JPS63184967A - Optical head driving device - Google Patents
Optical head driving deviceInfo
- Publication number
- JPS63184967A JPS63184967A JP1513787A JP1513787A JPS63184967A JP S63184967 A JPS63184967 A JP S63184967A JP 1513787 A JP1513787 A JP 1513787A JP 1513787 A JP1513787 A JP 1513787A JP S63184967 A JPS63184967 A JP S63184967A
- Authority
- JP
- Japan
- Prior art keywords
- optical head
- slider
- bearing
- bearings
- round
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 49
- 230000005484 gravity Effects 0.000 claims abstract description 12
- 230000009471 action Effects 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000010365 information processing Effects 0.000 description 10
- 230000007246 mechanism Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 206010067482 No adverse event Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Moving Of Heads (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、たとえば光ディスク等の情報記憶媒体の所定
位置に対向するように光学ヘッドを移動させる光学ヘッ
ド駆動装置の改良に関する。Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to an improvement in an optical head drive device that moves an optical head so as to face a predetermined position on an information storage medium such as an optical disk. .
（従来の技術）′
近年、光ディスクを情報記憶媒体とする情報処理装置は
、従来多用されている磁気的な情報処理装置等に比べ、
情報収容量を大幅に増大することができ、また、ノイズ
が少なく極めて良好かつ安定した情報の再生状態が得ら
れるとともに、外部の影響を受は難く記憶状態が極めて
安定しており、しかも、非接触状態での情報処理が行え
て情報記憶媒体および光学ヘッドの損傷等の悪影響が無
い等の特長を有するところから多用されつつある。(Prior Art) In recent years, information processing devices using optical disks as information storage media have
It is possible to greatly increase the information storage capacity, to obtain extremely good and stable information playback conditions with little noise, and to have an extremely stable storage condition that is not easily affected by external influences. It is becoming widely used because it has features such as being able to perform information processing in a contact state and having no adverse effects such as damage to the information storage medium and optical head.
従来、この種情報処理装置にあっては、光ディスクの半
径方向に光学ヘッドを移動させる１ａ構として、光学ヘ
ッドを搭載したスライダとベースとの間にクロスローラ
設け、スライダの横に置いたりニアモータによりスライ
ダを移動させるような構成となっている。Conventionally, in this type of information processing device, a cross roller is provided between a slider on which the optical head is mounted and a base, and a cross roller is placed next to the slider or a near motor is used to move the optical head in the radial direction of the optical disk. It is configured to move a slider.
（発明が解決しようとする問題点）
しかしながら、従来は、クロスローラを用いるためにク
ロスローラを取付ける部分は高精度が要求されるため加
工費が高くつくとともにクロスローラ自体も高くつき装
置の低コスト化の障害となっていた。また、クロスロー
ラの組立、調整が難しく、機器によってはこじれが生じ
て余分な力を必要としたり軸受の寿命が短く長期に亙っ
での良好な作動状態が維持できないといった問題がある
。(Problem to be solved by the invention) However, in the past, in order to use cross rollers, the part where the cross rollers are attached required high precision, which resulted in high processing costs and the cross rollers themselves were expensive, reducing the cost of the device. This was a hindrance to development. Further, there are problems in that it is difficult to assemble and adjust the cross rollers, and that some equipment may become distorted, requiring extra force, and that bearings have short lifespans, making it impossible to maintain good operating conditions over a long period of time.
本発明は上記事情に基づいてなされたもので、その目的
とするところは、コストが安く、しかも、組立、調整が
容易であるとともに、軸受とガイドシャフトの間のこじ
れが無く長期に屋って良好な作動状態が得られる光学ヘ
ッド駆動装置を提供しようとするものである。The present invention has been made based on the above circumstances, and its objectives are to provide low cost, easy assembly and adjustment, and to avoid twisting between the bearing and the guide shaft, ensuring long-term stability. It is an object of the present invention to provide an optical head drive device that can obtain good operating conditions.
