JPS60226032A - Optical video disc player reading device - Google Patents
Optical video disc player reading deviceInfo
- Publication number
- JPS60226032A JPS60226032A JP59084304A JP8430484A JPS60226032A JP S60226032 A JPS60226032 A JP S60226032A JP 59084304 A JP59084304 A JP 59084304A JP 8430484 A JP8430484 A JP 8430484A JP S60226032 A JPS60226032 A JP S60226032A
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- optical axis
- optical
- elastic body
- 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
- G11B7/081—Disposition or mounting of heads or light sources relatively to record carriers for time base error correction by moving the light beam
-
- 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
- G11B7/0901—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 for track following only
- G11B7/0904—Dithered tracking systems
-
- 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
- Optical Recording Or Reproduction (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は記録媒体（ディスク）に光束を集光前１に一＋
ｌ ヌｑハＦ朗ζ弗ゑムｌへＨ橡禾；呂専Ｗ Ｆ ｈ
后−各ル再生する光学式ビデオディスクプレーヤの読出
装置に関するものである。[Detailed Description of the Invention] Industrial Application Field The present invention focuses on a recording medium (disk) in which a light beam is focused on a recording medium (disk).
l nuqha Fro
This invention relates to a reading device for an optical video disc player that plays back individual files.
従来例の構成とその問題点
第１図は従来の光学式ビデオディスクプレーヤの読出装
置の一例を示している。第１図において、２は集光レン
ズ１を内蔵する光学系筒であシ、この光学系筒２は４個
のゴム等よりなる弾性体３により装置の固定部（図示せ
ず）に支持されており、かつ、トラッキング制御用コイ
ル４、タイムベース制御用コイル５が直接に、また、フ
ォーカス制御用コイ／Ｉ；６がコイル取り付は部材１ｏ
を介して取シ付けられていて、各々、固定部側に設けら
れた磁気回路７，８．９によって駆動部を構成している
。Structure of a conventional example and its problems FIG. 1 shows an example of a conventional reading device for an optical video disc player. In FIG. 1, reference numeral 2 denotes an optical system tube that houses a condensing lens 1. This optical system tube 2 is supported by a fixed part (not shown) of the device by four elastic bodies 3 made of rubber or the like. In addition, the tracking control coil 4 and the time base control coil 5 are directly attached, and the focus control coil/I;6 is attached to the member 1o.
The magnetic circuits 7, 8, and 9, each provided on the fixed part side, constitute a driving part.
次に上記従来例の動作について説明する。第１図におい
て、各々のコイル４，５．６に選択的に電流を流すこと
により、光学系筒２は、３軸方向に平行移動を自在に行
なう。第２図に、集光レンズ１とディスク１１との関係
を示す。第２図（イ）においてディスク１１は平面に近
い面精度を有しており、集光レンズ１０光軸をディスク
１１に垂直に設定することにより、ディスク１１の内周
および外周位置において、集光レンズ１の光軸は、ディ
スク１１に対して常に垂直に近い状態に保たれ、ディス
ク１１上には、コマ収差のないスポラトラ集光すること
ができる。しかし、第２図（ロ）に示すようにディスク
１１が平面でない場合、ディスク１１上にコマ収差のな
いスポットを集光するためには、集光レンズ１の光軸を
常にディスク１１の集光部分に対して垂直になるように
保つ機構が必要である。Next, the operation of the above conventional example will be explained. In FIG. 1, by selectively passing current through each coil 4, 5.6, the optical system tube 2 can freely move in parallel in three axial directions. FIG. 2 shows the relationship between the condenser lens 1 and the disk 11. In FIG. 2(A), the disk 11 has a surface precision close to a flat surface, and by setting the optical axis of the condensing lens 10 perpendicular to the disk 11, light can be condensed at the inner and outer circumferential positions of the disk 11. The optical axis of the lens 1 is always maintained close to perpendicular to the disk 11, and light can be focused onto the disk 11 in a sporadic manner without comatic aberration. However, if the disk 11 is not flat as shown in FIG. A mechanism is required to keep it perpendicular to the part.
しかしながら、第１図に示される上記従来例においては
、ディスク１１が平面でなかった場合、集光レンズ１の
光軸を常にディスク１１の集光部分に対して垂直に保つ
ことができず、コマ収差の雇いスポットを集光すること
はできない欠点があったＯ
発明の目的
本発明は上記従来の欠点を改善するものであり、集光レ
ンズを内蔵する光学系筒を光軸方向および光軸と垂直な
方向に平行移動可能とし、かつ、集光レンズの光軸をデ
ィスクに対して常に垂直に保つ機構を有する読出装置を
提供することを目的とするものである。However, in the conventional example shown in FIG. 1, if the disk 11 is not flat, the optical axis of the condenser lens 1 cannot always be kept perpendicular to the condensing part of the disk 11, and the frame OBJECT OF THE INVENTION The present invention aims to improve the above-mentioned drawbacks of the conventional art, and aims to move the optical system tube containing the condensing lens in the direction of the optical axis and with the optical axis. It is an object of the present invention to provide a reading device that is capable of parallel movement in a vertical direction and has a mechanism that always keeps the optical axis of a condensing lens perpendicular to the disk.
