JPS6044225U - Optical pickup device - Google Patents
Optical pickup deviceInfo
- Publication number
- JPS6044225U JPS6044225U JP13661483U JP13661483U JPS6044225U JP S6044225 U JPS6044225 U JP S6044225U JP 13661483 U JP13661483 U JP 13661483U JP 13661483 U JP13661483 U JP 13661483U JP S6044225 U JPS6044225 U JP S6044225U
- Authority
- JP
- Japan
- Prior art keywords
- pickup device
- optical pickup
- yoke
- magnetic gap
- 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
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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図ａ、 ｂは従来の光ピツクアップ装置の概要を示
す断面斜視図と、上面図、第２図は残留磁気を示す減磁
曲線を示す図、第３図はパーミアンス係数を説明するた
めの磁石の斜視図、第４図はこの考案の光ピツクアップ
装置における磁気構造を示す斜視図、第５図は磁石とト
ラッキングコイルの関係を示す配置図、第６図はこの考
案の他の実施例を示す磁気構造の上面図である。
図中、１，１１は外周ヨーク、２，１２は内周ヨーク、
３ ？ １３ ａ 〜１３ ｄは磁石、４は対物レン
ズ保持体、５は回転軸、６は対物レンズ、７はフォカス
コイル、８はトラッキングコイルを示す。Figures 1a and b are a cross-sectional perspective view and a top view showing an outline of a conventional optical pickup device, Figure 2 is a diagram showing a demagnetization curve showing residual magnetism, and Figure 3 is a diagram showing a permeance coefficient. FIG. 4 is a perspective view showing the magnetic structure of the optical pickup device of this invention, FIG. 5 is a layout diagram showing the relationship between the magnet and the tracking coil, and FIG. 6 shows another embodiment of this invention. FIG. 3 is a top view of the magnetic structure shown in FIG. In the figure, 1 and 11 are outer yokes, 2 and 12 are inner yokes,
3? 13a to 13d are magnets, 4 is an objective lens holder, 5 is a rotating shaft, 6 is an objective lens, 7 is a focus coil, and 8 is a tracking coil.
Claims (1)
ークに固着された磁石と、前記磁気空隙に対物レンズ保
持体に固定されたコイルを位置せ４ しめた光学
ピックアップ装置において、前記磁石が前記ヨークに対
接する面で略正方形とされ、かつ、厚み方向に着磁され
ている複数の磁石を近接配置した磁石群で構成されてい
ることを特徴とする光ピツクアップ装置。In an optical pickup device, a magnet is fixed to one yoke with a predetermined magnetic gap spaced from the other yoke, and a coil fixed to an objective lens holder is positioned in the magnetic gap. An optical pickup device comprising a magnet group in which a plurality of magnets, each of which has a substantially square surface facing the yoke and is magnetized in the thickness direction, are arranged closely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13661483U JPS6044225U (en) | 1983-09-05 | 1983-09-05 | Optical pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13661483U JPS6044225U (en) | 1983-09-05 | 1983-09-05 | Optical pickup device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6044225U true JPS6044225U (en) | 1985-03-28 |
Family
ID=30307110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13661483U Pending JPS6044225U (en) | 1983-09-05 | 1983-09-05 | Optical pickup device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6044225U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62157335A (en) * | 1985-12-27 | 1987-07-13 | Mitsubishi Electric Corp | Objective lens drive device |
| JPS62219338A (en) * | 1986-03-20 | 1987-09-26 | Mitsubishi Electric Corp | Objective lens driver |
| JPS6344221U (en) * | 1986-09-09 | 1988-03-24 | ||
| JPS6344222U (en) * | 1986-09-09 | 1988-03-24 | ||
| JPS6365128U (en) * | 1986-10-20 | 1988-04-28 | ||
| JPH06349089A (en) * | 1993-06-07 | 1994-12-22 | Nec Corp | Objective lens actuator for optical head |
-
1983
- 1983-09-05 JP JP13661483U patent/JPS6044225U/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62157335A (en) * | 1985-12-27 | 1987-07-13 | Mitsubishi Electric Corp | Objective lens drive device |
| JPS62219338A (en) * | 1986-03-20 | 1987-09-26 | Mitsubishi Electric Corp | Objective lens driver |
| JPS6344221U (en) * | 1986-09-09 | 1988-03-24 | ||
| JPS6344222U (en) * | 1986-09-09 | 1988-03-24 | ||
| JPS6365128U (en) * | 1986-10-20 | 1988-04-28 | ||
| JPH06349089A (en) * | 1993-06-07 | 1994-12-22 | Nec Corp | Objective lens actuator for optical head |
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