JP2716749B2 - Optical system support device - Google Patents
Optical system support deviceInfo
- Publication number
- JP2716749B2 JP2716749B2 JP27096088A JP27096088A JP2716749B2 JP 2716749 B2 JP2716749 B2 JP 2716749B2 JP 27096088 A JP27096088 A JP 27096088A JP 27096088 A JP27096088 A JP 27096088A JP 2716749 B2 JP2716749 B2 JP 2716749B2
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- movable member
- coil
- axis
- supporting device
- 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 - Fee Related
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- 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、光学系を保持する可動部材を、複数本の弾
性支持部材を介して固定部材に連結し、駆動部材によっ
て可動部材即ち光学系を、少なくとも第１の方向に駆動
するようにした光学系支持装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a movable member for holding an optical system, which is connected to a fixed member via a plurality of elastic support members, and a movable member, that is, an optical system, by a driving member. Are driven at least in a first direction.
一般に、この種の光学系支持装置において、正確に情
報を読み取るためには、光学情報媒体のゆがみや揺動に
対して、光学系と光学情報媒体の情報トラックの位置と
の距離を制御するフォーカシング制御と、情報トラック
の偏心に対して光学系を追従制御するトラッキング制御
とを行なう必要があり、そのためにフォーカシング方
向、トラッキング方向へ光学系を駆動し得る光学系支持
装置が提案されてきた。Generally, in this type of optical system supporting device, in order to read information accurately, focusing which controls the distance between the optical system and the position of the information track of the optical information medium with respect to the distortion or swinging of the optical information medium. It is necessary to perform control and tracking control for controlling the optical system to follow the eccentricity of the information track. For this purpose, an optical system supporting device capable of driving the optical system in the focusing direction and the tracking direction has been proposed.
また従来の光ディスクプレーヤは、例えば第６図
（Ａ）に示すように、光学系の光軸方向と重力方向とが
一致する、いわゆる「横置き型」の装置53が主流であ
り、上記の情報読み取りのための駆動制御はこの「横置
き型」の装置において主に開発されてきた。Also, as shown in FIG. 6A, for example, a conventional optical disc player is mainly a so-called “horizontal type” device 53 in which the optical axis direction of the optical system coincides with the direction of gravity. Drive control for reading has been mainly developed in this "horizontal type" device.
しかしながら、最近では、スペースの有効利用の観点
から、第６図（Ｂ）に示すように、光学系の光軸方向と
直交する方向に重力方向がくる、いわゆる「縦置き型」
の装置54も多く生産されるようになってきたために、従
来の光学系支持装置に以下のような問題点が生じてき
た。However, recently, from the viewpoint of effective use of space, as shown in FIG. 6 (B), the direction of gravity comes in a direction orthogonal to the optical axis direction of the optical system, that is, a so-called “vertical type”.
Since many devices 54 have also been produced, the following problems have arisen in the conventional optical system supporting device.
例えば、「横置き型」の光学系支持装置では、第５図
（Ａ）に示すように、光学レンズ41を保持する可動部材
42と固定部材44との取付関係は、弾性支持部材46の撓み
を考慮して、可動部材42のコイル43の軸線Ｐが固定部材
44の永久磁石45の軸線Ｑよりも上方に位置するようにし
ている。For example, in a “horizontal type” optical system supporting device, as shown in FIG.
The mounting relationship between the fixed member 44 and the fixed member 44 is such that the axis P of the coil 43 of the movable member 42 is
The permanent magnet 45 is located above the axis Q of the permanent magnet 45.
