JPS6236433U - - Google Patents
Info
- Publication number
- JPS6236433U JPS6236433U JP12709885U JP12709885U JPS6236433U JP S6236433 U JPS6236433 U JP S6236433U JP 12709885 U JP12709885 U JP 12709885U JP 12709885 U JP12709885 U JP 12709885U JP S6236433 U JPS6236433 U JP S6236433U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- driven body
- magnetic field
- base body
- optical 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
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案の一実施例による光ピツクアツ
プの要部平面図、第２図は別の実施例による光ピ
ツクアツプの要部平面図、第３図は従来の光ピツ
クアツプの外観斜視図、第４図は同上の要部平面
図である。
なお図面に用いた符号において、１……基体、
５……レンズ枠、６……対物レンズ、７……トラ
ツキング動作用コイル、９，９′……コイルボビ
ン、９０，９０′……面、である。
FIG. 1 is a plan view of the essential parts of an optical pickup according to one embodiment of the present invention, FIG. 2 is a plan view of the essential parts of an optical pickup according to another embodiment, and FIG. 3 is a perspective view of the appearance of a conventional optical pickup. Figure 4 is a plan view of the main parts of the same as above. In addition, in the symbols used in the drawings, 1...substrate,
5... Lens frame, 6... Objective lens, 7... Tracking operation coil, 9, 9'... Coil bobbin, 90, 90'... Surface.
Claims (1)
が記録媒体の記録面に関して垂直な方向及び水平
な方向に夫々移動可能なようにこの対物レンズ部
を上記基体に支持させる為の支持手段と、上記対
物レンズ部を移動させる為の駆動手段とを夫々具
備し、上記駆動手段が、上記基体に設けられた磁
界形成手段とこの磁界形成手段に近接対向配置さ
れて上記対物レンズ部に設けられ且つ磁界によつ
て力を受ける被駆動体とから構成された光ピツク
アツプにおいて、 上記被駆動体が変位する際の抗力の変化に略比
例して変化する駆動力が得らたるように、この被
駆動体に対向する上記磁界形成手段の面が屈曲さ
れていることを特徴とする光ピツクアツプ。 ２ 上記被駆動体が、上記記録媒体の記録面に垂
直な面内及び平行な面内のうちの少なくとも一方
の面内で非直線的に変位するように上記対物レン
ズ部が上記基体に支持されており、この被駆動体
が変位する際の抗力が略一定であつて、上記磁界
形成手段の上記面が、この被駆動体の変位軌道か
ら略一定の間隔となるように屈曲されていること
を特徴とする実用新案登録請求の範囲第１項に記
載の光ピツクアツプ。 ３ 上記対物レンズ部が、上記記録媒体の記録面
に平行な面内で回転移動し得るように上記基体に
支持されており、上記磁界形成手段の上記面がこ
の対物レンズ部の回転軌道に沿つた円弧状に湾曲
して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２項に記載の光ピツクアツプ。[Claims for Utility Model Registration] 1. A base body, an objective lens part, and a structure in which the objective lens part is attached to the base body so that the objective lens part can be moved in a direction perpendicular to the recording surface of a recording medium and in a horizontal direction, respectively. A support means for supporting the objective lens part and a drive means for moving the objective lens part are respectively provided, and the drive means is disposed close to and opposite to the magnetic field forming means provided on the base body. In an optical pickup comprised of a driven body that is provided in the objective lens section and receives force from a magnetic field, a driving force that changes approximately in proportion to a change in drag when the driven body is displaced is obtained. An optical pickup characterized in that a surface of the magnetic field forming means facing the driven body is bent so that the driven body is bent. 2. The objective lens section is supported by the base body so that the driven body is displaced non-linearly in at least one of a plane perpendicular to and parallel to the recording surface of the recording medium. and the resistance force when the driven body is displaced is substantially constant, and the surface of the magnetic field forming means is bent so as to be at a substantially constant distance from the displacement trajectory of the driven body. An optical pickup according to claim 1 of the utility model registration claim, characterized in that: 3. The objective lens section is supported by the base body so as to be rotationally movable in a plane parallel to the recording surface of the recording medium, and the surface of the magnetic field forming means is moved along the rotation trajectory of the objective lens section. The optical pickup according to claim 2 of the utility model registration claim, characterized in that it is curved into an arcuate shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12709885U JPS6236433U (en) | 1985-08-20 | 1985-08-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12709885U JPS6236433U (en) | 1985-08-20 | 1985-08-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6236433U true JPS6236433U (en) | 1987-03-04 |
Family
ID=31021522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12709885U Pending JPS6236433U (en) | 1985-08-20 | 1985-08-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6236433U (en) |
-
1985
- 1985-08-20 JP JP12709885U patent/JPS6236433U/ja active Pending
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