発明の構成
本発明の再生装置は、集光レンズを内蔵する光学系筒を
二対の弾性体で支持し、前記光学系筒を前記二対の弾性
体の変形によシ光軸方向および光軸と垂直な方向に移動
可能とすると共に、前記光学系筒を光軸方向および光軸
と垂直な方向に駆動するコイルを前記光学系筒に固定し
、さらに、前記二対の弾性体のうち少なくとも一対を仲
介部材を介して第３の弾性体で支持し、前記第３の弾性
体に変形により光軸に対して揺動可能とすると共に、前
記光学系筒を光軸に対して揺動駆動するコイルを前記仲
介部材に固定したことを特徴とするものである。Structure of the Invention The reproducing device of the present invention supports an optical system tube containing a condensing lens with two pairs of elastic bodies, and changes the optical axis direction and the light beam by deforming the two pairs of elastic bodies. A coil that is movable in a direction perpendicular to the axis and that drives the optical system tube in the optical axis direction and a direction perpendicular to the optical axis is fixed to the optical system tube, and further, one of the two pairs of elastic bodies is fixed to the optical system tube. At least one pair is supported by a third elastic body via an intermediary member, the third elastic body is deformed to be able to swing relative to the optical axis, and the optical system barrel is swingable relative to the optical axis. The present invention is characterized in that a coil to be driven is fixed to the intermediate member.
実施例の説明
以下、本発明の一実施例について、第３図とともに説明
する。第３図において、１３は光学系筒であり、集光レ
ンズ１２を内蔵している。この光学系筒１３は、上部を
ゴム等よりなる第１の弾性体１４により、仲介部材１５
、ゴム等よりなる第３の弾性体１６を介し、装置の固定
部（図示せず）に支持されておシ、また、下部をゴム等
よシなる第２の弾性体１７により装置の固定部（図示せ
ず）に支持されておシ、かつ、トラッキング制御用コイ
ル１８、タイムペース制御用コイル１９が直接に、また
、フォーカス制御用コイル２ｏがコイル取υ付は部材２
４を介して取シ付けられていて、各々、固定部側に設け
られた磁気回路、２１゜２２．２３によって第１の駆動
部を構成している・また前記仲介部材１５には、トラッ
キング方向揺動用コイル２５と、タイムペース方向揺動
用コイル２６が直接取り付けられていて、各々固定部側
に設けられた磁気回路２７．２８によって、第２の駆動
部を構成している。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In FIG. 3, reference numeral 13 denotes an optical system tube, which has a condensing lens 12 built therein. This optical system tube 13 has an upper part formed by a first elastic body 14 made of rubber or the like, and an intermediary member 15
, is supported by a fixing part (not shown) of the device via a third elastic body 16 made of rubber or the like, and the fixing part of the device is supported at the lower part by a second elastic body 17 made of rubber or the like. (not shown), and the tracking control coil 18 and the time pace control coil 19 are directly connected to the coil 2o, and the focus control coil 2o is attached to the coil mounting member 2.
4, and the magnetic circuits provided on the fixing part side, 21° and 22.23 constitute the first driving part. The swing coil 25 and the time pace direction swing coil 26 are directly attached, and the magnetic circuits 27 and 28 provided on the fixed part side constitute a second drive part.
次に、上記実施例の動作について説明する。第３図にお
いて、コイル２０．１８．あるいは１９に電流を流すこ
とにより、光学系筒１３は第１の弾性体１４、第２の弾
性体１７の変形により、光軸方向あるいは、光軸に垂直
な方向に平行移動を行なう。このとき、第３の弾性体１
６の剛性は、第１の弾性体１４の剛性よりも高く、はと
んど変形しない。また、トラッキング方向揺動用コイル
２５またはタイムペース揺動用コイル２６に電流を流す
ことにより、第３の弾性体１６の変形により仲介部材１
６は移動し、これにより、第１の弾性体１４を介して光
学系筒１３に駆動力が伝わり、光学系筒１３は揺動する
。Next, the operation of the above embodiment will be explained. In FIG. 3, coils 20.18. Alternatively, by applying a current to 19, the optical system tube 13 is translated in the optical axis direction or in a direction perpendicular to the optical axis by deformation of the first elastic body 14 and the second elastic body 17. At this time, the third elastic body 1
The rigidity of the elastic body 6 is higher than that of the first elastic body 14, and it hardly deforms. Furthermore, by applying a current to the tracking direction swinging coil 25 or the time pace swinging coil 26, the third elastic body 16 is deformed to cause the intermediary member 1 to
6 moves, and as a result, a driving force is transmitted to the optical system tube 13 via the first elastic body 14, and the optical system tube 13 swings.