このため組付後において、第５図（Ｂ）に示すよう
に、光軸方向に重力が作用するため、弾性支持部材46が
撓み、可動部材42はコイル43の軸線Ｐと永久磁石45の軸
線Ｑとが合致する位置まで下がり、この位置が動作中心
となる。しかし、従えば第６図（Ｂ）のような「縦置き
型」の装置では、重力作用による弾性支持部材42の撓み
を考慮する必要がなく、最初から可動部材42のコイル43
の軸線Ｐが固定部材44の永久磁石45の軸線Ｑに一致する
ように取付ければよい。このため、２通りの取付方式を
型式により選択しなければならないが、これでは生産コ
ストがかさむため、望ましくない。For this reason, after assembly, as shown in FIG. 5 (B), gravity acts in the optical axis direction, so that the elastic support member 46 is bent, and the movable member 42 is moved along the axis P of the coil 43 and the axis of the permanent magnet 45. It moves down to the position where Q matches, and this position becomes the operation center. However, according to the "vertical type" apparatus as shown in FIG. 6B, it is not necessary to consider the bending of the elastic support member 42 due to the action of gravity, and the coil 43 of the movable member 42 is not required from the beginning.
The axis P of the fixed member 44 may be aligned with the axis Q of the permanent magnet 45 of the fixing member 44. For this reason, two types of mounting methods must be selected depending on the type, but this is not desirable because the production cost increases.
また、特開昭59-221838号公報に提案されているよう
に、可動部材と固定部材とを弾性支持部材を介して連結
するとき、可動部材の駆動コイルの中心軸線と固定部材
の永久磁石の中心軸線が合致するように位置決めしてお
き、例えば「横置き型」のように可動部材が重力方向に
下がる場合には、可動部材の自重分だけバイアスを加え
て両方の中心軸線が合致するようにする解決策もある。
この従来例では、「縦置き型」の装置に適用する場合に
は、バイアスを加える必要はなくなる利点もあるが、
「横置き型」の装置への適用時の可動部材の自重による
移動量を補正するために、駆動コイルに印加するバイア
ス電流による消費電力が大きくなり、これに伴って駆動
コイルの発熱量も大きくなるという欠点がある。Further, as proposed in JP-A-59-221838, when the movable member and the fixed member are connected via the elastic support member, the center axis of the drive coil of the movable member and the permanent magnet of the fixed member are connected. If the movable member is lowered in the direction of gravity, for example, as in the case of a "horizontal type", a bias is applied by the weight of the movable member so that both central axes match. There is also a solution to
In this conventional example, when applied to a “vertical type” device, there is an advantage that there is no need to apply a bias,
In order to correct the amount of movement of the movable member due to its own weight when applied to a "horizontal type" device, the power consumption due to the bias current applied to the drive coil increases, and accordingly the amount of heat generated by the drive coil also increases. Disadvantage.
また駆動コイルにバイアス電流を流さずに、光学系支
持装置と光学情報媒体との距離を変えて調整することも
考えられるが、この場合には、駆動コイルの中心軸線と
永久磁石の中心軸線とにずれが生じているため、動作時
に共振が発生し易く、可動部材の移動範囲が不安定にな
り易い等の欠点があった。It is also conceivable to adjust the distance between the optical system support device and the optical information medium by changing the distance between the optical system support device and the optical information medium without passing a bias current through the drive coil. Therefore, there is a drawback that resonance occurs easily during operation, and the moving range of the movable member tends to be unstable.
本発明の目的は上述した欠点を除去し、光学系支持装
置の使用時の姿勢が異なっても、性能が劣化せず、消費
電力が小さい光学系支持装置を提供するにある。An object of the present invention is to eliminate the above-mentioned disadvantages and to provide an optical system supporting device that does not deteriorate in performance and consumes less power even if the posture of the optical system supporting device during use is different.
〔課題を解決するための手段〕 本発明は、第１図（Ａ）〜（Ｂ）に例示するように、
光学系（21）を保持する可動部材（22）を、複数本の弾
性支持部材（23）を介して固定部材（36）に連結し、可
動部材（25,32）によって可動部材（22）即ち光学系（2
1）を、少なくともその光軸方向（Ｌ）およびそれと直
交する方向に駆動するようにした光学系支持装置におい
て、 前記光軸方向（Ｌ）と重力方向（Ｇ）とが一致する光
学系支持装置の第１の姿勢では、可動部材（22）が第１
の位置（Q3）を占有し、光軸方向（Ｌ）と直交する方向
と重力方向（Ｇ′）とが一致する光学系支持装置の第２
の姿勢では、可動部材（22）が第２の位置（Q1）を占有
する場合に、前記第１の位置（Q3）と前記第２の位置
（Q1）との間に可動部材（22）の動作中心が位置するよ
うにしたことを特徴とする。[Means for Solving the Problems] The present invention, as exemplified in FIGS. 1 (A) and 1 (B),
A movable member (22) holding the optical system (21) is connected to a fixed member (36) through a plurality of elastic support members (23), and the movable member (22), Optical system (2
An optical system supporting device that drives at least the optical axis direction (L) and a direction orthogonal to the optical axis direction, wherein the optical axis direction (L) and the gravity direction (G) coincide with each other. In the first position, the movable member (22) is in the first position.
