JPH0718015Y2 - Imaging element drive - Google Patents

Imaging element drive

Info

Publication number
JPH0718015Y2
JPH0718015Y2 JP1986138101U JP13810186U JPH0718015Y2 JP H0718015 Y2 JPH0718015 Y2 JP H0718015Y2 JP 1986138101 U JP1986138101 U JP 1986138101U JP 13810186 U JP13810186 U JP 13810186U JP H0718015 Y2 JPH0718015 Y2 JP H0718015Y2
Authority
JP
Japan
Prior art keywords
yoke
permanent magnet
support shaft
annular permanent
coil
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.)
Expired - Lifetime
Application number
JP1986138101U
Other languages
Japanese (ja)
Other versions
JPS6344221U (en
Inventor
昭 橋本
茂一 阪部
健治朗 木目
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1986138101U priority Critical patent/JPH0718015Y2/en
Publication of JPS6344221U publication Critical patent/JPS6344221U/ja
Application granted granted Critical
Publication of JPH0718015Y2 publication Critical patent/JPH0718015Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【考案の詳細な説明】 [産業上の利用分野] 本考案は光学式ディスク等の情報記録媒体表面に集光さ
れる光スポットのトラックずれ及び焦点ずれを制御する
結像素子駆動装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an imaging element driving device for controlling track deviation and focus deviation of a light spot focused on the surface of an information recording medium such as an optical disk. is there.

[従来の技術] 第6図及び第7図は、従来の対物レンズ等の結像素子の
駆動装置を示すものであり、(1)は光源としての半導
体レーザ、(2)は回折格子ホルダ、(3)は回折格子
ホルダ(2)を一方向に押すコイル状バネ、(4)は回
折格子ホルダ(2)とコイル状バネ(3)との間に介在
し、回折格子ホルダ(2)の調整をスムーズならしめる
スライダ、(5)はハーフミラー、(6)は反射ミラ
ー、(7)は結像素子である対物レンズ、(8)は凹形
状をしたセンサーレンズ、(9)はセンサーレンズ
(8)を収納するセンサーレンズホルダ、(10)は光検
知器、(11)は光検知器(10)を保持する検知器基板、
(12)は上記(1)〜(11)等を収納保持するヘッドベ
ース、(13)は円筒状の軸受部(14)を中心付近に備
え、軸受部(14)より所定距離偏心した位置に対物レン
ズ(7)を固定的に保持しているドラム状の可動ホル
ダ、(15)は可動ホルダ(13)の外周部に巻装された焦
点制御用コイル、(16a),(16b),(16c),(16d)
は焦点制御用コイル(15)上に固定的に貼り付けられた
矩形状のトラック制御用コイル、(17)はコイルホルダ
(13)に設けられたアパーチャ(開口)、(18)はヘッ
ドベース(12)に設けられた支軸穴(19)に固定的に立
設され、軸受部(14)が軸受部(14)の軸線方向に摺動
自在にかつ回動自在に嵌着された支軸である。
[Prior Art] FIGS. 6 and 7 show a conventional apparatus for driving an imaging element such as an objective lens. (1) is a semiconductor laser as a light source, (2) is a diffraction grating holder, and FIG. (3) is a coil-shaped spring that pushes the diffraction grating holder (2) in one direction, and (4) is interposed between the diffraction grating holder (2) and the coil-shaped spring (3), A slider for smoothing the adjustment, (5) a half mirror, (6) a reflection mirror, (7) an objective lens which is an imaging element, (8) a concave sensor lens, and (9) a sensor lens. (8) sensor lens holder, (10) photodetector, (11) photodetector substrate holding photodetector (10),
(12) is a head base for accommodating and holding the above (1) to (11), (13) is provided with a cylindrical bearing portion (14) near the center, and is eccentric to the bearing portion (14) by a predetermined distance. A drum-shaped movable holder that fixedly holds the objective lens (7), (15) a focus control coil wound around the outer periphery of the movable holder (13), (16a), (16b), ( 16c), (16d)
Is a rectangular track control coil fixedly attached on the focus control coil (15), (17) is an aperture (opening) provided in the coil holder (13), and (18) is a head base ( A support shaft fixedly erected in a support shaft hole (19) provided in (12) and fitted with a bearing portion (14) slidably and rotatably in the axial direction of the bearing portion (14). Is.