［発明の構成］
（問題点を解決するための手段）
本発明は、上記問題点を解決するために、光学ヘッドを
情報記憶媒体の所定位置に対向するように移動させる光
学ヘッド駆動装置であって、光学ヘッドを搭載するとと
もに重心を挟んで一方の側に内径が真円の真円軸受およ
び他方の側に内径が長孔の長孔軸受を有するスライダと
、このスライダの上記軸受部を貫通しスライダを移動自
在に支承する少なくとも２本のガイドシャフトと、上記
光学ヘッドを含むスライダの重心と真円軸受を中心軸と
して対称の側にコイルを配置し、情報記憶媒体の所定位
置に対向するように上記スライダを移動させるリニアモ
ータとを具備してなる構成としたものである。[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the present invention provides an optical head drive device that moves an optical head to face a predetermined position on an information storage medium. The slider is equipped with an optical head and has a perfect circular bearing with a perfect circular inner diameter on one side across the center of gravity and a long hole bearing with a long inner diameter on the other side, and a slider that passes through the bearing part of this slider. At least two guide shafts that movably support the slider, and a coil is arranged on a side symmetrical with respect to the center of gravity of the slider including the optical head and a perfect circular bearing, and facing a predetermined position of the information storage medium. The slider is configured to include a linear motor for moving the slider.
（作用）
すなわち、本発明は光学ヘッドを搭載するスライダを２
本のガイドシャフトで保持し、第１のガイドシャフトに
対しては２つの内径が真円の真円軸受で保持し、第２の
ガイドシャフトに対しては内径が長孔の長孔軸受で保持
し、上記スライダを駆動するりニアモータの作用点を真
円軸受を中心軸として光学ヘッドを含むスライダの重心
と対称の側に配置したから、従来のクロスローラを用い
るものに比べ安価で、しかも、組立、￥Ｊ４整が容易と
なる。また、リニアモー、夕の重量は許容荷重の大きな
真円軸受にかかり、逆に許容荷重の小さな長孔軸受にか
かつていた荷重が軽減することができるとともに、リニ
アモータの駆動力の作用中心点が真円軸受側にあるので
真円軸受とガイドシャフトの間でこじれが生じることな
く長期に屋っで良好な作動状態を得ることが可能となる
。(Function) That is, the present invention has two sliders on which an optical head is mounted.
The first guide shaft is held by two perfect circular bearings with an inner diameter of a perfect circle, and the second guide shaft is held by a long hole bearing with an elongated inner diameter. However, since the point of action of the near motor that drives the slider is placed on the side that is symmetrical to the center of gravity of the slider containing the optical head, with the perfect circular bearing as the center axis, it is cheaper than the conventional cross roller system. Easy to assemble and arrange. In addition, the weight of the linear motor is placed on the perfect circular bearing with a large allowable load, and conversely, the load placed on the long hole bearing with a small allowable load is reduced, and the center of action of the linear motor's driving force is Since it is located on the true circular bearing side, it is possible to maintain a good operating condition for a long period of time without causing any twisting between the true circular bearing and the guide shaft.
（実施例） 以下、本発明の一実施例を図面を参照して説明する。(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第５図は情報処理装＠１およびこれにより取扱われる情
報記憶媒体用カートリッジ（以後、単にカートリッジと
いう）２の外観を示す。FIG. 5 shows the external appearance of an information processing device @1 and an information storage medium cartridge (hereinafter simply referred to as a cartridge) 2 handled by the information processing device @1.
上記情報処理装Ｈ１は、前面上部にカートリッジ挿脱口
３が形成されているとともに、内部に情報処理機構（ド
ライブベース機構）４．媒体取込／装着機構（ローディ
ング１ｊｌｌｌ）５．およびこれらを駆動するための制
ｍ装＠（図示しない）が収容された構成となっている。The information processing device H1 has a cartridge insertion/ejection port 3 formed in the upper front surface, and an information processing mechanism (drive base mechanism) 4 inside. Media intake/loading mechanism (loading 1jlll)5. and a control device (not shown) for driving these.
