JPS6186829U - - Google Patents
Info
- Publication number
- JPS6186829U JPS6186829U JP17131384U JP17131384U JPS6186829U JP S6186829 U JPS6186829 U JP S6186829U JP 17131384 U JP17131384 U JP 17131384U JP 17131384 U JP17131384 U JP 17131384U JP S6186829 U JPS6186829 U JP S6186829U
- Authority
- JP
- Japan
- Prior art keywords
- magneto
- magnetic field
- optical disk
- bias magnetic
- acousto
- 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
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案実施例の光学系を示す図、第２
図はデイスク上でのレーザ光スポツトを示す図、
第３図は、光磁気デイスク装置のブロツク図、第
４図は光磁気デイスクの構造を示す図、第５図は
音響光学素子の動作を示す図、第６図はデイスク
上に焦光されるレーザ光を示す図である。
８……光磁気デイスク、９……バイアス磁界用
コイル、３２……音響光学素子。
Fig. 1 is a diagram showing the optical system of the embodiment of the present invention;
The figure shows the laser beam spot on the disk.
Figure 3 is a block diagram of the magneto-optical disk device, Figure 4 is a diagram showing the structure of the magneto-optical disk, Figure 5 is a diagram showing the operation of the acousto-optic element, and Figure 6 is a diagram showing the focusing of light onto the disk. It is a figure showing a laser beam. 8... Magneto-optical disk, 9... Coil for bias magnetic field, 32... Acousto-optic element.
Claims (1)
レーザ光を照射することにより情報を記録する光
磁気デイスク装置において、前記記録用バイアス
磁界と逆方向の消去用バイアス磁界を付与する手
段と、光学系に設けられた音響光学素子を備え、
消去時には前記音響光学素子に高周波信号を印加
して、レーザ光を回析せしめることを特徴とする
光磁気デイスク装置。 In a magneto-optical disk device that records information by applying a recording bias magnetic field to a magneto-optical disk and irradiating it with laser light, there is provided a means for applying an erasing bias magnetic field in a direction opposite to the recording bias magnetic field, and an optical system. comprising an acousto-optic element provided;
A magneto-optical disk device, characterized in that during erasing, a high frequency signal is applied to the acousto-optic element to cause the laser beam to be diffracted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17131384U JPH0445134Y2 (en) | 1984-11-12 | 1984-11-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17131384U JPH0445134Y2 (en) | 1984-11-12 | 1984-11-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6186829U true JPS6186829U (en) | 1986-06-06 |
| JPH0445134Y2 JPH0445134Y2 (en) | 1992-10-23 |
Family
ID=30729005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17131384U Expired JPH0445134Y2 (en) | 1984-11-12 | 1984-11-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0445134Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6278740A (en) * | 1985-10-02 | 1987-04-11 | Matsushita Electric Ind Co Ltd | Information recording master recording method |
-
1984
- 1984-11-12 JP JP17131384U patent/JPH0445134Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6278740A (en) * | 1985-10-02 | 1987-04-11 | Matsushita Electric Ind Co Ltd | Information recording master recording method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0445134Y2 (en) | 1992-10-23 |
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