また、(20a),(20b)はコイルホルダ(13)の外周側
に近接し、互いに同一磁極面が対向してヘッドベース
(12)上に固定されている永久磁石、(21a),(21b)
は永久磁石(20a),(20b)の背面に設けられたバック
ヨーク、(22)は可動ホルダ(13)とヘッドベース(1
2)を連結し、可動ホルダ(13)を弾性的に支持するダ
ンパー、(23)はダンパー(22)を可動ホルダ(13)に
固定するめのピン、(24a),(24b)はダンパー(22)
をヘッドベース(12)に固定するための固定ピン、(2
5)は可動ホルダ(13)の上面に固定的に設けられたタ
ーミナル基板、(26a),(26b),(26c),(26d)は
焦点制御用コイル(15)及びトラック制御用コイル(16
a),(16b),(16c),(16d)のコイル線で、ターミ
ナル基板(25)上にハンダ付けされている。(27)はタ
ーミナル基板(25)からヘッドベース(12)に設けられ
ているベース基板(28)へ中継するためのリード線、
(29)はリード線(27)を通すためのリード穴、(30)
はアクチュエータカバーである。
Further, (20a) and (20b) are permanent magnets (21a) and (21b) that are close to the outer peripheral side of the coil holder (13) and are fixed on the head base (12) with their magnetic pole surfaces facing each other. )
Is a back yoke provided on the back surface of the permanent magnets (20a) and (20b), and (22) is the movable holder (13) and the head base (1).
2) is a damper for elastically supporting the movable holder (13), (23) is a pin for fixing the damper (22) to the movable holder (13), and (24a) and (24b) are dampers (22). )
Fixing pin for fixing the to the head base (12), (2
5) is a terminal board fixedly provided on the upper surface of the movable holder (13), and (26a), (26b), (26c) and (26d) are focus control coils (15) and track control coils (16).
The coil wires a), (16b), (16c), and (16d) are soldered on the terminal board (25). (27) is a lead wire for relaying from the terminal board (25) to the base board (28) provided on the head base (12),
(29) is a lead hole for passing the lead wire (27), (30)
Is an actuator cover.

次に、この従来例の動作について説明する。半導体レー
ザ(1)から出射された図示せぬレーザビームは、回折
格子ホルダ(2)に収納されている図示せぬ回折格子に
より複数の光ビームに回折分離される。回折された光ビ
ームのうち、少なくとも0次光と±1次光は、ハーフミ
ラー(5)により反射され、次に反射ミラー(6)によ
り反射されて対物レンズ(7)に入射し、光ディスク記
録媒体上の図示せぬデータトラック上に集光し、光スポ
ットを形成する。光ディスク記録媒体表面で反射された
光ビームは、上記光路を逆行して対物レンズ(7)、反
射ミラー(6)、を通りハーフミラー(5)を透過し、
センサーレンズ(8)を経て光検知器(10)により受光
される。光検知器(10)では、光ディスク記録媒体上の
情報を検出すると同時に光ディスク記録媒体上に集光さ
れた光スポットの焦点位置ずれと、データトラックと光
スポットとのトラックずれ量とを検出し、それぞれのず
れ量に応じた制御電流を焦点制御用コイル(15)及びト
ラック制御用コイル(16a),(16b),(16c),(16
d)に流すことにより、対物レンズ(7)を矢印A方向
に摺動あるいは矢印B方向に回動させる。
Next, the operation of this conventional example will be described. A laser beam (not shown) emitted from the semiconductor laser (1) is diffracted and separated into a plurality of light beams by a diffraction grating (not shown) housed in the diffraction grating holder (2). Of the diffracted light beam, at least the 0th order light and the ± 1st order light are reflected by the half mirror (5), then by the reflection mirror (6), and enter the objective lens (7) to record the optical disk. A light spot is formed by focusing on a data track (not shown) on the medium. The light beam reflected on the surface of the optical disc recording medium goes backward in the above optical path, passes through the objective lens (7), the reflection mirror (6), and passes through the half mirror (5).
The light is received by the photodetector (10) through the sensor lens (8). The optical detector (10) detects the information on the optical disc recording medium and, at the same time, detects the focal position shift of the light spot focused on the optical disc recording medium and the track shift amount between the data track and the optical spot. Focus control coils (15) and track control coils (16a), (16b), (16c), (16)
The objective lens (7) is slid in the direction of arrow A or rotated in the direction of arrow B by flowing in d).

[考案が解決しようとする問題点] 以上のように、従来の結像素子駆動装置は、焦点制御用
コイル(15)及びトラック制御用コイル(16a),(16
b),(16c),(16d)が可動部である可動ホルダ(1
3)に取り付けられている可動コイル方式であるため
に、可動ホルダ(13)からのリード線(27)の配線があ
り、これを中継するために可動ホルダ(13)上にターミ
ナル基板(25)を設ける必要があり、また、このリード
線(27)を固定部であるヘッドベース(12)に固定する
ためにベース基板(28)が必要となり、結像素子駆動装
置の構成が複雑になっていた。
[Problems to be Solved by the Invention] As described above, the conventional imaging element driving device includes the focus control coil (15) and the track control coils (16a), (16).
b), (16c) and (16d) are movable holders (1
Since it is a moving coil system attached to 3), there is a lead wire (27) wiring from the movable holder (13), and in order to relay this, the terminal board (25) is placed on the movable holder (13). Is required, and a base substrate (28) is required to fix the lead wire (27) to the head base (12) which is a fixing portion, which complicates the structure of the imaging element driving device. It was

