JPS63176932U - - Google Patents
Info
- Publication number
- JPS63176932U JPS63176932U JP15693686U JP15693686U JPS63176932U JP S63176932 U JPS63176932 U JP S63176932U JP 15693686 U JP15693686 U JP 15693686U JP 15693686 U JP15693686 U JP 15693686U JP S63176932 U JPS63176932 U JP S63176932U
- Authority
- JP
- Japan
- Prior art keywords
- magneto
- condensing lens
- recording disk
- optical recording
- protective cover
- 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
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000004907 flux Effects 0.000 claims 1
- 230000003993 interaction Effects 0.000 claims 1
- 239000000696 magnetic material Substances 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図および第３図はそれぞれこの
考案の他の実施例による光磁気ヘツドの断面図、
第４図は従来の光磁気ヘツドの断面図である。
図において、１は光磁気式記録デイスク、２０
１は集光レンズ、２０３は集光レンズ駆動装置、
２０４は駆動コイル、２０７，２０７Ａは保護カ
バー、２１０は磁気シールド部材、３は磁界発生
装置である。なお、各図中同一符号は同一または
相当部を示す。
FIG. 1 is a sectional view of a magneto-optical head according to one embodiment of this invention, and FIGS. 2 and 3 are sectional views of magneto-optical heads according to other embodiments of this invention, respectively.
FIG. 4 is a sectional view of a conventional magneto-optical head. In the figure, 1 is a magneto-optical recording disk, 20
1 is a condensing lens, 203 is a condensing lens driving device,
204 is a drive coil, 207 and 207A are protective covers, 210 is a magnetic shielding member, and 3 is a magnetic field generator. Note that the same reference numerals in each figure indicate the same or equivalent 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、および
前記光磁気式記録デイスクをはさんで前記集光レ
ンズの反対側に配設されて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、前記集光レ
ンズ駆動装置と光磁気式記録デイスクとの間に磁
気シールド部材を配設したことを特徴とする光磁
気ヘツド。 (2) 集光レンズ駆動装置が保護カバー内に配設
されているものにおいて、磁気シールド部材を前
記保護カバーの光磁気式記録デイスクに対向した
壁を磁性材料で形成することによつて構成したこ
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) 集光レンズ駆動装置が保護カバー内に配設
されているものにおいて、磁気シールド部材を前
記保護カバーの光磁気式記録デイスクに対向した
壁に取付けた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 a condensing lens drive device that is disposed on the opposite side of the condensing lens across the magneto-optical recording disk and drives the condensing lens when recording or erasing information. 1. A magneto-optical head equipped with a magnetic field generating device for applying a magnetic field to a spot, characterized in that a magnetic shielding member is disposed between the condenser lens driving device and the magneto-optical recording disk. (2) In the device in which the condensing lens driving device is disposed within the protective cover, the magnetic shielding member is constructed by forming a wall of the protective cover facing the magneto-optical recording disk from a magnetic material. 1. A magneto-optical head according to claim 1, which is characterized in that: (3) A utility model registration request for a device in which a condensing lens driving device is disposed within a protective cover, characterized in that a magnetic shielding member is attached to the wall of the protective cover facing the magneto-optical recording disk. The magneto-optical head according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15693686U JPS63176932U (en) | 1986-10-13 | 1986-10-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15693686U JPS63176932U (en) | 1986-10-13 | 1986-10-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63176932U true JPS63176932U (en) | 1988-11-16 |
Family
ID=31079020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15693686U Pending JPS63176932U (en) | 1986-10-13 | 1986-10-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63176932U (en) |
-
1986
- 1986-10-13 JP JP15693686U patent/JPS63176932U/ja active Pending
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