JPS6161619U - - Google Patents
Info
- Publication number
- JPS6161619U JPS6161619U JP14429384U JP14429384U JPS6161619U JP S6161619 U JPS6161619 U JP S6161619U JP 14429384 U JP14429384 U JP 14429384U JP 14429384 U JP14429384 U JP 14429384U JP S6161619 U JPS6161619 U JP S6161619U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- protective cover
- support frame
- information recording
- magnetic field
- 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 description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案に係る装置における磁気回路の
模式図、第２図は他の実施例における磁気回路の
模式図、第３図は従来例に係る光情報記録装置の
一部切欠縦断面図、第４図はその磁気回路の模式
図である。
１…対物レンズ、２…支持枠、５…移動枠、６
…駆動コイル、１２…軟磁性保護カバー、１４…
接地線。
FIG. 1 is a schematic diagram of a magnetic circuit in a device according to the present invention, FIG. 2 is a schematic diagram of a magnetic circuit in another embodiment, and FIG. 3 is a partially cutaway longitudinal sectional view of an optical information recording device according to a conventional example. , FIG. 4 is a schematic diagram of the magnetic circuit. 1... Objective lens, 2... Support frame, 5... Moving frame, 6
...Drive coil, 12...Soft magnetic protective cover, 14...
ground wire.
Claims (1)
媒体の面と垂直方向に光軸を備えた対物レンズと
、この対物レンズを中心部に固定した支持枠と、
磁界中に配設され且つこの支持枠に巻回されたコ
イルとからなり、このコイルに流す電流に応じて
前記対物レンズを多次元に移動可能とした対物レ
ンズ、駆動装置において、磁界を発生する磁石、
ヨーク、前記移動枠等を被覆し、中央の開口穴よ
り対物レンズ部を露出する保護カバーの材質を軟
磁性材料として、この保護カバーを電気的に接地
したことを特徴とする光情報記録装置の対物レン
ズ駆動装置。 an objective lens disposed facing an optical information recording medium and having an optical axis perpendicular to the surface of the recording medium; a support frame fixed to the center of the objective lens;
A magnetic field is generated in an objective lens and drive device that is composed of a coil arranged in a magnetic field and wound around this support frame, and that allows the objective lens to be moved in multiple dimensions according to the current flowing through the coil. magnet,
An optical information recording device characterized in that a protective cover covering a yoke, the moving frame, etc. and exposing an objective lens portion through a central opening is made of a soft magnetic material, and the protective cover is electrically grounded. Objective lens drive device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14429384U JPS6161619U (en) | 1984-09-26 | 1984-09-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14429384U JPS6161619U (en) | 1984-09-26 | 1984-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6161619U true JPS6161619U (en) | 1986-04-25 |
Family
ID=30702577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14429384U Pending JPS6161619U (en) | 1984-09-26 | 1984-09-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6161619U (en) |
-
1984
- 1984-09-26 JP JP14429384U patent/JPS6161619U/ja active Pending
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