JPS58165737U - Objective lens drive device - Google Patents
Objective lens drive deviceInfo
- Publication number
- JPS58165737U JPS58165737U JP6125882U JP6125882U JPS58165737U JP S58165737 U JPS58165737 U JP S58165737U JP 6125882 U JP6125882 U JP 6125882U JP 6125882 U JP6125882 U JP 6125882U JP S58165737 U JPS58165737 U JP S58165737U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- driving device
- lens driving
- drive device
- 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
メ 第１図は、本考案の実施例の二次元対物レンズ
） 駆動装置を展開して示した構造図、第２図は部分
彰 的に断面にした斜婢透視図、第３図は本考案によ
七 る実施例の磁気回路を示す構造図、第４図と第５
ｄ 図は従来と本考案の実施例の磁気回路の磁界分布
九 を比較したものである。
２・・・・・・基台、３・・・・・・ヨークプレート、
４・・・・・・磁石、６・・・・・・磁気空隙、１０・
・・・・・対物レンズ、１．２； ・・・・・・フォ
ーカシングコイル、１３・・・・・・トラッキン写
グコイル。Fig. 1 is an exploded structural diagram of a two-dimensional objective lens according to an embodiment of the present invention, Fig. 2 is an oblique perspective view partially cut away, and Fig. 3 is a structural diagram showing the drive device of an embodiment of the present invention. Fig. 4 and Fig. 5 are structural diagrams showing the magnetic circuit of the embodiment according to the present invention.
Figure d compares the magnetic field distributions of the conventional magnetic circuit and the embodiment of the present invention. 2...Base, 3...Yoke plate,
4...Magnet, 6...Magnetic gap, 10.
...Objective lens, 1.2; ...Focusing coil, 13...Tracking photograph
Gcoil.
Claims (1)
対物レンズの焦点位置を制御するためσ対物レンズ駆動
装置において、厚み方向に着ａされ光軸方向に長い角形
の磁石を囲むヨークるもつ磁気回路番光軸に関して対称
にかつ同極ｒ・専が対向するように配置し、第１、第２
の磁多回路の磁気空隙に同時にコイルを配設したこさを
特徴とする対物レンズ駆動装置。 ２ 前記ヨークが異形引抜き、粉末焼結合金にＪす、１
体で実現した実用新案登録請求の範囲群１項記載の対物
レンズ駆動装置。 ′[Claims for Utility Model Registration] 1. Reading information optically recorded on a recording medium, 2.
In order to control the focal position of the objective lens, in the σ objective lens driving device, a magnetic circuit having a yoke that is attached in the thickness direction and surrounds a rectangular magnet that is long in the optical axis direction is symmetrical with respect to the optical axis and has the same polarity r. The first and second
An objective lens driving device characterized by having coils arranged simultaneously in the magnetic gap of a magnetic multi-circuit. 2 The yoke is drawn into an irregular shape and made of powdered sintered alloy, 1
An objective lens driving device according to claim group 1 of the utility model registration claim, which is realized by a body. ′
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6125882U JPS58165737U (en) | 1982-04-28 | 1982-04-28 | Objective lens drive device |
| US06/488,452 US4568142A (en) | 1982-04-26 | 1983-04-25 | Objective lens drive apparatus |
| DE8383104069T DE3375706D1 (en) | 1982-04-26 | 1983-04-26 | Objective lens drive apparatus |
| EP83104069A EP0092842B1 (en) | 1982-04-26 | 1983-04-26 | Objective lens drive apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6125882U JPS58165737U (en) | 1982-04-28 | 1982-04-28 | Objective lens drive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58165737U true JPS58165737U (en) | 1983-11-04 |
Family
ID=30071464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6125882U Pending JPS58165737U (en) | 1982-04-26 | 1982-04-28 | Objective lens drive device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58165737U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS542400A (en) * | 1977-06-09 | 1979-01-09 | Kyupi Kk | Vinegar making method |
| JPS5634153A (en) * | 1979-08-29 | 1981-04-06 | Nippon Telegr & Teleph Corp <Ntt> | Automatic focus adjuster |
-
1982
- 1982-04-28 JP JP6125882U patent/JPS58165737U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS542400A (en) * | 1977-06-09 | 1979-01-09 | Kyupi Kk | Vinegar making method |
| JPS5634153A (en) * | 1979-08-29 | 1981-04-06 | Nippon Telegr & Teleph Corp <Ntt> | Automatic focus adjuster |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS58165737U (en) | Objective lens drive device | |
| JPS6044225U (en) | Optical pickup device | |
| JPS58165738U (en) | Objective lens drive device | |
| JPS6010430A (en) | Object lens driving device | |
| JPS5920438U (en) | Optical system drive device in optical information reading device | |
| JPS5862448U (en) | 2D drive device | |
| JPS60142825U (en) | Optical pickup objective lens drive device | |
| JPS58183640U (en) | optical pickup device | |
| JPS5942536U (en) | optical reproduction device | |
| JPS5936030U (en) | Objective lens drive device | |
| JPS5963827U (en) | Objective lens drive device | |
| JPS6020027U (en) | Optical pickup correction drive device | |
| JPS5897731U (en) | Drive unit of optical information reading device | |
| JPS6012824U (en) | Optical pickup actuator | |
| JPS5966926U (en) | Optical pickup tracking drive | |
| JPS58159647U (en) | optical pickup device | |
| JPS59125728U (en) | magneto-optical recording device | |
| JPS582731U (en) | optical information reader | |
| JPS60173124U (en) | lens drive device | |
| JPS58173034U (en) | Condensing lens drive device | |
| JPS5817628U (en) | Objective lens drive control device in optical disk player | |
| JPS58159642U (en) | autofocus device | |
| JPS58170029U (en) | optical pickup device | |
| JPS5852645U (en) | Objective lens drive device | |
| JPS5917042U (en) | optical scanning device |