また、上記カートリッジ２内には情報記憶媒体としての
光ディスク６が収容されており、この光ディスク６は情
報処理装置１に形成されたカートリッジ挿脱口３にカー
トリッジ２ごと挿入されるようになっている。Further, an optical disk 6 as an information storage medium is accommodated in the cartridge 2, and the optical disk 6 is inserted together with the cartridge 2 into a cartridge insertion/ejection opening 3 formed in the information processing apparatus 1.
カートリッジ２ごと挿入された光ディスク６は、ローデ
ィング機構５により自動的に所定位置かつ水平状態に取
込まれ、このとき上記カートリッジ２を構成するケース
２ａ、２ｂが光ディスク６の回転中心部を露出するよう
に開いた状態となる。The optical disc 6 inserted together with the cartridge 2 is automatically loaded into a predetermined position and in a horizontal state by the loading mechanism 5, and at this time, the cases 2a and 2b forming the cartridge 2 are arranged so that the center of rotation of the optical disc 6 is exposed. It will be in an open state.
そして、この後、カートリッジ２が面方向に変位して光
ディスク６がドライブベース機構４のターンテーブル（
図示しない）に自動的に装着されるようになっている。After that, the cartridge 2 is displaced in the surface direction, and the optical disc 6 is transferred to the turntable of the drive base mechanism 4 (
(not shown).
また、上記ドライブベース機構４には、上記ターンテー
ブルを備えた媒体駆動手段の他に第２図に示すように光
学ヘッド７を光ディスク６の半径方向に移動させて記録
面の所定位置すなわち所定のトラックに対向させ、記録
面に対する情報処理を行ない得るようにした光学ヘッド
駆動装置８が設けられている。In addition to the medium driving means equipped with the turntable, the drive base mechanism 4 also includes an optical head 7 that moves in the radial direction of the optical disk 6 to a predetermined position on the recording surface, as shown in FIG. An optical head driving device 8 is provided facing the track and capable of processing information on the recording surface.
この光学ヘッド駆動装置８は、第１図および第２図に示
すような構成となっている。This optical head drive device 8 has a configuration as shown in FIGS. 1 and 2.
すなわち、光学ヘッド駆動装置８は、後述するガイド手
段１０により往復移動自在に案内されたスライダ１１と
、このスライダ１１に対して取外し自在に搭載された光
学ヘッド７と、この光学ヘッド７が光ディスク６の記録
面の所定位置に対向するように上記スライダ１１を移動
させるスライダ移動手段としてのりニアモータ１２と、
このリニアモータ１２により移動されるスライダ１１の
位置、換言すればスライダ１１上に搭載された光学ヘッ
ド７の位置を検出する位置検出手段１３を有した構成と
なっている。That is, the optical head driving device 8 includes a slider 11 that is guided so as to be reciprocally movable by a guide means 10 that will be described later, an optical head 7 that is removably mounted on the slider 11, and an optical head 7 that is attached to an optical disk 6. a near motor 12 as a slider moving means for moving the slider 11 so as to face a predetermined position on the recording surface;
The configuration includes a position detection means 13 for detecting the position of the slider 11 moved by the linear motor 12, in other words, the position of the optical head 7 mounted on the slider 11.
上記ガイド手段１０は、第３図および第４図に示すよう
に光学ヘッド７を搭載したスライダ１１の重心Ｇを挟ん
で一方の側に埋込まれた内径が真円の含油軸受（以後、
単に真円軸受という）１５゜１５と、上記重心Ｇを挟ん
で他方の側に埋込まれた内径が長孔の含油軸受（以後、
単に長孔軸受という）１６と、ベース１７上に保持手段
１８゜１８を介して両端部を保持され上記真円軸受１５
゜１５および長孔軸受１６・・・を貫通する第１．第２
のガイドシャフト１９ａ、１９ｂで構成される。The guide means 10 includes an oil-impregnated bearing (hereinafter referred to as
15°15 (simply referred to as a perfect circular bearing), and an oil-impregnated bearing with a long inner diameter hole embedded on the other side across the center of gravity G (hereinafter referred to as
(simply referred to as an elongated hole bearing) 16; and the true circular bearing 15, which is held at both ends on a base 17 via holding means 18.
