JPS6251313U - - Google Patents
Info
- Publication number
- JPS6251313U JPS6251313U JP14222685U JP14222685U JPS6251313U JP S6251313 U JPS6251313 U JP S6251313U JP 14222685 U JP14222685 U JP 14222685U JP 14222685 U JP14222685 U JP 14222685U JP S6251313 U JPS6251313 U JP S6251313U
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- recording medium
- laminated piezoelectric
- fixed
- fulcrum
- 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 3
- 239000002184 metal Substances 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Optical Recording Or Reproduction (AREA)
Description
第１図は、本考案によるガルバノミラーの断面
図、第２図は、本考案の別の実施例によるガルバ
ノミラーの断面図、第３図は、従来の光学式記録
再生装置の概略図、第４図は、従来のガルバノミ
ラーの断面図である。
１……光源、２……集光レンズ、３……ビーム
形状変換光学系、４……ビームスプリツタ、５…
…トラツキングミラー、６……タンジエンシヤル
ミラー、７……対物レンズ駆動装置、８……対物
レンズ、９……デイスク、１０……情報トラツク
、１１……シリンドリカルレンズ、１２……光検
出器、２１……ミラー、２２……磁石、２３……
ゴム、２４……取り付け金具、２５……コイル、
３１……積層型圧電素子、３２……固定部、３３
……ミラー支持板。
FIG. 1 is a sectional view of a galvano mirror according to the present invention, FIG. 2 is a sectional view of a galvano mirror according to another embodiment of the present invention, and FIG. 3 is a schematic diagram of a conventional optical recording/reproducing device. FIG. 4 is a cross-sectional view of a conventional galvanometer mirror. 1... Light source, 2... Condensing lens, 3... Beam shape conversion optical system, 4... Beam splitter, 5...
... Tracking mirror, 6 ... Tangential mirror, 7 ... Objective lens drive device, 8 ... Objective lens, 9 ... Disk, 10 ... Information track, 11 ... Cylindrical lens, 12 ... Photodetector , 21... Mirror, 22... Magnet, 23...
Rubber, 24...Mounting metal fittings, 25...Coil,
31...Laminated piezoelectric element, 32...Fixing part, 33
...Mirror support plate.
Claims (1)
録再生する光学式記録再生装置において、前記記
録媒体上の情報トラツクを追跡するために前記光
線を前記記録媒体の半径方向へ振るトラツキング
ミラーと、再生信号の時間変動を取り除くため前
記光線を前記情報トラツクの接線方向へ振るタン
ジエンシヤルミラーの駆動に積層型圧電素子を用
いることを特徴とするガルバノミラー駆動機構。 (2) 前記積層型圧電素子複数個を前記ガルバノ
ミラー裏面の両端付近にそれぞれ固着し、前記積
層型圧電素子をＰｕｓｈ−Ｐｕｌｌ方式で駆動す
ることにより、前記ガルバノミラーをその中点を
中心として回転させることを特徴とする実用新案
登録請求の範囲第１項記載のガルバノミラー駆動
機構。 (3) 前記ガルバノミラーの裏面に、切り欠き状
の支点と力点を有する金属板を固着し、前記支点
を固定部に、前記積層型圧電素子を前記力点にそ
れぞれ固着した構造において、前記積層型圧電素
子を伸縮駆動させることにより、前記支点回りに
前記ガルバノミラーを回転させることを特徴とす
を実用新案登録請求の範囲第１項記載のガルバノ
ミラー駆動機構。[Claims for Utility Model Registration] (1) In an optical recording and reproducing device that records and reproduces information by irradiating a light beam onto a disc-shaped recording medium, the light beam is irradiated onto a disc-shaped recording medium to track an information track on the recording medium. A galvanometer characterized in that a laminated piezoelectric element is used to drive a tracking mirror that swings in the radial direction of the recording medium and a tangential mirror that swings the light beam in the tangential direction of the information track in order to remove time fluctuations of the reproduced signal. Mirror drive mechanism. (2) A plurality of the laminated piezoelectric elements are each fixed near both ends of the back surface of the galvano mirror, and the laminated piezoelectric elements are driven by a push-pull method to rotate the galvano mirror about its midpoint. The galvanometer mirror drive mechanism according to claim 1, which is characterized in that: (3) A structure in which a metal plate having a cutout-shaped fulcrum and a force point is fixed to the back surface of the galvano mirror, the fulcrum is fixed to a fixing part, and the laminated piezoelectric element is fixed to the force point, respectively. 2. The galvanomirror drive mechanism according to claim 1, wherein the galvanomirror is rotated about the fulcrum by driving a piezoelectric element to expand and contract.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14222685U JPS6251313U (en) | 1985-09-18 | 1985-09-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14222685U JPS6251313U (en) | 1985-09-18 | 1985-09-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6251313U true JPS6251313U (en) | 1987-03-30 |
Family
ID=31050750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14222685U Pending JPS6251313U (en) | 1985-09-18 | 1985-09-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6251313U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55151614A (en) * | 1979-05-17 | 1980-11-26 | Nippon Telegr & Teleph Corp <Ntt> | Laser beam deflecting device |
| JPS56165937A (en) * | 1980-05-23 | 1981-12-19 | Matsushita Electric Ind Co Ltd | Optical recorder and reproducer |
-
1985
- 1985-09-18 JP JP14222685U patent/JPS6251313U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55151614A (en) * | 1979-05-17 | 1980-11-26 | Nippon Telegr & Teleph Corp <Ntt> | Laser beam deflecting device |
| JPS56165937A (en) * | 1980-05-23 | 1981-12-19 | Matsushita Electric Ind Co Ltd | Optical recorder and reproducer |
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