Of the optical system supporting device occupying the position (Q3) of the optical system, and the direction orthogonal to the optical axis direction (L) and the direction of gravity (G ') coincide with each other.
When the movable member (22) occupies the second position (Q1), the movable member (22) moves between the first position (Q3) and the second position (Q1). It is characterized in that the operation center is located.
本発明によれば、例えば第１図（Ａ）に示すように、
光学系21を保持する可動部材22と固定部材36とを、可動
部材22の駆動部材（例えば駆動コイル）25の軸線Ｐが固
定部材36の駆動部材（例えば永久磁石）32の軸線Q2より
も上方に位置するように配置した後、複数の弾性支持部
材23を、フリーな状態で可動部材22と固定部材36とに結
合する。このとき駆動コイル25の軸線はQ1の位置を占め
る。このようにして可動部材22と固定部材36とを弾性支
持部材23を介して連結する。According to the present invention, for example, as shown in FIG.
The movable member 22 holding the optical system 21 and the fixed member 36 are positioned such that the axis P of the drive member (eg, drive coil) 25 of the movable member 22 is higher than the axis Q2 of the drive member (eg, permanent magnet) 32 of the fixed member 36. Then, the plurality of elastic support members 23 are connected to the movable member 22 and the fixed member 36 in a free state. At this time, the axis of the drive coil 25 occupies the position of Q1. Thus, the movable member 22 and the fixed member 36 are connected via the elastic support member 23.
取付後において、例えば「横置き型」の場合には第１
図（Ｂ）に示すように、可動部材22をフリーにした状態
で可動部材22は駆動コイル25の軸線Ｐと永久磁石32の軸
線Q3とが合致する位置まで下がり、弾性支持部材23は撓
んだ状態となる。次いで、第１図（Ｃ）に示すように、
可動部材22の重量や弾性支持部材23の弾性力などを考慮
し、駆動部材（コイル）25にバイアス電流を流し、可動
部材22を位置Q3からQ2まで持ち上げる。この時、弾性支
持部材23は少し撓んだ状態となり、可動部材22はその軸
線Ｐが固定部材36の位置Q2と合致する位置を中心とし
て、動作する。すなわち位置Q2は動作中心位置となる。After installation, for example, in the case of "horizontal type", the first
As shown in FIG. 7B, in a state where the movable member 22 is free, the movable member 22 is lowered to a position where the axis P of the drive coil 25 and the axis Q3 of the permanent magnet 32 coincide, and the elastic support member 23 is bent. State. Next, as shown in FIG. 1 (C),
Considering the weight of the movable member 22 and the elastic force of the elastic support member 23, a bias current is applied to the drive member (coil) 25 to lift the movable member 22 from the position Q3 to the position Q2. At this time, the elastic support member 23 is slightly bent, and the movable member 22 operates around a position where its axis P coincides with the position Q2 of the fixed member 36. That is, the position Q2 is the operation center position.
また「縦置き型」の場合には、フリーの状態で可動部
材22は第１図（Ａ）に示す姿勢であり、これに弾性支持
部材23の弾性力などを考慮し、駆動部材25に前述の「横
置き型」とは逆のバイアス電流を流し、軸線Ｐを軸線Q2
に合わせる。In the case of the "vertical mounting type", the movable member 22 is in the posture shown in FIG. 1 (A) in a free state. In consideration of the elastic force of the elastic support member 23 and the like, Flow the reverse bias current to the “horizontal type”, and move the axis P to the axis Q2.
