JPH0384923U - - Google Patents
Info
- Publication number
- JPH0384923U JPH0384923U JP14749189U JP14749189U JPH0384923U JP H0384923 U JPH0384923 U JP H0384923U JP 14749189 U JP14749189 U JP 14749189U JP 14749189 U JP14749189 U JP 14749189U JP H0384923 U JPH0384923 U JP H0384923U
- Authority
- JP
- Japan
- Prior art keywords
- magneto
- optical recording
- magnetic field
- objective lens
- pickup
- 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
- 238000000034 method Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000003384 imaging method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Description
第１図は本考案の一実施例を示す光磁気記録用
対物レンズの断面図、第２図は同対物レンズを磁
界変調方式の光磁気記録用ピツクアツプに適用し
た場合の説明図、第３図は従来の光磁気記録用対
物レンズを持つ磁界変調方式の光磁気記録用ピツ
クアツプの概略の構成図である。
３……光磁気デイスク（光磁気記録媒体）、６
……対物レンズ駆動装置、１０……光磁気記録用
対物レンズ、１１……レンズホルダ、１２……磁
界印加用コイル、１３……サーボ信号光学系。
Fig. 1 is a sectional view of an objective lens for magneto-optical recording showing an embodiment of the present invention, Fig. 2 is an explanatory diagram when the same objective lens is applied to a pickup for magneto-optical recording using a magnetic field modulation method, and Fig. 3 1 is a schematic configuration diagram of a magnetic field modulation type magneto-optical recording pickup having a conventional magneto-optical recording objective lens. 3... Magneto-optical disk (magneto-optical recording medium), 6
...Objective lens driving device, 10...Objective lens for magneto-optical recording, 11...Lens holder, 12...Magnetic field application coil, 13...Servo signal optical system.
Claims (1)
構成する対物レンズであつて、 光磁気記録媒体に磁界を印加するための磁界印
加用コイルを同心状に一体に設けたことを特徴と
する光磁気記録用対物レンズ。 (2) 前記磁界印加用コイルが磁界変調方式の光
磁気記録用ピツクアツプにおける磁界印加用コイ
ルであることを特徴とする請求項１記載の光磁気
記録用対物レンズ。[Claims for Utility Model Registration] (1) An objective lens constituting the imaging optical system of a magneto-optical recording pickup, which concentrically integrates a magnetic field applying coil for applying a magnetic field to a magneto-optical recording medium. An objective lens for magneto-optical recording characterized by being provided with. (2) The objective lens for magneto-optical recording according to claim 1, wherein the magnetic field application coil is a magnetic field application coil in a magneto-optical recording pickup using a magnetic field modulation method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14749189U JPH0384923U (en) | 1989-12-21 | 1989-12-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14749189U JPH0384923U (en) | 1989-12-21 | 1989-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0384923U true JPH0384923U (en) | 1991-08-28 |
Family
ID=31694000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14749189U Pending JPH0384923U (en) | 1989-12-21 | 1989-12-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0384923U (en) |
-
1989
- 1989-12-21 JP JP14749189U patent/JPH0384923U/ja active Pending
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