JPS648221U - - Google Patents
Info
- Publication number
- JPS648221U JPS648221U JP10098687U JP10098687U JPS648221U JP S648221 U JPS648221 U JP S648221U JP 10098687 U JP10098687 U JP 10098687U JP 10098687 U JP10098687 U JP 10098687U JP S648221 U JPS648221 U JP S648221U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- direction control
- control coil
- yoke
- permanent magnet
- 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 claims 3
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図はこの発明の一実施例のカバーを透視し
て示す平面図、第２図は第１図の―線に沿う
平面での断面図、第３図は従来の対物レンズ駆動
装置のカバーを透視して示す平面図、第４図は第
３図の―線に沿う平面での断面図、第５図は
第３図のものの可動部のみの側面図である。
１……本体フレーム、３……支持軸、４……対
物レンズ、５……対物レンズ保持部材、６……フ
オーカス方向制御用コイル、７……トラツキング
方向制御用コイル、１２……コイルボビン、１３
……外側ヨーク、１４……内側ヨーク、１５……
永久磁石。なお、各図中同一符号は同一または相
当部分を示す。
FIG. 1 is a plan view showing a cover of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIG. 3 is a cover of a conventional objective lens driving device. FIG. 4 is a sectional view taken along the line --- in FIG. 3, and FIG. 5 is a side view of only the movable part of FIG. 3. DESCRIPTION OF SYMBOLS 1... Body frame, 3... Support shaft, 4... Objective lens, 5... Objective lens holding member, 6... Coil for focus direction control, 7... Coil for tracking direction control, 12... Coil bobbin, 13
...Outer yoke, 14...Inner yoke, 15...
permanent magnet. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
ンズと、本体フレームに固定された支持軸と、こ
の支持軸の軸線方向に摺動自在にかつ前記支持軸
のまわりに回動自在に装着され前記対物レンズを
その光軸が前記支持軸と平行になるように支持す
る対物レンズ保持部材と、この対物レンズ保持部
材の外周に形成されたコイルボビンに上下に配置
されたトラツキング方向制御用コイルおよびフオ
ーカス方向制御用コイルと、前記本体フレームに
装着されて前記フオーカス方向制御用コイルなら
びに前記トラツキング方向制御用コイルを通して
磁気回路を形成して配置されたヨークおよび永久
磁石とを備えてなる光デイスク装置の対物レンズ
駆動装置。 (2) 永久磁石とヨークをリング状としフオーカ
ス方向制御用コイルの全周が前記永久磁石および
ヨークによる磁界と作用する実用新案登録請求の
範囲第１項記載の光デイスク装置の対物レンズ駆
動装置。[Claims for Utility Model Registration] (1) An objective lens that forms a light spot on the disk, a support shaft fixed to the main body frame, and an object that is slidable in the axial direction of the support shaft and around the support shaft. an objective lens holding member that is rotatably mounted on the objective lens and supports the objective lens so that its optical axis is parallel to the support axis; and a coil bobbin formed on the outer periphery of the objective lens holding member that is arranged above and below A tracking direction control coil, a focus direction control coil, and a yoke and a permanent magnet mounted on the main body frame and arranged to form a magnetic circuit through the focus direction control coil and the tracking direction control coil. Objective lens drive device for optical disk devices. (2) The objective lens driving device for an optical disk device according to claim 1, wherein the permanent magnet and the yoke are ring-shaped, and the entire circumference of the focus direction control coil interacts with the magnetic field generated by the permanent magnet and the yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10098687U JPS648221U (en) | 1987-07-02 | 1987-07-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10098687U JPS648221U (en) | 1987-07-02 | 1987-07-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS648221U true JPS648221U (en) | 1989-01-18 |
Family
ID=31329564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10098687U Pending JPS648221U (en) | 1987-07-02 | 1987-07-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS648221U (en) |
-
1987
- 1987-07-02 JP JP10098687U patent/JPS648221U/ja active Pending
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