JPS61163333U - - Google Patents
Info
- Publication number
- JPS61163333U JPS61163333U JP4582685U JP4582685U JPS61163333U JP S61163333 U JPS61163333 U JP S61163333U JP 4582685 U JP4582685 U JP 4582685U JP 4582685 U JP4582685 U JP 4582685U JP S61163333 U JPS61163333 U JP S61163333U
- Authority
- JP
- Japan
- Prior art keywords
- control coil
- gap
- arc
- tracking control
- focus control
- 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 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案の一実施例を示す斜視図、第２
図は同実施例の要部の斜視図、第３図は第２図の
横断面図、第４，５図は他の実施例の要部の横断
面図、第６図は従来装置の斜視図である。
２１ａ，２１ｂ……内ヨーク、２２ａ，２２ｂ
……外ヨーク、２３……間隙、２４ａ，２４ｂ…
…マグネツト、２８……集束レンズ、２９……保
持体、３３……トラツキング制御用コイル、３４
……フオーカス制御用コイル。
Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a perspective view of the main part of the same embodiment, Fig. 3 is a cross-sectional view of Fig. 2, Figs. 4 and 5 are cross-sectional views of the main part of other embodiments, and Fig. 6 is a perspective view of the conventional device. It is a diagram. 21a, 21b...inner yoke, 22a, 22b
...Outer yoke, 23...Gap, 24a, 24b...
... Magnet, 28 ... Focusing lens, 29 ... Holder, 33 ... Tracking control coil, 34
...Focus control coil.
Claims (1)
ネツトにより形成される間隙に、前記保持体の側
面に設けたフオーカス制御用コイルとトラツキン
グ制御コイルとを配した光学ヘツドにおいて、前
記ヨークとマグネツトを円弧状に形成して円弧状
の間隙を形成し、少なくとも前記間隙の円弧端部
に位置するフオーカス制御用コイルとトラツキン
グ制御用コイルとを前記保持体の側面方向に並設
したことを特徴とする光学ヘツド。 In an optical head, the focusing lens is held by a holding plate, and a focus control coil and a tracking control coil provided on the side surface of the holding body are arranged in the gap formed by the yoke and the magnet. An optical system characterized in that an arc-shaped gap is formed, and a focus control coil and a tracking control coil located at least at the arc ends of the gap are arranged side by side in the side direction of the holder. Head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4582685U JPS61163333U (en) | 1985-03-28 | 1985-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4582685U JPS61163333U (en) | 1985-03-28 | 1985-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61163333U true JPS61163333U (en) | 1986-10-09 |
Family
ID=30559661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4582685U Pending JPS61163333U (en) | 1985-03-28 | 1985-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61163333U (en) |
-
1985
- 1985-03-28 JP JP4582685U patent/JPS61163333U/ja active Pending