JPS6172724U - - Google Patents
Info
- Publication number
- JPS6172724U JPS6172724U JP15741884U JP15741884U JPS6172724U JP S6172724 U JPS6172724 U JP S6172724U JP 15741884 U JP15741884 U JP 15741884U JP 15741884 U JP15741884 U JP 15741884U JP S6172724 U JPS6172724 U JP S6172724U
- Authority
- JP
- Japan
- Prior art keywords
- lens holder
- actuator
- focus coil
- magnetic circuit
- objective lens
- 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.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims 2
- 230000007935 neutral effect Effects 0.000 claims 1
- 239000000696 magnetic material Substances 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本案に係る対物レンズアクチユエータ
を示す分解斜視図、第２図はその要部拡大斜視図
、第３図・第４図はそのトラツキング方向の動作
を示す平面図、第５図はそのフオーカス方向の動
作を示す側断面図、第６図は従来例を示す平面図
である。
１０…アクチユエータベース、１１，１１…マ
グネツト・ヨーク体、１２…軸、１３…対物レン
ズホルダ、１４…フオーカスコイル、１５，１５
，１５，１５…ラジアルコイル、１６，１６…磁
性体、１７…対物レンズ。
Fig. 1 is an exploded perspective view showing the objective lens actuator according to the present invention, Fig. 2 is an enlarged perspective view of its main parts, Figs. 3 and 4 are plan views showing its operation in the tracking direction, and Fig. 5. 6 is a side sectional view showing the operation in the focus direction, and FIG. 6 is a plan view showing the conventional example. 10... Actuator base, 11, 11... Magnetic yoke body, 12... Axis, 13... Objective lens holder, 14... Focus coil, 15, 15
, 15, 15... Radial coil, 16, 16... Magnetic material, 17... Objective lens.
Claims (1)
レンズホルダーをベース面に沿つて回動可能にか
つ上下にスライド可能に支持し、前記レンズホル
ダにその回動中心を中心とする円筒状に巻かれた
フオーカスコイルと、このフオーカスコイルの外
周面の所要の位置に設けた複数のラジアルコイル
とを備え、この両コイルを前記ベース上に設けた
マグネツトとヨーク体でなる磁気回路に組み合わ
せてなる対物レンズアクチユエータにおいて、前
記フオーカスコイルの周面に、前記磁気回路の端
縁部に位置するように磁性体を設け、この磁性体
の端部と前記磁気回路との吸引力が均衡状態のと
き前記レンズホルダが中立状態を保つようにした
対物レンズアクチユエータの中立保持装置。 A lens holder with an objective lens provided on an actuator base is supported so as to be rotatable along the base surface and slidable up and down, and a lens holder is provided with a lens holder that is wound into a cylindrical shape around the center of rotation of the lens holder. An objective lens comprising a focus coil and a plurality of radial coils provided at required positions on the outer peripheral surface of the focus coil, and in which both coils are combined with a magnetic circuit consisting of a magnet and a yoke provided on the base. In the actuator, a magnetic body is provided on the peripheral surface of the focus coil so as to be located at an edge of the magnetic circuit, and when the attractive force between the edge of the magnetic body and the magnetic circuit is in a balanced state. A neutrality holding device for an objective lens actuator that maintains the lens holder in a neutral state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984157418U JPH0433547Y2 (en) | 1984-10-17 | 1984-10-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984157418U JPH0433547Y2 (en) | 1984-10-17 | 1984-10-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6172724U true JPS6172724U (en) | 1986-05-17 |
| JPH0433547Y2 JPH0433547Y2 (en) | 1992-08-11 |
Family
ID=30715413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984157418U Expired JPH0433547Y2 (en) | 1984-10-17 | 1984-10-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0433547Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01317234A (en) * | 1988-06-16 | 1989-12-21 | Sankyo Seiki Mfg Co Ltd | Objective lens driving device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58179635U (en) * | 1982-05-25 | 1983-12-01 | 株式会社三協精機製作所 | Pickup objective lens drive device |
-
1984
- 1984-10-17 JP JP1984157418U patent/JPH0433547Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58179635U (en) * | 1982-05-25 | 1983-12-01 | 株式会社三協精機製作所 | Pickup objective lens drive device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01317234A (en) * | 1988-06-16 | 1989-12-21 | Sankyo Seiki Mfg Co Ltd | Objective lens driving device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0433547Y2 (en) | 1992-08-11 |