JPS61136329U - - Google Patents
Info
- Publication number
- JPS61136329U JPS61136329U JP1902185U JP1902185U JPS61136329U JP S61136329 U JPS61136329 U JP S61136329U JP 1902185 U JP1902185 U JP 1902185U JP 1902185 U JP1902185 U JP 1902185U JP S61136329 U JPS61136329 U JP S61136329U
- Authority
- JP
- Japan
- Prior art keywords
- support member
- objective lens
- focusing
- focusing direction
- tracking
- 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 4
- 230000005484 gravity Effects 0.000 claims 1
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案の光ヘツドの一実施例の構成を
示す分解斜視図、第２図、第３図および第４図は
同じくその平面図、側面図および断面図である。
１…対物レンズ、２…支持部材、３…ベース、
３ａ…突部、４ａ，４ｂ…フオーカシング用板ば
ね、５…中継部材、６ａ，６ｂ…トラツキング用
板ばね、７，８…ポスト、９ａ，９ｂ…フオーカ
シングコイル、１０ａ，１０ｂ…トラツキングコ
イル、１１，１２…ヨーク、１３ａ，１３ｂ，１
４ａ，１４ｂ…永久磁石、１５…プリント基板、
１６…バランサ、１７…ストツパ部材、１８…プ
リズム。
FIG. 1 is an exploded perspective view showing the structure of an embodiment of the optical head of the present invention, and FIGS. 2, 3, and 4 are a plan view, a side view, and a sectional view thereof. 1... Objective lens, 2... Support member, 3... Base,
3a... Projection, 4a, 4b... Focusing plate spring, 5... Relay member, 6a, 6b... Tracking plate spring, 7, 8... Post, 9a, 9b... Focusing coil, 10a, 10b... Tracking coil , 11, 12...Yoke, 13a, 13b, 1
4a, 14b...Permanent magnet, 15...Printed circuit board,
16... Balancer, 17... Stopper member, 18... Prism.
Claims (1)
と、この対物レンズを支持する支持部材と、この
支持部材をフオーカシング用板ばねを介して中継
部材に連結し、この中継部材をトラツキング用板
ばねを介してベースに連結して、対物レンズをそ
の光軸と平行なフオーカシング方向およびこのフ
オーカシング方向と直向するトラツキング方向に
移動可能に支持する支持機構と、対物レンズを前
記フオーカシング方向およびトラツキング方向に
駆動する駆動機構とを具える光ヘツドにおいて、
前記駆動機構によつて前記支持部材に作用する力
の中心点と該支持部材全体の重心位置とを一致さ
せるように、前記支持部材にバランサを設けると
共に、前記ベースに前記バランサに当接して前記
支持部材のフオーカシング方向への移動による前
記記録媒体との接触を防止するためのストツパ部
材を設けたことを特徴とする光ヘツド。 An objective lens that irradiates a light spot onto a recording medium, a support member that supports this objective lens, this support member is connected to a relay member via a focusing plate spring, and this relay member is connected via a tracking plate spring. a support mechanism connected to the base and movably supporting the objective lens in a focusing direction parallel to the optical axis thereof and in a tracking direction perpendicular to the focusing direction; and a support mechanism for driving the objective lens in the focusing direction and the tracking direction. In an optical head comprising a drive mechanism,
A balancer is provided on the support member so that the center point of the force acting on the support member by the drive mechanism coincides with the center of gravity of the entire support member, and the base is in contact with the balancer and the An optical head characterized in that a stopper member is provided to prevent the support member from coming into contact with the recording medium due to movement in the focusing direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1902185U JPS61136329U (en) | 1985-02-15 | 1985-02-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1902185U JPS61136329U (en) | 1985-02-15 | 1985-02-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61136329U true JPS61136329U (en) | 1986-08-25 |
Family
ID=30508205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1902185U Pending JPS61136329U (en) | 1985-02-15 | 1985-02-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61136329U (en) |
-
1985
- 1985-02-15 JP JP1902185U patent/JPS61136329U/ja active Pending
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