Adjust to
このような配置とすることにより、光学系支持装置の
使用姿勢が変化しても、可動部材の動作中心位置からの
変位を小さくすることができ、したがって、可動部材を
動作中心位置へ補正するための駆動部材へのバイアス電
流の量も少なくすることができ、消費電力が少なく、発
熱を少ないものにする。With such an arrangement, even when the use posture of the optical system support device changes, the displacement of the movable member from the operation center position can be reduced, and therefore, the movable member is corrected to the operation center position. Therefore, the amount of bias current to the driving member can be reduced, so that power consumption is reduced and heat generation is reduced.
第２〜４図は本発明の光学系支持装置の一実施例の構
成を示すそれぞれ斜視図である。対物レンズ21はプラス
チックの一体成形体より成る可動部材22のレンズホルダ
22Aに固定されている。本例では対物レンズ21は平凸の
セルホックレンズから構成する。可動部材22は、レンズ
ホルダ22Aを囲むように横断面形状が矩形のフレーム22B
を有しており、このフレームの底壁22cからレンズホル
ダ22Aは立上っている。フレーム22Bの互いに対向する側
壁には、線状弾性支持部材23A〜23Dを支持するための支
持部22D〜22Gが形成されている。第２〜４図では１つの
支持部22Gは見えていない。第４図に示すように、フレ
ーム22Bの外周面にはプリントコイル24を接着により固
着する。第４図の展開図ではプリントコイル24は可撓性
絶縁シートに４つのトラッキングコイル部24A〜24Dを設
けたものであり、各コイル部にはそれぞれ２層のコイル
が絶縁膜を介して重ねられている。これらのコイルは互
いに電気的に接続され、両端子はランド24Eおよび24Fに
接続されている。プリントコイル24をフレーム22Bの外
周面に取付ける際の位置決めを行うために、フレーム22
Bの一側面の下部に突起22Hを形成し、ここにプリントコ
イル24に形成した凹部24Gを嵌合させている。プリント
コイル24の外側にはさらにフォーカシングコイル25を巻
回する。このフォーカシングコイル25の端子導線はプリ
ントコイル24に設けたランド24Hおよび24Iに接続する。
このようにして可動部材を構成し、弾性支持部材23A〜2
3Dを介して固定部材に連結する。2 to 4 are perspective views each showing the configuration of an embodiment of the optical system support device of the present invention. The objective lens 21 is a lens holder of a movable member 22 made of an integrally molded plastic body.
Fixed to 22A. In the present example, the objective lens 21 is formed of a plano-convex cell hook lens. The movable member 22 includes a rectangular frame 22B having a rectangular cross section so as to surround the lens holder 22A.
The lens holder 22A rises from the bottom wall 22c of the frame. Support portions 22D to 22G for supporting the linear elastic support members 23A to 23D are formed on the mutually facing side walls of the frame 22B. 2 to 4, one support portion 22G is not visible. As shown in FIG. 4, a print coil 24 is fixed to the outer peripheral surface of the frame 22B by bonding. In the developed view of FIG. 4, the printed coil 24 is one in which four tracking coil portions 24A to 24D are provided on a flexible insulating sheet, and two layers of coils are stacked on each coil portion via an insulating film. ing. These coils are electrically connected to each other, and both terminals are connected to lands 24E and 24F. In order to position the print coil 24 when attaching it to the outer peripheral surface of the frame 22B, the frame 22
A protrusion 22H is formed at the lower part of one side surface of B, and a recess 24G formed in the print coil 24 is fitted therein. A focusing coil 25 is further wound around the outside of the print coil 24. The terminal wires of the focusing coil 25 are connected to lands 24H and 24I provided on the print coil 24.
The movable member is configured in this manner, and the elastic support members 23A to 23A
Connect to the fixed member via 3D.
