JPS62158630U - - Google Patents
Info
- Publication number
- JPS62158630U JPS62158630U JP4380986U JP4380986U JPS62158630U JP S62158630 U JPS62158630 U JP S62158630U JP 4380986 U JP4380986 U JP 4380986U JP 4380986 U JP4380986 U JP 4380986U JP S62158630 U JPS62158630 U JP S62158630U
- Authority
- JP
- Japan
- Prior art keywords
- coil
- objective lens
- lens
- optical axis
- spaced apart
- 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 5
- 230000004907 flux Effects 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 claims 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図ａ及びｂは本考案によるレンズ駆動装置
を示した平面図及び側面図、第２図はダンパ３３
を示した図、第３図ａは本考案にかかるコイルを
示した斜視図、第３図ｂは第３図ａのＡ―Ａ断面
を示した断面図、第４図ａは既に開発されたレン
ズ駆動装置を示す斜視図、第４図ｂは第４図ａに
示されたコイルの断面図。
主要部分の符号の説明、２１……対物レンズ、
２２……レンズホルダ、２４……フオーカシング
コイル、２４ａ，２５ａ……作用辺、２５……ト
ラツキングコイル、２６……支持部材、２８……
マグネツト、２９……ヨーク、３０……磁気ギヤ
ツプ。
1A and 1B are plan and side views showing the lens driving device according to the present invention, and FIG. 2 is a damper 33.
FIG. 3a is a perspective view showing the coil according to the present invention, FIG. 3b is a sectional view taken along the line AA in FIG. 3a, and FIG. 4a is a coil according to the present invention. FIG. 4b is a perspective view showing the lens driving device, and FIG. 4b is a sectional view of the coil shown in FIG. 4a. Explanation of symbols of main parts, 21...Objective lens,
22... Lens holder, 24... Focusing coil, 24a, 25a... Working side, 25... Tracking coil, 26... Support member, 28...
Magnet, 29... Yoke, 30... Magnetic gap.
Claims (1)
射せしめるための対物レンズ及び該対物レンズを
保持するレンズホルダを前記対物レンズの光軸方
向及びこれに直角な方向において移動自在に且つ
前記対物レンズの光軸が前記記録面に対して直角
となるように支持する支持機構と、前記対物レン
ズ及びレンズホルダに駆動力を付与する駆動手段
とを含むレンズ駆動装置であつて、前記駆動手段
は、コイル中心軸が前記光軸方向に平行な第１コ
イルと、コイル中心軸が前記光軸方向に垂直な第
２コイルと、平行磁束を生ずる単一の磁気ギヤツ
プを有する磁気回路とからなり、前記磁気ギヤツ
プ内に前記第１及び第２コイルの一部を作用辺と
して存在させ且つ前記作用辺のいずれか一方の作
用辺をそのコイルの中心軸方向に離間させ、離間
した一方の作用辺の間に他方の作用辺を配置して
いることを特徴とするレンズ駆動装置。 (2) コイルの中心軸方向に離間した一方の作用
辺の該コイルの半径方向の厚みと、離間した一方
の作用辺の間に配置される他方の作用辺のコイル
中心軸方向の高さとが一致していることを特徴と
する実用新案登録請求の範囲第１項記載のレンズ
駆動装置。[Claims for Utility Model Registration] (1) An objective lens for irradiating a recording surface of an optical recording medium with spot light and a lens holder for holding the objective lens in the direction of the optical axis of the objective lens and perpendicular thereto. A lens driving device including a support mechanism that supports the objective lens movably in the direction and such that the optical axis of the objective lens is perpendicular to the recording surface, and a driving means that applies a driving force to the objective lens and the lens holder. The driving means includes a first coil whose coil center axis is parallel to the optical axis direction, a second coil whose coil center axis is perpendicular to the optical axis direction, and a single magnetic gap that generates parallel magnetic flux. a magnetic circuit having a magnetic circuit, in which a part of the first and second coils are present as operating sides in the magnetic gap, and one of the operating sides is spaced apart in the direction of the central axis of the coil. A lens driving device characterized in that the other working side is arranged between the working sides separated from each other. (2) The thickness in the radial direction of the coil of one working side spaced apart in the direction of the central axis of the coil, and the height in the direction of the central axis of the coil of the other working side disposed between the working sides spaced apart from each other. The lens driving device according to claim 1, which is the same as that of the utility model registered claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4380986U JPH0452813Y2 (en) | 1986-03-24 | 1986-03-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4380986U JPH0452813Y2 (en) | 1986-03-24 | 1986-03-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62158630U true JPS62158630U (en) | 1987-10-08 |
| JPH0452813Y2 JPH0452813Y2 (en) | 1992-12-11 |
Family
ID=30861020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4380986U Expired JPH0452813Y2 (en) | 1986-03-24 | 1986-03-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0452813Y2 (en) |
-
1986
- 1986-03-24 JP JP4380986U patent/JPH0452813Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0452813Y2 (en) | 1992-12-11 |
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