JPS6362934U - - Google Patents
Info
- Publication number
- JPS6362934U JPS6362934U JP15693786U JP15693786U JPS6362934U JP S6362934 U JPS6362934 U JP S6362934U JP 15693786 U JP15693786 U JP 15693786U JP 15693786 U JP15693786 U JP 15693786U JP S6362934 U JPS6362934 U JP S6362934U
- Authority
- JP
- Japan
- Prior art keywords
- magneto
- protective cover
- magnetic material
- optical head
- magnetic
- 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
- 239000000696 magnetic material Substances 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 8
- 230000004907 flux Effects 0.000 claims 1
- 230000003993 interaction Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Description
第１図はこの考案の一実施例による光磁気ヘツ
ドの断面図、第２図はこの考案の他の実施例によ
る光磁気ヘツドの斜視図、第３図は従来の光磁気
ヘツドの断面図である。
図において、１は光磁気式記録ヘツド、２０１
は集光レンズ、２０３は集光レンズ駆動装置、２
０４は駆動コイル、２０７Ａは保護カバー、２０
８は端壁、２０９は開口、３Ａは磁界発生装置、
３０４は磁性コア、６は磁性材、６０１は環状部
分である。なお、各図中同一符号は同一または相
当部分を示す。
FIG. 1 is a sectional view of a magneto-optical head according to one embodiment of the invention, FIG. 2 is a perspective view of a magneto-optical head according to another embodiment of the invention, and FIG. 3 is a sectional view of a conventional magneto-optical head. be. In the figure, 1 is a magneto-optical recording head, 201
2 is a condensing lens; 203 is a condensing lens driving device;
04 is the drive coil, 207A is the protective cover, 20
8 is an end wall, 209 is an opening, 3A is a magnetic field generator,
304 is a magnetic core, 6 is a magnetic material, and 601 is an annular portion. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
る集光レンズ、駆動コイルと永久磁石とを有しこ
の駆動コイルに通電することにより前記永久磁石
の磁束との電磁作用により前記集光レンズを必要
な方向に移動させる集光レンズ駆動装置、この集
光レンズ駆動装置を収納すると共に前記光磁気式
記録デイスクに対向した端壁に前記集光レンズの
ための開口を有する保護カバー、および情報の記
録あるいは消去時に前記光スポツトに磁界を印加
する磁界発生装置を備えた光磁気ヘツドにおいて
、前記磁界発生装置を前記保護カバーの前記端壁
以外の壁に装着すると共に前記保護カバーに前記
磁界発生装置から前記開口に到る磁性体部を設け
たことを特徴とする光磁気ヘツド。 (2) 磁性体部が保護カバーを全体的に磁性材で
構成することにより形成されていることを特徴と
する実用新案登録請求の範囲第１項記載の光磁気
ヘツド。 (3) 磁性体部が保護カバーの一部を磁性材で構
成することにより形成されていることを特徴とす
る実用新案登録請求の範囲第１項記載の光磁気ヘ
ツド。 (4) 磁性体部が保護カバーとは別体の磁性材か
らなり、この磁性材が前記保護カバーに装着され
ていることを特徴とする実用新案登録請求の範囲
第１項記載の光磁気ヘツド。 (5) 磁性材が保護カバーの端壁の開口を包囲す
るリング状部分を有することを特徴とする実用新
案登録請求の範囲第３項または第４項記載の光磁
気ヘツド。 (6) 磁界発生装置が磁性コアを有することを特
徴とする実用新案登録請求の範囲第１項記載の光
磁気ヘツド。[Claims for Utility Model Registration] (1) It has a condensing lens that focuses a light spot on a magneto-optical recording disk, a drive coil and a permanent magnet, and by energizing the drive coil, electromagnetic interaction with the magnetic flux of the permanent magnet is achieved. A condensing lens driving device that moves the condensing lens in a required direction by action, and an opening for the condensing lens that accommodates the condensing lens driving device and an end wall facing the magneto-optical recording disk. In the magneto-optical head, the magnetic field generating device is attached to a wall other than the end wall of the protective cover, and the magnetic field generating device applies a magnetic field to the optical spot when recording or erasing information. 1. A magneto-optical head, characterized in that a protective cover is provided with a magnetic body portion extending from the magnetic field generating device to the opening. (2) The magneto-optical head according to claim 1, wherein the magnetic material portion is formed by making the protective cover entirely of a magnetic material. (3) The magneto-optical head according to claim 1, wherein the magnetic material portion is formed by forming a part of the protective cover from a magnetic material. (4) The magneto-optical head according to claim 1, wherein the magnetic material portion is made of a magnetic material separate from the protective cover, and the magnetic material is attached to the protective cover. . (5) The magneto-optical head according to claim 3 or 4, wherein the magnetic material has a ring-shaped portion surrounding the opening in the end wall of the protective cover. (6) The magneto-optical head according to claim 1, wherein the magnetic field generating device has a magnetic core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986156937U JPH075551Y2 (en) | 1986-10-13 | 1986-10-13 | Magneto-optical head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986156937U JPH075551Y2 (en) | 1986-10-13 | 1986-10-13 | Magneto-optical head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6362934U true JPS6362934U (en) | 1988-04-26 |
| JPH075551Y2 JPH075551Y2 (en) | 1995-02-08 |
Family
ID=31079022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986156937U Expired - Lifetime JPH075551Y2 (en) | 1986-10-13 | 1986-10-13 | Magneto-optical head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH075551Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5794906A (en) * | 1980-12-05 | 1982-06-12 | Ricoh Co Ltd | Optical magnetic recorder |
| JPS59148159A (en) * | 1983-02-15 | 1984-08-24 | Canon Inc | Optical pickup device |
| JPS60214439A (en) * | 1984-04-11 | 1985-10-26 | Seiko Epson Corp | Optomagnetic head |
-
1986
- 1986-10-13 JP JP1986156937U patent/JPH075551Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5794906A (en) * | 1980-12-05 | 1982-06-12 | Ricoh Co Ltd | Optical magnetic recorder |
| JPS59148159A (en) * | 1983-02-15 | 1984-08-24 | Canon Inc | Optical pickup device |
| JPS60214439A (en) * | 1984-04-11 | 1985-10-26 | Seiko Epson Corp | Optomagnetic head |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH075551Y2 (en) | 1995-02-08 |
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