固定部材36は磁性材料の一体成形体より成るベース31
を具えている。ベース31は底部31Aを有し、この底部か
ら垂直上方へ立上っている４枚のヨーク部31B〜31Eを一
体に形成する。ヨーク部31Bおよび31Cの内側面には永久
磁石32Aおよび32Bを固着する。本例ではこれらヨーク部
31Bおよび31Cの内側表面に溝31Fおよび31Gを形成し、永
久磁石32Aおよび32Bを磁力によりヨーク部31Bおよび31C
の所定の位置に吸着させた後、前記の溝31Fおよび31Gに
接着剤を流し込んで永久磁石をヨーク部に固定する。こ
のような構成とすることにより永久磁石をヨーク部に対
して正確に位置決めして固定することができるとともに
組立も容易となり、特に機械による自動組立てに好適で
ある。The fixing member 36 is a base 31 made of an integrally molded magnetic material.
It has. The base 31 has a bottom portion 31A, and integrally forms four yoke portions 31B to 31E rising vertically upward from the bottom portion 31A. Permanent magnets 32A and 32B are fixed to the inner surfaces of the yokes 31B and 31C. In this example, these yoke parts
Grooves 31F and 31G are formed on the inner surfaces of 31B and 31C, and permanent magnets 32A and 32B are yoke portions 31B and 31C by magnetic force.
Then, an adhesive is poured into the grooves 31F and 31G to fix the permanent magnet to the yoke. With such a configuration, the permanent magnet can be accurately positioned and fixed with respect to the yoke portion, and the assembling is facilitated, which is particularly suitable for automatic assembling by a machine.
固定部材26のベース31のヨーク部31Cの外側面には絶
縁プレート33およびプリント基板34をねじ35により固着
する。絶縁プレート33の内側表面には一対の突条33Aお
よび33Bを設け、これらの間にヨーク部31Cを嵌合させて
位置きめする。また、絶縁プレート33の両側面には弾性
支持部材23A〜23Dの端部が嵌入する溝33C〜33Fを形成す
るとともにプリント基板34の側面にも対応する位置に同
一寸法の溝34A〜34Dを形成する。第３図に明瞭に示すよ
うにベース31の底部31Aの下側面にはほぼリング状の突
条31Hを形成し、その先端面を曲面状とし、対物レンズ
駆動装置を支持してディスク状情報媒体の径方向に駆動
するキャリッジに回転自在に装着できるようにする。こ
の突条31Hの一部をベース底部31Aと一緒に切欠いて光路
を構成するようにする。このようにして固定部材36を構
成する。An insulating plate 33 and a printed circuit board 34 are fixed to the outer surface of the yoke portion 31C of the base 31 of the fixing member 26 with screws 35. A pair of protrusions 33A and 33B are provided on the inner surface of the insulating plate 33, and the yoke 31C is fitted between these to determine the position. In addition, grooves 33C to 33F into which the ends of the elastic support members 23A to 23D fit are formed on both side surfaces of the insulating plate 33, and grooves 34A to 34D having the same dimensions are formed at positions corresponding to the side surfaces of the printed circuit board 34. I do. As is clearly shown in FIG. 3, a substantially ring-shaped ridge 31H is formed on the lower surface of the bottom 31A of the base 31, the tip surface thereof is curved, and the disk-shaped information medium is supported by supporting the objective lens driving device. To be rotatably mounted on a carriage driven in the radial direction. A part of the ridge 31H is cut out together with the base bottom 31A to form an optical path. Thus, the fixing member 36 is configured.