15 and the first hole passing through the long hole bearing 16... Second
It is composed of guide shafts 19a and 19b.
上記保持手段’１８．１８は、それぞれベース１７上に
取付けられガイドシャフト１９ａ、１９ｂの両端部が嵌
合する角溝２０．２０を有するブロック２１と、このブ
ロック２１上にねじ止めされガイドシャフト１９．１９
を角溝２０・・・に押付ける板はね２２．２２により構
成されている。The holding means '18.18 includes a block 21 which is mounted on the base 17 and has square grooves 20.20 into which both ends of the guide shafts 19a and 19b fit, and a guide shaft 19 which is screwed onto this block 21. .19
It is constituted by plate springs 22, 22 that press the square grooves 20... into the square grooves 20.
また、上記リニアモータ１２のコイル２５を巻いたボビ
ン２６にはスライダ１１に突設された腕２７が連結され
ており、上記コイル２５に電流を流すことによりスライ
ダ１１が矢印Ｘ方向、すなわち、光ディスク６の半径方
向に往復移動するようになっている。An arm 27 protruding from the slider 11 is connected to a bobbin 26 around which a coil 25 of the linear motor 12 is wound, and by passing a current through the coil 25, the slider 11 moves in the direction of the arrow It is designed to reciprocate in the radial direction of 6.
なお、位置検出手段１３は、スライダ１１に取付けられ
た多数のスリットを有するスケール３０と、このスケー
ル３ｏの移動路に配置された複数のフォトインタラプタ
３１・・・とで構成されている。Note that the position detection means 13 is composed of a scale 30 having a large number of slits attached to the slider 11, and a plurality of photointerrupters 31 arranged on the movement path of the scale 3o.
また、光学ヘッド７は、光ディスク６に対してレーザビ
ームにより記録／再生を行なうが、スライダ１１上に突
設された位置決めビン３５．３５およびヘッド取付ねじ
３６．３６によりスライダ１１上に取外し自在に固定さ
れている。Further, the optical head 7 performs recording/reproduction on the optical disc 6 using a laser beam, and can be freely removed from the slider 11 using a positioning pin 35.35 protruding from the slider 11 and a head mounting screw 36.36. Fixed.
また、光学ヘッド７を搭載したスライダ１１のリニアモ
ータ１２のボビン２６を除いた重心Ｇは、略ガイドシャ
フト１９ａ、１９ｂの中間にあり、３つの軸受１５．１
５．１６で略１／３ずつの重量を受けることになる。し
かし、スライダ１１にリニアモータ１２の凝る２５が巻
回されたボビン２６が付けた状態とするとボビン２６は
真円軸受１５．１５を保持する第１のガイドシャフト１
９ａの外側にあるので可動部の重心は第１のガイドシャ
フト１９ａ側に移動した状態となっている。Furthermore, the center of gravity G of the linear motor 12 of the slider 11 on which the optical head 7 is mounted, excluding the bobbin 26, is located approximately in the middle of the guide shafts 19a and 19b, and
5.16, it will receive approximately 1/3 of the weight. However, if the slider 11 is attached to the bobbin 26 on which the shaft 25 of the linear motor 12 is wound, the bobbin 26 is attached to the first guide shaft 1 that holds the perfect circular bearing 15.15.
9a, the center of gravity of the movable part is moved toward the first guide shaft 19a.
