JPH0337609U - - Google Patents
Info
- Publication number
- JPH0337609U JPH0337609U JP9603289U JP9603289U JPH0337609U JP H0337609 U JPH0337609 U JP H0337609U JP 9603289 U JP9603289 U JP 9603289U JP 9603289 U JP9603289 U JP 9603289U JP H0337609 U JPH0337609 U JP H0337609U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- magnetic circuit
- coil
- sliding base
- tracking
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims 2
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
第１図は本考案の対物レンズ駆動装置の機能を
説明する斜視図である。第２図は本考案の対物レ
ンズ駆動装置の実施例の一部切欠斜視図である。
第３図は従来の対物レンズ駆動装置の一部切欠斜
視図である。
１……対物レンズ、２……光学ベース、３ａ，
３ｂ，５……永久磁石、４ａ，４ｂ……第１の磁
気回路、６……第２の磁気回路、７……フオーカ
ス摺動ベース、８ａ，８ｂ……平行ガイド、９ａ
，９ｂ……スライド軸受、１０ａ，１０ｂ……第
１のコイル、１１……ヒンジ、１２……トラツキ
ングアーム、１３……第２のコイル、１４ａ，１
４ｂ……トラツキング用クラツシユストツパー、
１５……４５°ミラー。
FIG. 1 is a perspective view illustrating the functions of the objective lens driving device of the present invention. FIG. 2 is a partially cutaway perspective view of an embodiment of the objective lens driving device of the present invention.
FIG. 3 is a partially cutaway perspective view of a conventional objective lens driving device. 1...Objective lens, 2...Optical base, 3a,
3b, 5... Permanent magnet, 4a, 4b... First magnetic circuit, 6... Second magnetic circuit, 7... Focus sliding base, 8a, 8b... Parallel guide, 9a
, 9b...Slide bearing, 10a, 10b...First coil, 11...Hinge, 12...Tracking arm, 13...Second coil, 14a, 1
4b...Tracking crash stopper,
15...45° mirror.
Claims (1)
トラツクに追従させるための対物レンズ駆動装置
において、 第１の磁気回路と第２の磁気回路を有し且つ平
行ガイドが設けられている光学ベースと、該光学
ベースの平行ガイドに摺動自在に装着され且つト
ラツキング用クラツシユストツパーが設けられて
いると共に前記第１の磁気回路の磁束と鎖交して
対物レンズを光軸方向に駆動する第１のコイルを
有するフオーカス摺動ベースと、該フオーカス摺
動ベースの中央にヒンジを介して回動自在に装着
され且つ一端に対物レンズを有し他端に前記第２
の磁気回路の磁束と鎖交して対物レンズを光軸と
直角方向に駆動する第２のコイルを有するトラツ
キングアームを備え、前記フオーカス摺動ベース
に設けられたトラツキング用クラツシユストツパ
ーにより前記トラツキングアームが所定幅以上振
動しないように規制した対物レンズ駆動装置。[Claims for Utility Model Registration] An objective lens driving device for causing a light beam to follow an information track on a recording medium as a light spot, which has a first magnetic circuit and a second magnetic circuit, and is provided with a parallel guide. an optical base, which is slidably attached to a parallel guide of the optical base, and is provided with a tracking crush stopper, which interlinks with the magnetic flux of the first magnetic circuit to cause the objective lens to emit light. a focus sliding base having a first coil driven in the axial direction; a focus sliding base rotatably attached to the center of the focus sliding base via a hinge; an objective lens at one end; and a second coil at the other end.
a tracking arm having a second coil that interlinks with the magnetic flux of the magnetic circuit to drive the objective lens in a direction perpendicular to the optical axis; An objective lens drive device that prevents the tracking arm from vibrating beyond a predetermined width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9603289U JPH0643851Y2 (en) | 1989-08-18 | 1989-08-18 | Objective lens drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9603289U JPH0643851Y2 (en) | 1989-08-18 | 1989-08-18 | Objective lens drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0337609U true JPH0337609U (en) | 1991-04-11 |
| JPH0643851Y2 JPH0643851Y2 (en) | 1994-11-14 |
Family
ID=31645259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9603289U Expired - Fee Related JPH0643851Y2 (en) | 1989-08-18 | 1989-08-18 | Objective lens drive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0643851Y2 (en) |
-
1989
- 1989-08-18 JP JP9603289U patent/JPH0643851Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0643851Y2 (en) | 1994-11-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |