JPS6137135U - Optical pickup noise prevention device - Google Patents
Optical pickup noise prevention deviceInfo
- Publication number
- JPS6137135U JPS6137135U JP12337484U JP12337484U JPS6137135U JP S6137135 U JPS6137135 U JP S6137135U JP 12337484 U JP12337484 U JP 12337484U JP 12337484 U JP12337484 U JP 12337484U JP S6137135 U JPS6137135 U JP S6137135U
- Authority
- JP
- Japan
- Prior art keywords
- optical pickup
- prevention device
- coil
- noise prevention
- yoke
- 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)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図と第２図は本考案の実施例を示すものであり、第
１図は光学式ピックアップの主要部を示す斜視図、第２
図はコイルの正面図、第３図は従来の光学式ピックアッ
プを示す正面図、第４図はアコースティックノイズの発
生原理を示す原理説明図、第５図は従来の光学式ピック
アップにおけるノイズのレベルを音の周波数との関連で
示す線図、第６図は本考案の光学式ピックアップにおけ
るノイズのレベルを音の周波数との関連で示す線図であ
る。
１０・・・・・・光ディスク、１１・・・・・・ベース
、１２，１４・・・・・・対物レンズを支持している板
ばね、１８・・・・・・筒状のコイル、２１・・・・・
・ヨーク、２１ａ・・・・・・コイル内に位置している
部分、２ｌｂ・・・・・・コイル外に位置している部分
。1 and 2 show an embodiment of the present invention, with FIG. 1 being a perspective view showing the main parts of the optical pickup, and FIG.
The figure is a front view of the coil, Figure 3 is a front view of a conventional optical pickup, Figure 4 is an explanatory diagram showing the principle of acoustic noise generation, and Figure 5 is a diagram showing the noise level in a conventional optical pickup. FIG. 6 is a diagram showing the noise level in the optical pickup of the present invention in relation to the frequency of sound. DESCRIPTION OF SYMBOLS 10... Optical disk, 11... Base, 12, 14... Leaf spring supporting objective lens, 18... Cylindrical coil, 21・・・・・・
- Yoke, 21a... part located inside the coil, 2lb... part located outside the coil.
Claims (2)
のコイルの内外に延びてコイルの一部を挾む形状のヨー
クと、このヨークに保持されてコイルに対向するマグネ
ットとが設けられている光学式ピックアップにおいて、
前記ヨークを支持しているベースが、多孔質の焼結金属
によって形成されていることを特徴とする光学式ピック
アップのノイズ防止装置。(1) A cylindrical coil that corrects the objective lens, a yoke that extends inside and outside of this coil to sandwich a part of the coil, and a magnet that is held by this yoke and faces the coil. In the optical pickup,
A noise prevention device for an optical pickup, wherein a base supporting the yoke is made of porous sintered metal.
形成された金属短繊維を加圧焼結したものである実用新
案登録請求の範囲第１項記載の光学式ピックアップのノ
イズ防止装置。(2) The noise prevention device for an optical pickup according to claim 1, wherein the porous sintered metal is obtained by press-sintering short metal fibers formed by a chatter vibration cutting method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12337484U JPS6137135U (en) | 1984-08-11 | 1984-08-11 | Optical pickup noise prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12337484U JPS6137135U (en) | 1984-08-11 | 1984-08-11 | Optical pickup noise prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6137135U true JPS6137135U (en) | 1986-03-07 |
Family
ID=30682120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12337484U Pending JPS6137135U (en) | 1984-08-11 | 1984-08-11 | Optical pickup noise prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6137135U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS595444A (en) * | 1982-06-17 | 1984-01-12 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | Optical apparatus |
| JPS5936032B2 (en) * | 1981-02-19 | 1984-08-31 | 第一工業製薬株式会社 | Method for producing a water-based dispersion flame retardant for synthetic fiber materials |
-
1984
- 1984-08-11 JP JP12337484U patent/JPS6137135U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5936032B2 (en) * | 1981-02-19 | 1984-08-31 | 第一工業製薬株式会社 | Method for producing a water-based dispersion flame retardant for synthetic fiber materials |
| JPS595444A (en) * | 1982-06-17 | 1984-01-12 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | Optical apparatus |
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