これによって、軸受にかかる荷重は、真円軸受１５．１
．５側で多く、長孔軸受１６側で小さくなる。真円軸受
１５はガイドシャフト１９ａに対して面接触状態である
ため許容荷重が大きいが長孔軸受１６は内径がガイドシ
ャフト１９ｂに対して線接触状態となり許容荷重が小さ
い。したがって、許容荷重が大きい真円軸受１５．１５
で受ける本願の構成では軸受の寿命が長くすることがで
きる。As a result, the load on the bearing is reduced to 15.1
．． It is larger on the 5 side and smaller on the elongated hole bearing 16 side. The perfect circular bearing 15 has a large allowable load because it is in surface contact with the guide shaft 19a, but the long hole bearing 16 has an inner diameter in line contact with the guide shaft 19b and has a small allowable load. Therefore, a true circular bearing with a large allowable load 15.15
With the configuration of the present application, the life of the bearing can be extended.
また、リニアモータ１２の駆動力の作用中心点が真円軸
受１５．１５側にあるので真円軸受１５゜１５とガイド
シャフト１９ａの間でこじれが生じて余分な力が加わる
ようなことがなく長期に亙って良好な作動状態を得るこ
とが可能となる。In addition, since the center of action of the driving force of the linear motor 12 is on the circular bearing 15.15 side, there is no possibility of twisting between the circular bearing 15.15 and the guide shaft 19a and the application of extra force. It becomes possible to obtain good operating conditions over a long period of time.
なお、本発明は上述の一実施例に限らず本発明の要旨を
変えない範囲で種々変形実施可能なことは勿論である。It goes without saying that the present invention is not limited to the above-mentioned embodiment, and that various modifications can be made without departing from the gist of the present invention.
［発明の効果］
以上説明したように本発明によれば、光学ヘッドを搭載
するスライダを少なくとも２本のガイドシャフトで保持
し、第１のガイドシャフトに対しては２つの内径が真円
の真円軸受で保持し、第２のガイドシャフトに対しては
内径が長孔の長孔軸受で保持し、上記スライダを駆動す
るりニアモータの作用点を真円軸受を中心軸として光学
ヘッドを含むスライダの重心と対称の側に配置したから
、従来のクロスローラを用いるものに比ベコストが安く
、しかも、組立、調整が容易であるとともに、軸受とガ
イドシャフトの間のこじれが無く長期に亙って良好な作
動状態が得られる光学ヘッド駆動装置を提供できるとい
った効果を奏する。 。[Effects of the Invention] As explained above, according to the present invention, the slider on which the optical head is mounted is held by at least two guide shafts, and the two inner diameters are perfectly circular with respect to the first guide shaft. The second guide shaft is held by a circular bearing, and the second guide shaft is held by a long hole bearing with an elongated inner diameter. Because it is placed on the side symmetrical to the center of gravity of the bearing, it is cheaper than conventional cross rollers, and it is easy to assemble and adjust, and there is no twisting between the bearing and the guide shaft, so it can be used for a long time. This has the advantage of being able to provide an optical head drive device that provides good operating conditions. .
図面は本発明の一実施例を示すもので、第１図は概略的
斜視図、第２図は同じく側面図、第３図はスライダ部の
側面図、第４図は第３図ＩＶ−ｒＶ綜に沿う断面図、第
５図は本発明を組込んだ情報処理装置と情報記憶媒体用
カートリッジの外観斜視図である。
１・・・情報処理装置、６・・・情報記憶媒体（光ディ
スク）、７・・・光学ヘッド、８・・・光学ヘッド駆！
Ｉ］装置、１０・・・ガイド手段、１１・・・スライダ
、１２・・・リニアモータ、１９ａ、１９ｂ・・・ガイ
ドシャフト、１５・・・真円軸受、１６・・・長孔軸受
、２５・・・コイル、Ｇ・・・重心。
出願人代理人 弁理士 鈴江武彦
第１図
第２図
第３図
第４図The drawings show one embodiment of the present invention; FIG. 1 is a schematic perspective view, FIG. 2 is a side view, FIG. 3 is a side view of the slider section, and FIG. 4 is a diagram of FIG. 3 IV-rV. FIG. 5 is a cross-sectional view taken along the heel, and is a perspective view of an information processing apparatus incorporating the present invention and an information storage medium cartridge. 1... Information processing device, 6... Information storage medium (optical disk), 7... Optical head, 8... Optical head drive!
