JPS6456026U - - Google Patents
Info
- Publication number
- JPS6456026U JPS6456026U JP15235887U JP15235887U JPS6456026U JP S6456026 U JPS6456026 U JP S6456026U JP 15235887 U JP15235887 U JP 15235887U JP 15235887 U JP15235887 U JP 15235887U JP S6456026 U JPS6456026 U JP S6456026U
- Authority
- JP
- Japan
- Prior art keywords
- magneto
- optical disk
- objective lens
- disk device
- records
- 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
- 230000001678 irradiating effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 1
Description
第１図はこの考案の第一の実施例を示す原理説
明図、第２図は正面図、第３図はこの考案の第二
の実施例を示す正面図、第４図は従来例を示す正
面図、第５図はその消去／記録動作を示す説明図
である。
１５……対物レンズ、１６……光磁気デイスク
、１８……半導体レーザ（レーザ光源）、Ｐ１…
…記録用ビーム、Ｐ２……消去用ビーム、Ｓ１…
…微小スポツト、Ｓ２……長円スポツト。
Fig. 1 is a principle explanatory diagram showing the first embodiment of this invention, Fig. 2 is a front view, Fig. 3 is a front view showing a second embodiment of this invention, and Fig. 4 is a conventional example. The front view and FIG. 5 are explanatory diagrams showing the erasing/recording operation. 15...Objective lens, 16...Magneto-optical disk, 18...Semiconductor laser (laser light source), P1 ...
... Recording beam, P 2 ... Erasing beam, S 1 ...
...Minute spot, S2 ...Oval spot.
Claims (1)
イスクに対し１つの対物レンズを介して照射して
情報の記録又は消去を行なう光磁気デイスク装置
において、前記対物レンズに対し有効視野径内か
ら入射して前記光磁気デイスク上に微小スポツト
を集光形成させる記録用ビームと、この対物レン
ズに対し有効視野径外から入射して前記光磁気デ
イスク上に長円スポツトを形成させる消去用ビー
ムとを設定したことを特徴とする光磁気デイスク
装置。 In a magneto-optical disk device that records or erases information by irradiating light emitted from a single laser light source onto a magneto-optical disk through a single objective lens, a magneto-optical disk device that records or erases information by irradiating light emitted from a single laser light source onto a magneto-optical disk through a single objective lens; a recording beam that condenses and forms a minute spot on the magneto-optical disk, and an erasing beam that enters the objective lens from outside the effective field of view and forms an elliptical spot on the magneto-optical disk. A magneto-optical disk device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15235887U JPS6456026U (en) | 1987-10-05 | 1987-10-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15235887U JPS6456026U (en) | 1987-10-05 | 1987-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6456026U true JPS6456026U (en) | 1989-04-06 |
Family
ID=31427212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15235887U Pending JPS6456026U (en) | 1987-10-05 | 1987-10-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6456026U (en) |
-
1987
- 1987-10-05 JP JP15235887U patent/JPS6456026U/ja active Pending
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