JPS6239220U - - Google Patents
Info
- Publication number
- JPS6239220U JPS6239220U JP13064285U JP13064285U JPS6239220U JP S6239220 U JPS6239220 U JP S6239220U JP 13064285 U JP13064285 U JP 13064285U JP 13064285 U JP13064285 U JP 13064285U JP S6239220 U JPS6239220 U JP S6239220U
- Authority
- JP
- Japan
- Prior art keywords
- optical information
- actuator
- objective lens
- information signal
- reproducing device
- 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 7
- 230000004907 flux Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案の光学的情報信号再生装置のア
クチユエータの縦断側面図、第２図は本考案の光
学的情報信号再生装置のアクチユエータの分解斜
視図、第３図はハネカムコイルの展開図、第４図
はトラツキング制御用のコイルとして用いられる
ハネカムコイルの動作説明図、第５図は従来の光
学的情報信号再生装置のアクチユエータの一例の
縦断側面図、第６図は同上分解斜視図である。
１……対物レンズの保持体、１ａ……円筒状部
、１ｂ……軸支部、１ｃ……孔、２ａ〜２ｃ……
トラツキング制御用のコイル、３……絶縁紙、４
……環状のコイル、５……対物レンズ、６……環
状のヨーク、６ａ……環状のヨーク６の突起部、
７……永久磁石、８……ヨーク、８ａ……ヨーク
の基体部、８ｂ……軸、８ｃ……突起部、８ｄ…
…透孔、ｍｓ，ｍｓ１，ｍｓ２……磁気空隙、１
２……ハネカムコイル。
FIG. 1 is a longitudinal sectional side view of the actuator of the optical information signal reproducing device of the present invention, FIG. 2 is an exploded perspective view of the actuator of the optical information signal reproducing device of the present invention, and FIG. 3 is a developed view of the honeycomb coil. FIG. 4 is an explanatory diagram of the operation of a honeycomb coil used as a tracking control coil, FIG. 5 is a longitudinal sectional side view of an example of an actuator of a conventional optical information signal reproducing device, and FIG. 6 is an exploded perspective view of the same. 1... Objective lens holder, 1a... Cylindrical part, 1b... Pivotal support, 1c... Hole, 2a to 2c...
Coil for tracking control, 3...Insulating paper, 4
...Annular coil, 5...Objective lens, 6...Annular yoke, 6a...Protrusion of annular yoke 6,
7...Permanent magnet, 8...Yoke, 8a...Yoke base, 8b...Shaft, 8c...Protrusion, 8d...
...Through hole, ms, ms1, ms2...Magnetic gap, 1
2...Honeycomb coil.
Claims (1)
投射し、光学的情報記録媒体に記録されている情
報信号を読取るようになされている光学的情報信
号再生装置のアクチユエータであつて、対物レン
ズが固着されるべき対物レンズ保持体におけるそ
れの中心軸に平行な外周面に筒状のハネカムコイ
ルを巻回し、また、前記のハネカムコイルの総巻
回数の１／２の部分に設けた中間端子に対して前
後の各巻線部分が互に交叉して形成された菱形部
分に磁束が略々直交した状態で鎖交するように永
久磁石と磁路とによつて構成した磁気回路を備え
、前記したハネカムコイルの両端と中間端子との
間に電流が流されたときに、対物レンズの保持体
がそれの中心軸を回動中心にして回動できるよう
にしてなる光学的情報信号再生装置のアクチユエ
ータ。 An actuator for an optical information signal reproducing device that projects a light spot with a minute diameter onto an optical information recording medium and reads an information signal recorded on the optical information recording medium, the actuator having an objective lens. A cylindrical honeycomb coil is wound around the outer peripheral surface parallel to the central axis of the objective lens holder to be fixed, and an intermediate terminal is provided at 1/2 of the total number of turns of the honeycomb coil. The honeycomb coil described above is equipped with a magnetic circuit constituted by a permanent magnet and a magnetic path so that the magnetic flux intersects with the diamond-shaped part formed by intersecting each other in the front and rear winding parts in a substantially orthogonal state. An actuator for an optical information signal reproducing device, which allows an objective lens holder to rotate about its central axis when a current is passed between both ends and an intermediate terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13064285U JPS6239220U (en) | 1985-08-27 | 1985-08-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13064285U JPS6239220U (en) | 1985-08-27 | 1985-08-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6239220U true JPS6239220U (en) | 1987-03-09 |
Family
ID=31028335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13064285U Pending JPS6239220U (en) | 1985-08-27 | 1985-08-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6239220U (en) |
-
1985
- 1985-08-27 JP JP13064285U patent/JPS6239220U/ja active Pending
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