また、リード線(27)のターミナル基板(25)上へのハ
ンダ付け作業やリード線(27)の引き出し作業等の困難
かつ配線トラブルを起こし易い作業があり、組み立て性
が悪いという問題点があった。
In addition, there are problems such as soldering work of the lead wire (27) onto the terminal board (25) and work of pulling out the lead wire (27), which are easy to cause wiring troubles, resulting in poor assembly. It was

さらに、結像素子駆動装置の各制御動作に伴い、リード
線が繰り返し動くことになるため、接触不良や断線等が
発生し易く、装置の耐久性、信頼性に問題がある。
Further, since the lead wire is repeatedly moved with each control operation of the imaging element driving device, contact failure or disconnection is likely to occur, and there is a problem in durability and reliability of the device.

このような問題を解決するため、例えば特開昭60−8983
8号公報に示されているような、可動側に環状永久磁石
を配し、固定側に焦点位置制御用コイルとトラック制御
用コイルを配するように構成したものがある。この構成
によれば、可動部から引き出されるリード線を不要にす
ることができ、上記問題は解消される。
In order to solve such a problem, for example, JP-A-60-8983
As disclosed in Japanese Patent No. 8, there is a structure in which an annular permanent magnet is arranged on the movable side and a focus position control coil and a track control coil are arranged on the fixed side. With this configuration, the lead wire pulled out from the movable portion can be eliminated, and the above problem can be solved.

しかしながら、この公報に記載されたような構成では、
固定側の内周面に焦点制御用コイルとトラック制御用コ
イルとを重ねて配しているため、両コイルのうち、いず
れか一方のコイルの磁気ギャップがどうしても大きなも
のになってしまい、焦点制御またはトラック制御のいず
れかが犠牲にとなって駆動効率の悪いものになってしま
うという問題があり、この問題は可動側に重量物の永久
磁石を配した装置においては大きな問題である。
However, in the configuration as described in this publication,
Since the focus control coil and the track control coil are arranged on the inner peripheral surface on the fixed side in an overlapping manner, the magnetic gap of either one of the coils will inevitably become large, and the focus control will be performed. Alternatively, there is a problem that either the track control is sacrificed and the drive efficiency becomes poor, and this problem is a serious problem in a device in which a heavy permanent magnet is arranged on the movable side.

本考案は、このような駆動効率の問題を解消するために
なされたもので、可動側に永久磁石を配した装置におい
て、簡単な構成により良好な駆動効率を得られる結像素
子駆動装置を得ることを目的としている。
The present invention has been made to solve such a problem of driving efficiency, and in an apparatus having a permanent magnet on the movable side, an imaging element driving apparatus which can obtain good driving efficiency with a simple configuration is obtained. Is intended.

[問題点を解決するための手段] 本考案に係る結像素子駆動装置は、支軸に嵌着され、該
支軸の軸線方向に移動可能かつ該支軸のまわりに回動可
能な可動ホルダと、該可動ホルダ上の前記支軸の軸線か
ら偏心した位置にその光軸が前記軸線と平行になるよう
に保持された結像素子と、前記可動ホルダ1端部で取り
付けられることで前記支軸と同心的に配置されるととも
に、その着磁方向がラジアル方向でかつその大半の部分
が同一極性方向となり一部分が逆極性方向となるように
多極着磁された環状永久磁石と、前記支軸を固定する固
定部を形成するとともに、前記環状永久磁石の内周面及
び外周面との間にそれぞれ一定のギャップを保持しつつ
対向する2つの周面を有し、該環状永久磁石を包み込む
ように形成されたヨークと、前記環状永久磁石の内周面
あるいは外周面のいずれか一方と対向するよう前記ヨー
クの1周面に固定され、前記支軸と同心的に巻回された
焦点制御用のコイルと、前記環状永久磁石の内周面ある
いは外周面のいずれか他方と対向するよう前記ヨークの
他の1周面の前記環状永久磁石の着磁方向が反転する部
分と対向する位置をその中心として固定され、前記ヨー
クの周面と垂直な巻回軸を有するトラック制御用のコイ
ルとを備えたものである。
[Means for Solving the Problems] An image-forming element driving device according to the present invention is a movable holder that is fitted to a support shaft, is movable in the axial direction of the support shaft, and is rotatable around the support shaft. And an imaging element held on the movable holder at a position eccentric from the axis of the support shaft so that its optical axis is parallel to the axis, and the support is attached by the end of the movable holder 1. An annular permanent magnet, which is arranged concentrically with the shaft, is magnetized in a radial direction, and is magnetized in a multi-pole manner so that most of it is in the same polarity direction and a part is in the opposite polarity direction; A fixing portion for fixing the shaft is formed, and the annular permanent magnet has two peripheral surfaces facing each other while maintaining a constant gap between the inner peripheral surface and the outer peripheral surface, and encloses the annular permanent magnet. And the ring-shaped permanent A focus control coil fixed to one peripheral surface of the yoke so as to face either the inner peripheral surface or the outer peripheral surface of the permanent magnet and wound concentrically with the spindle, and the annular permanent magnet. The yoke is fixed around a position opposite to the other of the inner peripheral surface and the outer peripheral surface of the other peripheral surface of the yoke opposite to the portion where the magnetization direction of the annular permanent magnet reverses, and is fixed around the yoke. And a coil for track control having a winding axis perpendicular to the plane.

