-right direction (X-axis direction). Therefore, the objective lens 1, which is integrated through the tracking control rectangular coil 17, the tracking parallel plate spring 15, and the up/down/left/right moving part 13, also moves in the left/right direction (X
axial direction). The direction and amount of movement are determined by the direction and magnitude of the current flowing through the tracking control rectangular coil 17. Note that the focus error signal and the tracking error signal are generated by converting the laser beam of the semiconductor laser 20 into the collimator lens 21 and the polarizing beam splitter 2 as shown in FIG.
2. Guide the light reflected from the disk D to the 1/4 wavelength plate 23, the 90° deflection mirror 24, and the objective lens 1, and return the reflected light from the disk D in the reverse order to the polarizing beam splitter 22, deflect it by 90°, and a light shielding plate (not shown); It is obtained by guiding the light through a converging lens to a 4-split sensor.
以上説明してきたように、この発明は、トラツ
キング駆動部とフオーカス駆動部をデイスクに対
して平行でかつ同一線上に配置するとともに対物
レンズをフオーカス駆動部の中心位置よりデイス
ク半径内周方向にずらして配置することによつて
光ピツクアツプ装置の薄形化を図ることができ、
光軸と光ピツクアツプ装置の外面との離隔距離を
小さくすることができるという効果が得られる。 As explained above, the present invention arranges the tracking drive section and the focus drive section parallel to the disk and on the same line, and also shifts the objective lens from the center position of the focus drive section in the direction of the inner radius of the disk. By arranging the optical pickup device, it is possible to make the optical pickup device thinner.
This provides the effect that the distance between the optical axis and the outer surface of the optical pickup device can be reduced.
第１図は従来技術の断面図、第２図は従来技術
のトラツキング駆動部の分解斜視図、第３図はこ
の発明の一実施例を示す分解斜視図、第４図は光
学系を含めた第３図のA′―Ａ略断面図である。
１……対物レンズ、２……レンズ筒、３……ト
ラツキング用平行板バネ、４……円筒状永久磁
石、５……ボイスコイル、６……収納筒、７……
リニアモータ電磁駆動部、８……ボイスコイル電
磁駆動部、９……フオーカス用平行板バネ、１０
……コイル、１１……フオーカス駆動用永久磁
石、１２……外枠、１３……上下左右移動部、１
４……フオーカス制御用角形コイル、１５……ト
ラツキング用平行板バネ、１６……上下移動部、
１７……トラツキング制御用角形コイル、１８…
…トラツキング駆動用永久磁石、１９……フオー
カス用平行板バネ、２０……半導体レーザ、２１
……コリメータレンズ、２２……偏光ビームスプ
リツタ、２３……1/4波長板、２４……90゜偏向
ミラー。
Fig. 1 is a sectional view of the prior art, Fig. 2 is an exploded perspective view of a tracking drive unit of the prior art, Fig. 3 is an exploded perspective view showing an embodiment of the present invention, and Fig. 4 is an exploded perspective view of a tracking drive unit of the prior art. It is a schematic sectional view taken along line A'-A in FIG. 3. 1... Objective lens, 2... Lens barrel, 3... Parallel leaf spring for tracking, 4... Cylindrical permanent magnet, 5... Voice coil, 6... Storage tube, 7...
Linear motor electromagnetic drive section, 8...Voice coil electromagnetic drive section, 9...Parallel plate spring for focus, 10
... Coil, 11 ... Permanent magnet for focus drive, 12 ... Outer frame, 13 ... Up/down/left/right moving part, 1
4... Square coil for focus control, 15... Parallel plate spring for tracking, 16... Vertical moving part,
17...Square coil for tracking control, 18...
... Permanent magnet for tracking drive, 19 ... Parallel plate spring for focusing, 20 ... Semiconductor laser, 21
... Collimator lens, 22 ... Polarizing beam splitter, 23 ... 1/4 wavelength plate, 24 ... 90° deflection mirror.
Claims (1)
れた永久磁石片と磁性片とからなる１対の角棒状
のフオーカス駆動用永久磁石と、該フオーカス駆
動用永久磁石の空隙部に配置されるフオーカス制
御用角形コイルが突設周設され左端部分に対物レ
ンズが装着されるとともに中央部から下向に下部
支持片が突設されている上下左右移動部と、該フ
オーカス制御用角形コイルの左端外側面および該
上下左右移動部の右端内側上面に取り付けられか
つ該フオーカス制御用角形コイルの短辺方向の寸
法より大きいトラツキング用平行板バネと、該ト
ラツキング用平行板バネの両端が固定される上下
移動部と、該フオーカス制御用角形コイルの右端
外側面に取り付けられたトラツキング制御用角形
コイルと、該トラツキング制御用角形コイルの中
空部に一部が挿入されかつ外枠に固定された永久
磁石片と磁性片とからなるトラツキング駆動用永
久磁石と、外枠と該上下移動部の上面の間および
外枠と該上下左右移動部の下部支持片の下面の間
に挿入されて該上下左右移動部を弾性支持するフ
オーカス用平行板バネとからなる光ピツクアツプ
装置の対物レンズ上下左右移動装置。1. A pair of rectangular rod-shaped focus drive permanent magnets made up of a permanent magnet piece and a magnetic piece fixed to an outer frame parallel to the tracking movement direction, and a focus control device arranged in the gap between the focus drive permanent magnets. a vertical and horizontal moving section in which a rectangular coil for focus control is protruded around the periphery, an objective lens is attached to the left end portion, and a lower support piece is protruded downward from the center portion; and an outer surface of the left end of the rectangular coil for focus control. and a tracking parallel plate spring attached to the upper surface inside the right end of the vertically and horizontally moving unit and larger in dimension in the short side direction of the focus control rectangular coil, and a vertically moving unit to which both ends of the tracking parallel plate spring are fixed. , a square coil for tracking control attached to the right outer surface of the square coil for focus control, a permanent magnet piece whose part is inserted into the hollow part of the square coil for tracking control and fixed to the outer frame, and a magnetic A permanent magnet for tracking drive, which is inserted between the outer frame and the upper surface of the vertically moving part and between the outer frame and the lower surface of the lower support piece of the vertically and horizontally moving part, elastically moves the vertically and horizontally moving part. A device for vertically and horizontally moving an objective lens of an optical pickup device, consisting of a supporting parallel plate spring for focus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20699181A JPS58111134A (en) | 1981-12-23 | 1981-12-23 | Vertical and horizontal moving device for objective lens of light pick-up device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20699181A JPS58111134A (en) | 1981-12-23 | 1981-12-23 | Vertical and horizontal moving device for objective lens of light pick-up device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58111134A JPS58111134A (en) | 1983-07-02 |
| JPS6233655B2 true JPS6233655B2 (en) | 1987-07-22 |
Family
ID=16532368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20699181A Granted JPS58111134A (en) | 1981-12-23 | 1981-12-23 | Vertical and horizontal moving device for objective lens of light pick-up device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58111134A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6050731A (en) * | 1983-08-31 | 1985-03-20 | Nec Home Electronics Ltd | Actuator of optical pickup |
| US4818066A (en) * | 1984-01-30 | 1989-04-04 | Canon Kabushiki Kaisha | Objective lens driving device |
| US4696566A (en) * | 1984-02-08 | 1987-09-29 | Sharp Kabushiki Kaisha | Three-dimensional driving arrangement |
| JP2749614B2 (en) * | 1989-02-28 | 1998-05-13 | オリンパス光学工業株式会社 | Objective lens drive |
-
1981
- 1981-12-23 JP JP20699181A patent/JPS58111134A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58111134A (en) | 1983-07-02 |
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