JPH0328529U - - Google Patents
Info
- Publication number
- JPH0328529U JPH0328529U JP8940089U JP8940089U JPH0328529U JP H0328529 U JPH0328529 U JP H0328529U JP 8940089 U JP8940089 U JP 8940089U JP 8940089 U JP8940089 U JP 8940089U JP H0328529 U JPH0328529 U JP H0328529U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- magnetic pole
- drive coil
- lens
- magnet
- 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図は本考案に係る対物レンズ駆動装置の構
成を一部を分解して示す斜視図であり、第２図は
上記対物レンズ駆動装置の構成を拡大して示す横
断面図である。第３図は上記対物レンズ駆動装置
の構成の他の例を拡大して示す横断面図である。
第４図は上記対物レンズ駆動装置の構成のさらに
他の例を拡大して示す横断面図であり、第５図は
第４図に示した対物レンズ駆動装置の要部となる
マグネツト及びヨークの構成を拡大して示す斜視
図である。第６図は従来の対物レンズ駆動装置の
構成を模式的に示す斜視図である。
２……対物レンズ、３……レンズボビン、５…
…支軸、６……支持孔、８……トラツキングコイ
ル、Ｖ１，Ｖ２……一対の垂直部、１１，１２…
…トラツキング駆動用マグネツト、１３，１４…
…ヨーク、１３ａ，１４ａ……突起部、８ａ，８
ｂ……トラクツキングコイル、Ｖ３……第１の垂
直部、Ｖ４……第２の垂直部、Ｖ５……第３の垂
直部、Ｖ６……第４の垂直部、２０，２１……ヨ
ーク、２０ａ，２０ｂ，２１ａ，２１ｂ……突起
部。
FIG. 1 is a partially exploded perspective view showing the structure of an objective lens drive device according to the present invention, and FIG. 2 is an enlarged cross-sectional view showing the structure of the objective lens drive device. FIG. 3 is an enlarged cross-sectional view of another example of the configuration of the objective lens driving device.
FIG. 4 is an enlarged cross-sectional view of still another example of the configuration of the objective lens driving device, and FIG. 5 shows a magnet and a yoke, which are the main parts of the objective lens driving device shown in FIG. It is a perspective view which expands and shows a structure. FIG. 6 is a perspective view schematically showing the configuration of a conventional objective lens driving device. 2...Objective lens, 3...Lens bobbin, 5...
... Support shaft, 6 ... Support hole, 8 ... Tracking coil, V 1 , V 2 ... Pair of vertical parts, 11, 12 ...
...Tracking drive magnet, 13, 14...
...Yoke, 13a, 14a...Protrusion, 8a, 8
b...Tracking coil, V3 ...First vertical part, V4 ...Second vertical part, V5 ...Third vertical part, V6 ...Fourth vertical part, 20, 21...Yoke, 20a, 20b, 21a, 21b...Protrusion.
Claims (1)
レンズを少なくとも一方向に変位させるように変
位可能に支持されたレンズボビンと、 上記レンズボビンに取付けられ、上記レンズボ
ビンの変位可能な方向に略垂直な複数の垂直部を
有してなる駆動コイルと、 上記駆動コイルのいずれか一の垂直部に、上記
レンズボビンの変位可能な方向に略直交する方向
に対向して配設され、上記駆動コイルに対向する
側に一方の磁極が形成されたマグネツトと、 上記マグネツトの他方の磁極が形成された側に
配設されたヨークとを備え、 上記ヨークは、上記駆動コイルの他の垂直部に
、上記レンズボビンの変位可能な方向に略直交す
る方向に対向する少なくとも一の延設部を有して
なる対物レンズ駆動装置。[Claims for Utility Model Registration] A lens bobbin to which an objective lens is attached and which is movably supported so as to displace the objective lens in at least one direction; a drive coil having a plurality of vertical portions substantially perpendicular to a direction in which the lens bobbin can be displaced; a magnet with one magnetic pole formed on a side facing the drive coil, and a yoke disposed on a side of the magnet with the other magnetic pole formed, the yoke having a magnetic pole other than the drive coil. an objective lens driving device, comprising: at least one extending portion facing in a direction substantially perpendicular to a direction in which the lens bobbin can be displaced;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8940089U JPH0328529U (en) | 1989-07-29 | 1989-07-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8940089U JPH0328529U (en) | 1989-07-29 | 1989-07-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0328529U true JPH0328529U (en) | 1991-03-22 |
Family
ID=31638979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8940089U Pending JPH0328529U (en) | 1989-07-29 | 1989-07-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0328529U (en) |
-
1989
- 1989-07-29 JP JP8940089U patent/JPH0328529U/ja active Pending
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