JPS5974529U - Objective lens holding mechanism of focus drive device - Google Patents
Objective lens holding mechanism of focus drive deviceInfo
- Publication number
- JPS5974529U JPS5974529U JP16870682U JP16870682U JPS5974529U JP S5974529 U JPS5974529 U JP S5974529U JP 16870682 U JP16870682 U JP 16870682U JP 16870682 U JP16870682 U JP 16870682U JP S5974529 U JPS5974529 U JP S5974529U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- drive device
- holding mechanism
- focus drive
- lens barrel
- 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、第２図は従来のフォーカス駆動装置を示した断
面図、第３図はこの考案に係る対物レンズ保持機構を備
えるフォーカス駆動装置の断面図である。
１・・・第１のヨーク、２・・・第２のヨーク、３・・
・筒状部、３ａ・・・孔、４・・・永久磁石、５・・・
対物レンズ筒、６・・・コイルボビン、７・・・コイル
、１１・・・フランジ（係止部）、１２・・・凹部。1 and 2 are sectional views showing a conventional focus drive device, and FIG. 3 is a sectional view of a focus drive device equipped with an objective lens holding mechanism according to this invention. 1...first yoke, 2...second yoke, 3...
・Cylindrical part, 3a...hole, 4...permanent magnet, 5...
Objective lens barrel, 6... Coil bobbin, 7... Coil, 11... Flange (locking part), 12... Recessed part.
Claims (1)
間怠に挿入された第２のヨークとを、永久磁石を介して
一体に結合すると共に、対物レンズが装着された対物レ
ンズ筒を前記筒状部内に挿入し、該対物レンズ筒の一端
部に前記両ヨーク間に配設したコイルボビンを固定して
、該コイルボビンのコイルに通電するたとにより前記対
物レンズ筒を軸線方向に筒状部内で変位させるようにし
たフォーカス駆動装置の対物レンズ保持機構において、 前記対物レンズ筒が前記筒状部から抜けるのを防止させ
る係止部を前記対物レンズ筒の他端部に設けたことを特
徴とするフォーカス駆動装置の対物レンズ保持機構。[Claims for Utility Model Registration] An annular first yoke and a second yoke in which a cylindrical part is inserted inadvertently into the first yoke are integrally connected via a permanent magnet, and , by inserting an objective lens barrel equipped with an objective lens into the cylindrical part, fixing a coil bobbin disposed between the two yokes to one end of the objective lens barrel, and energizing the coil of the coil bobbin. In the objective lens holding mechanism of the focus drive device, which displaces the objective lens barrel in the axial direction within the cylindrical part, a locking part that prevents the objective lens barrel from coming off from the cylindrical part is attached to the objective lens barrel. An objective lens holding mechanism of a focus drive device, characterized in that it is provided at the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16870682U JPS5974529U (en) | 1982-11-09 | 1982-11-09 | Objective lens holding mechanism of focus drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16870682U JPS5974529U (en) | 1982-11-09 | 1982-11-09 | Objective lens holding mechanism of focus drive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5974529U true JPS5974529U (en) | 1984-05-21 |
Family
ID=30368758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16870682U Pending JPS5974529U (en) | 1982-11-09 | 1982-11-09 | Objective lens holding mechanism of focus drive device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5974529U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5062404A (en) * | 1973-10-02 | 1975-05-28 |
-
1982
- 1982-11-09 JP JP16870682U patent/JPS5974529U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5062404A (en) * | 1973-10-02 | 1975-05-28 |
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