JPH0328527U - - Google Patents
Info
- Publication number
- JPH0328527U JPH0328527U JP8839489U JP8839489U JPH0328527U JP H0328527 U JPH0328527 U JP H0328527U JP 8839489 U JP8839489 U JP 8839489U JP 8839489 U JP8839489 U JP 8839489U JP H0328527 U JPH0328527 U JP H0328527U
- Authority
- JP
- Japan
- Prior art keywords
- yoke
- attached
- objective lens
- bobbin
- piece
- 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
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案を適用した対物レンズ駆動装置
の一例を示す斜視図、第２図はヨークを拡大して
示す要部拡大斜視図、第３図はヨーク内での磁気
回路を模式的に示す模式図である。第４図は従来
の対物レンズ駆動装置のヨーク内での磁気回路を
模式的に示す模式図、第５図はさらに従来の対物
レンズ駆動装置のヨーク内での磁気回路を模式的
に示す模式図である。
１……対物レンズ、２……ボビン、３，４……
フオーカス駆動コイル、５，６……トラツキング
駆動コイル、７，８……ヨーク、９，１０……マ
グネツト、１６，１７……外ヨーク片、１８，１
９……内ヨーク片、２０，２１，２２，２３，２
４……連結部材。
Fig. 1 is a perspective view showing an example of an objective lens drive device to which the present invention is applied, Fig. 2 is an enlarged perspective view of the main parts showing the yoke, and Fig. 3 is a schematic diagram of the magnetic circuit inside the yoke. FIG. Fig. 4 is a schematic diagram schematically showing a magnetic circuit within the yoke of a conventional objective lens drive device, and Fig. 5 is a schematic diagram further schematically showing a magnetic circuit within the yoke of a conventional objective lens drive device. It is. 1...Objective lens, 2...Bobbin, 3, 4...
Focus drive coil, 5, 6... Tracking drive coil, 7, 8... Yoke, 9, 10... Magnet, 16, 17... Outer yoke piece, 18, 1
9...Inner yoke piece, 20, 21, 22, 23, 2
4...Connecting member.
Claims (1)
ンズの光軸方向及びこれと直交する方向に移動変
位可能に支持されてなるボビンと、 上記ボビンに取付けられる駆動コイルと、 上記駆動コイルを挾んで相対向して配置された
外ヨーク片及び内ヨーク片からなるヨークと、 上記ヨークの少なくともいずれか一方のヨーク
片に密着して取付けられるマグネツトとを備え、 上記ヨークは上記外ヨーク片及び内ヨーク片の
上下両端を磁性材料からなる連結部材で連結され
ていることを特徴とする対物レンズ駆動装置。[Claims for Utility Model Registration] A bobbin to which an objective lens is attached and supported so as to be movable in the direction of the optical axis of the objective lens and a direction orthogonal thereto; a drive coil attached to the bobbin; and a drive coil attached to the bobbin; A yoke consisting of an outer yoke piece and an inner yoke piece arranged opposite to each other with a coil in between, and a magnet attached closely to at least one of the yoke pieces, the yoke being attached to the outer yoke. An objective lens driving device characterized in that the upper and lower ends of the piece and the inner yoke piece are connected by a connecting member made of a magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8839489U JPH0328527U (en) | 1989-07-27 | 1989-07-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8839489U JPH0328527U (en) | 1989-07-27 | 1989-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0328527U true JPH0328527U (en) | 1991-03-22 |
Family
ID=31638013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8839489U Pending JPH0328527U (en) | 1989-07-27 | 1989-07-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0328527U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6129429B2 (en) * | 1979-09-06 | 1986-07-07 | Crane Packing Ltd |
-
1989
- 1989-07-27 JP JP8839489U patent/JPH0328527U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6129429B2 (en) * | 1979-09-06 | 1986-07-07 | Crane Packing Ltd |