このように構成された可動部材22と、固定部材36を弾
性支持部材23を介して連結するにあたり、第１図（Ａ）
に簡略に示したように、駆動コイル25の軸線Ｐが、固定
部材36の永久磁石32の中心軸線Q2より上方の位置Q1に取
り付ける。この場合に、Ｚ軸方向に重力が作用する姿勢
で、駆動（フォーカシング）コイル25にバイアス電流を
流さないと、第１図（Ｂ）に示したように、弾性支持部
材23は、可動部材22の自重により下方に▲▼だ
けたわみ、可動部材22の基準軸線Ｐが固定部材36の永久
磁石32の軸線Q3と合致する。駆動コイル25と永久磁石32
とを正対させるため、駆動コイル25に正または負のバイ
アス電流を流し、▲▼だけ変位させる。このよ
うにして駆動コイル25およびプリントコイル24が永久磁
石32A,32Bと正対し可動部材の共振が最小となる位置に
設定する。また第１図におけるＹ軸方向に重力が作用す
る姿勢で、しかも駆動コイル25にバイアス電流を流さな
い場合には、第１図（Ａ）に示したように、弾性支持部
材23はたわむことなく、真直な状態であり、可動部材22
の基準軸線Ｐが固定部材36の位置Q1と合致する。この場
合にも駆動コイル25と永久磁石32とを正対させるため、
駆動コイル25に負または正のバイアス電流を流し、▲
▼だけ変位させる。したがって、いずれの姿勢の
場合でも供給するバイアス電流の大きさは可動部材22の
自重による最大の移動量▲▼より少ない量だけ
補正すればよいことになる。In connecting the movable member 22 and the fixed member 36 configured as described above via the elastic support member 23, FIG.
As shown in FIG. 2, the axis P of the drive coil 25 is attached to a position Q1 above the center axis Q2 of the permanent magnet 32 of the fixed member. In this case, if a bias current is not supplied to the drive (focusing) coil 25 in a posture in which gravity acts in the Z-axis direction, as shown in FIG. Deflects downward by the weight of the movable member 22 so that the reference axis P of the movable member 22 matches the axis Q3 of the permanent magnet 32 of the fixed member 36. Drive coil 25 and permanent magnet 32
Are positively or negatively applied to the drive coil 25 to displace the drive coil 25 by ▲ and ▼. In this way, the drive coil 25 and the print coil 24 are set to the positions where they face the permanent magnets 32A and 32B and the resonance of the movable member is minimized. In a posture where gravity acts in the Y-axis direction in FIG. 1 and no bias current is supplied to the drive coil 25, the elastic support member 23 does not bend as shown in FIG. , The movable member 22
Is aligned with the position Q1 of the fixing member 36. Also in this case, in order to directly face the drive coil 25 and the permanent magnet 32,
When a negative or positive bias current is applied to the drive coil 25,
Displace only by ▼. Therefore, in any case, the magnitude of the bias current to be supplied only needs to be corrected by an amount smaller than the maximum amount of movement Δ ▼ of the movable member 22 due to its own weight.
なお、可動部材22のＺ軸方向（フォーカス方向）の移
動範囲を規制するストッパは、この場合には、可動部材
22に対するＺ軸方向の正および負側の両方に所望の移動
量（例えば±1mm）を確保できるように設定するのがよ
い。また、光学系支持装置が３方向以上の姿勢で使用さ
れる場合には、その全ての状態とその頻度に応じて各部
品位置を本発明により設定する必要がある。In this case, the stopper that regulates the moving range of the movable member 22 in the Z-axis direction (focus direction) is, in this case, a movable member.
It is preferable to set so that a desired movement amount (for example, ± 1 mm) can be secured on both the positive side and the negative side in the Z-axis direction with respect to 22. When the optical system supporting device is used in postures in three or more directions, it is necessary to set the position of each component according to the present invention in accordance with all the states and the frequencies.
さらに、弾性支持部材として金属線を用いる他に、細
い板状のものであってもよく、または金属線の外周に一
体的にゴム状弾性体を装着したものにすることができ
る。Further, instead of using a metal wire as the elastic support member, a thin plate may be used, or a rubber-like elastic body may be integrally attached to the outer periphery of the metal wire.
