JPH0193617U - - Google Patents
Info
- Publication number
- JPH0193617U JPH0193617U JP18889187U JP18889187U JPH0193617U JP H0193617 U JPH0193617 U JP H0193617U JP 18889187 U JP18889187 U JP 18889187U JP 18889187 U JP18889187 U JP 18889187U JP H0193617 U JPH0193617 U JP H0193617U
- Authority
- JP
- Japan
- Prior art keywords
- disk
- objective lens
- magnetic
- drive device
- lens drive
- 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)
- Optical Head (AREA)
Description
第１図は本考案の一実施例のコンパクトデイス
クプレーヤのピツクアツプ部とスピンドルモータ
の位置関係の側面図、第２図は上面図である。
１……ピツクアツプレンズ、２……トラツキン
グサーボ用永久磁石、３……トラツキングアクチ
ユエータコイル、４……磁気シールド材使用ケー
ス、５……スピンドルモータロータマグネツト、
６……デイスク、７……スピンドルモータコイル
、８……チヤツク。
FIG. 1 is a side view of the positional relationship between a pickup section and a spindle motor of a compact disc player according to an embodiment of the present invention, and FIG. 2 is a top view. 1... Pick up lens, 2... Permanent magnet for tracking servo, 3... Tracking actuator coil, 4... Case using magnetic shielding material, 5... Spindle motor rotor magnet,
6...disk, 7...spindle motor coil, 8...chuck.
Claims (1)
ンズを介して集束したレーザー光を照射し、その
反射光の強弱を利用して該信号を読み取る円盤型
デイスク装置において、該対物レンズが記録信号
溝に沿つて、レーザー光照射するように設けられ
た電気磁気力を利用した対物レンズ駆動装置に外
部からの磁力線が、前記対物レンズ駆動装置を構
成する磁気回路におよぼす影響を低減またはなく
すように磁性材料を使用したカバーを取り付けた
ことを特徴とする磁気シールド装置。 In a disk-shaped disk device, a signal groove recorded on a disk-shaped disk is irradiated with a focused laser beam through an objective lens, and the signal is read using the strength or weakness of the reflected light. The objective lens drive device using electromagnetic force, which is provided to irradiate laser light, is provided with a magnetic field so as to reduce or eliminate the influence of external magnetic lines of force on the magnetic circuit constituting the objective lens drive device. A magnetic shielding device characterized by having a cover made of material attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18889187U JPH0193617U (en) | 1987-12-14 | 1987-12-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18889187U JPH0193617U (en) | 1987-12-14 | 1987-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0193617U true JPH0193617U (en) | 1989-06-20 |
Family
ID=31479955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18889187U Pending JPH0193617U (en) | 1987-12-14 | 1987-12-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0193617U (en) |
-
1987
- 1987-12-14 JP JP18889187U patent/JPH0193617U/ja active Pending
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