発明の効果
本発明は以上のように構成されており、集光レンズを内
蔵する光学系筒を揺動させることができ、かつ光軸方向
および光軸と垂直な方向に平行駆動できるので、集光レ
ンズの光軸をディスクに対して常に垂直に保つことがで
きる。Effects of the Invention The present invention is configured as described above, and since the optical system tube containing the condensing lens can be swung and driven in parallel in the optical axis direction and in the direction perpendicular to the optical axis, the condensing lens can be moved in parallel. The optical axis of the optical lens can always be kept perpendicular to the disk.
第１図は従来の光学式ビデオディスクプレーヤの読出装
置の一例を示す一部断面斜視図、第２図（イ）、（ロ）
はディスクと集光レンズの関係を示した図、第３図は本
発明の一実施例における光学式ビデオディスクプレーヤ
の読出装置の一部断面斜視図である。
１２・・・・・・集光レンズ、１３・・・・・・光学系
筒、１４・・・・・・第１の弾性体、１５・・・・・・
仲介部材、１６・・・・・・第３の弾性体、１７・・・
・・・第２の弾性体、１８・・・・・・トラッキング制
御用コイル、１９・・・・・・タイムベース制御用コイ
ル、２０°°゛°°°フオーカス制御用コイル、２１．
２２．２３・・・・・・磁気回路、２４・・・・・・コ
イル取ｐ付は部材、２５・・・・・・トラッキング方向
揺動用コイル、２６・・・・・・タイムベース方向揺動
用コイル、２７．２８・・・・・・磁気回路。
代理人の氏名 弁理士 中 尾 敏 男 はが１名第２
図
ＩイFig. 1 is a partially sectional perspective view showing an example of a reading device of a conventional optical video disc player, and Figs. 2 (a) and (b).
3 is a diagram showing the relationship between a disc and a condensing lens, and FIG. 3 is a partially sectional perspective view of a reading device for an optical video disc player according to an embodiment of the present invention. 12...Condensing lens, 13...Optical system cylinder, 14...First elastic body, 15...
Intermediary member, 16...Third elastic body, 17...
. . . second elastic body, 18 . . . tracking control coil, 19 . . . time base control coil, 20°°゛°°° focus control coil, 21.
22.23... Magnetic circuit, 24... Coil mounting member, 25... Coil for tracking direction swing, 26... Time base direction swing. Dynamic coil, 27.28...Magnetic circuit. Name of agent: Patent attorney Toshio Nakao, 1st person, 2nd person
Figure I
Claims (1)
、前記光学系筒を前記二対の弾性体の変形によシ光軸方
向および光軸と垂直な方向に移動可能とすると共に、前
記光学系筒を光軸方向および光軸と垂直な方向に駆動す
るコイルを前記光学系筒に固定し、さらに、前記二対の
弾性体のうち少なくとも一対を仲介部材を介して第３の
弾性体で支持し、前記第３の弾性体の変形によ多光軸に
対して揺動可能とすると共に、前記光学系筒を光軸に対
して揺動駆動するコイルを前記仲介部材に固定したこと
を特徴とする光学式ビデオディスクプレーヤの読出装置
。An optical system tube containing a condenser lens is supported by two pairs of elastic bodies, and the optical system tube is movable in the optical axis direction and in a direction perpendicular to the optical axis by deformation of the two pairs of elastic bodies. At the same time, a coil for driving the optical system tube in the optical axis direction and a direction perpendicular to the optical axis is fixed to the optical system tube, and at least one of the two pairs of elastic bodies is connected to a third elastic body through an intermediary member. The third elastic body is supported by an elastic body, and is swingable about multiple optical axes by deformation of the third elastic body, and a coil for swinging the optical system barrel about the optical axis is attached to the intermediate member. A reading device for an optical video disc player, characterized in that it is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59084304A JPS60226032A (en) | 1984-04-25 | 1984-04-25 | Optical video disc player reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59084304A JPS60226032A (en) | 1984-04-25 | 1984-04-25 | Optical video disc player reading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60226032A true JPS60226032A (en) | 1985-11-11 |
Family
ID=13826742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59084304A Pending JPS60226032A (en) | 1984-04-25 | 1984-04-25 | Optical video disc player reading device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60226032A (en) |
-
1984
- 1984-04-25 JP JP59084304A patent/JPS60226032A/en active Pending
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