本発明においては、第６図に示すように、光学系支持
装置の光ディスク装置等への取付姿勢が異なる場合にお
いても、駆動コイルへのバイアス電流を変化させること
により、光学系支持装置の動作中心位置が一定となるよ
うにでき、すなわち１種類の光学系支持装置で対応でき
るため、設計および製造上の観点から有利となり、しか
も動作中心位置における共振等の発生を最小となるよう
に設定できるので十分な性能を維持することができる。
また、光学系支持装置の取付姿勢が変化する場合の可動
部材の自重による可動部材の変位を補償するための正ま
たは負のバイアス電流も、補正距離が小さいことから、
少なくでき、したがって消費電力が少なく、発熱も少な
い状態で動作させることができる。In the present invention, as shown in FIG. 6, even when the mounting posture of the optical system support device to the optical disk device or the like is different, the operation center of the optical system support device is changed by changing the bias current to the drive coil. Since the position can be made constant, that is, one type of optical system supporting device can be used, it is advantageous from the viewpoint of design and manufacturing, and it can be set to minimize the occurrence of resonance at the operation center position. Sufficient performance can be maintained.
Also, the positive or negative bias current for compensating the displacement of the movable member due to its own weight when the mounting posture of the optical system support device changes, because the correction distance is small,
It can be operated with less power consumption and less heat generation.
第１図Ａ〜Ｃは、本発明の光学系支持装置の基本的構成
を示す概念図、 第２図〜第４図は、本発明の装置の一実施例の構成を示
す斜視図、 第５図ＡおよびＢは、従来の光学系支持装置の構成を示
す線図、 第６図ＡおよびＢは、光学系支持装置を組み込んだ光デ
ィスク装置の型式を示す線図である。 21……光学系、22……可動部材 23……弾性支持部材 25……駆動（フォーカシング）コイル 32……永久磁石、36……固定部材 Ｌ……光学系の光軸方向、G,G′……重力方向1A to 1C are conceptual diagrams showing the basic configuration of an optical system support device according to the present invention. FIGS. 2 to 4 are perspective views showing the configuration of an embodiment of the device according to the present invention. 6A and 6B are diagrams showing the configuration of a conventional optical system supporting device, and FIGS. 6A and 6B are diagrams showing the type of an optical disk device incorporating the optical system supporting device. 21 optical system 22, movable member 23 elastic support member 25 driving (focusing) coil 32 permanent magnet 36 fixed member L optical axis direction of optical system, G, G ' …… gravity direction
Claims (1)
性支持部材を介して固定部材に連結し、駆動部材によっ
て可動部材即ち光学系を、少なくとも第１の方向に駆動
するようにした光学系支持装置において、 前記第１の方向と前記可動部材に働く重力方向とが一致
する光学系支持装置の第１の姿勢では、可動部材が第１
の位置を占有し、前記第１の方向と直交する第２の方向
と重力方向とが一致する光学系支持装置の第２の姿勢で
は、可動部材が第２の位置を占有する場合に、前記第１
の位置と前記第２の位置との間に可動部材の動作中心が
位置するよう構成したことを特徴とする光学系支持装
置。A movable member holding an optical system is connected to a fixed member via a plurality of elastic support members, and the movable member, that is, the optical system is driven at least in a first direction by a driving member. In the optical system supporting device, in the first posture of the optical system supporting device in which the first direction and the direction of gravity acting on the movable member coincide with each other, the movable member is in the first position.
In the second posture of the optical system supporting device, wherein the second direction orthogonal to the first direction and the direction of gravity coincide with each other, when the movable member occupies the second position, First
An optical system supporting device, wherein the operating center of the movable member is located between the position (1) and the second position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27096088A JP2716749B2 (en) | 1988-10-28 | 1988-10-28 | Optical system support device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27096088A JP2716749B2 (en) | 1988-10-28 | 1988-10-28 | Optical system support device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02121125A JPH02121125A (en) | 1990-05-09 |
| JP2716749B2 true JP2716749B2 (en) | 1998-02-18 |
Family
ID=17493421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27096088A Expired - Fee Related JP2716749B2 (en) | 1988-10-28 | 1988-10-28 | Optical system support device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2716749B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007179712A (en) * | 2005-12-28 | 2007-07-12 | Sony Corp | Optical pickup and optical disk device |
-
1988
- 1988-10-28 JP JP27096088A patent/JP2716749B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02121125A (en) | 1990-05-09 |
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| LAPS | Cancellation because of no payment of annual fees |