I] Device, 10...Guide means, 11...Slider, 12...Linear motor, 19a, 19b...Guide shaft, 15...Perfect circular bearing, 16...Elongated hole bearing, 25 ... Coil, G... Center of gravity. Applicant's representative Patent attorney Takehiko Suzue Figure 1 Figure 2 Figure 3 Figure 4
Claims (3)
ように移動させる光学ヘッド駆動装置であつて、光学ヘ
ッドを搭載するとともに重心を挟んで一方の側に内径が
真円の真円軸受および他方の側に内径が長孔の長孔軸受
を有するスライダと、このスライダの上記軸受部を貫通
しスライダを移動自在に支承する少なくとも２本のガイ
ドシャフトと、上記光学ヘッドを含むスライダの重心と
真円軸受を中心軸として対称の側にコイルを配置し、情
報記憶媒体の所定位置に対向するように上記スライダを
移動させるリニアモータとを具備してなることを特徴と
する光学ヘッド駆動装置。(1) An optical head drive device that moves an optical head to face a predetermined position on an information storage medium, which is equipped with a perfect circular bearing with an inner diameter of a perfect circle on one side across the center of gravity, and a slider having a long-hole bearing with a long inner diameter on the other side; at least two guide shafts that pass through the bearing portion of the slider and movably support the slider; and a center of gravity of the slider including the optical head. An optical head driving device comprising: a linear motor that moves the slider so as to oppose a predetermined position of an information storage medium, with coils arranged on symmetrical sides with a perfect circular bearing as the central axis.
徴とする特許請求の範囲第１項記載の光学ヘッド駆動装
置。(2) The optical head drive device according to claim 1, characterized in that two perfect circular bearings and one slotted bearing are provided.
特徴とする特許請求の範囲第１項記載の光学ヘッド駆動
装置。(3) The optical head drive device according to claim 1, wherein the perfect circular bearing and the long hole bearing are oil-impregnated bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1513787A JPS63184967A (en) | 1987-01-27 | 1987-01-27 | Optical head driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1513787A JPS63184967A (en) | 1987-01-27 | 1987-01-27 | Optical head driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63184967A true JPS63184967A (en) | 1988-07-30 |
Family
ID=11880431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1513787A Pending JPS63184967A (en) | 1987-01-27 | 1987-01-27 | Optical head driving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63184967A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5111088A (en) * | 1988-10-28 | 1992-05-05 | Canon Kabushiki Kaisha | Guide rail mounting structure |
| JPH04344329A (en) * | 1991-05-22 | 1992-11-30 | Teac Corp | Inclination correcting device for optical head |
| JPH0574068A (en) * | 1991-09-11 | 1993-03-26 | Nec Corp | Optical disk device |
| JPH10154383A (en) * | 1996-11-21 | 1998-06-09 | Olympus Optical Co Ltd | Optical system driving device |
| JPH11144401A (en) * | 1997-11-13 | 1999-05-28 | Teac Corp | Recording and reproduction apparatus for storage medium |
| JP2017221905A (en) * | 2016-06-15 | 2017-12-21 | 日本電産コパル株式会社 | Linear vibration motor |
-
1987
- 1987-01-27 JP JP1513787A patent/JPS63184967A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5111088A (en) * | 1988-10-28 | 1992-05-05 | Canon Kabushiki Kaisha | Guide rail mounting structure |
| JPH04344329A (en) * | 1991-05-22 | 1992-11-30 | Teac Corp | Inclination correcting device for optical head |
| JPH0574068A (en) * | 1991-09-11 | 1993-03-26 | Nec Corp | Optical disk device |
| JPH10154383A (en) * | 1996-11-21 | 1998-06-09 | Olympus Optical Co Ltd | Optical system driving device |
| JPH11144401A (en) * | 1997-11-13 | 1999-05-28 | Teac Corp | Recording and reproduction apparatus for storage medium |
| JP2017221905A (en) * | 2016-06-15 | 2017-12-21 | 日本電産コパル株式会社 | Linear vibration motor |
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