[作用] 本考案に係る結像素子駆動装置では、可動部である結像
素子ホルダからのリード線がなくなるとともに、永久磁
石と焦点制御用,トラック制御用の各コイルとの間の磁
気ギャップを同時に小さくでき、かつ、閉磁路構成とす
ることで両制御の駆動効率を高効率化できる。
[Operation] In the imaging element driving device according to the present invention, the lead wire from the imaging element holder, which is a movable part, is eliminated, and the magnetic gap between the permanent magnet and each coil for focus control and track control is eliminated. At the same time, the size can be reduced, and the drive efficiency of both controls can be improved by adopting a closed magnetic circuit configuration.

[実施例] 以下、本考案の一実施例を図面に基づき説明する。[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

第1図は本考案の一実施例に係る結像素子駆動装置の組
立状態を示す分解斜視図、第2図は第1図の結像素子駆
動装置の平面図、第3図は第2図のI−I線に沿う縦断
面図、第4図は第2図のII−IIに沿う縦断面図、第5図
は第2図の可動ホルダ部を除いた磁気回路構成を示す部
分拡大平面図である。
1 is an exploded perspective view showing an assembled state of an image forming element driving device according to an embodiment of the present invention, FIG. 2 is a plan view of the image forming element driving device of FIG. 1, and FIG. 3 is FIG. 4 is a vertical sectional view taken along line I-I of FIG. 4, FIG. 4 is a vertical sectional view taken along line II-II of FIG. 2, and FIG. 5 is a partially enlarged plan view showing a magnetic circuit configuration excluding the movable holder portion of FIG. It is a figure.

図において、(15)は結像素子である対物レンズ、(5
2)は円筒状の軸受部(53)を中央部付近に備え、軸受
部(53)より所定距離偏心した位置に対物レンズ(51)
を固定的に保持している可動ホルダ、(55)は該可動ホ
ルダ(52)の下部に設けられたリング部(54)に固定的
に保持されたリング状の永久磁石であって、ラジアル方
向に着磁されている。(56)は固定部に形成されるベー
スヨークで、リング状の永久磁石(55)の外周面方向に
外側出部(57a),(57b)を有するとともに、この永久
磁石(55)の内周面方向に内側突出部(58)を有してい
る。(59)はベースヨーク(56)のほぼ中央部に固定的
に立設され、可動ホルダ(52)が第3図矢印Aの軸線方
向に摺動自在かつ第2図矢印Bの方向に回転自在に移動
制御されるよう軸受部(53)と嵌着された支軸、(60)
はベースヨーク(56)の内側突出部(58)の外周に固定
的に配されている焦点制御用コイル、(61a),(61
b),(61c),(61d)はベースヨーク(56)の外側突
起部(57a),(57b)の内周側に配された矩形状のトラ
ック制御用コイルである。また、(62)はアウトサート
加工等の複合加工手段によって固定部たるヨーク(56)
の外側突起部(57a),(57b)と、内側突起部(58)と
の間に該ベースヨーク(56)に固定的に設けられ、矩形
状のトラック制御用コイル(61a),(61b),(61
c),(61d)を収納し、位置決めするための凹部(63
a),(63b),(63c),(63d)を有した非磁性材料か
らなるコイル基台である。
In the figure, (15) is an objective lens which is an imaging element, and (5)
2) is provided with a cylindrical bearing part (53) near the center part, and the objective lens (51) is located at a position decentered from the bearing part (53) by a predetermined distance.
A movable holder (55) that fixedly holds the ring is a ring-shaped permanent magnet that is fixedly held by a ring portion (54) provided at a lower portion of the movable holder (52), and is a radial direction. Is magnetized. Reference numeral (56) is a base yoke formed on the fixed portion, which has outer protruding portions (57a), (57b) in the outer peripheral surface direction of the ring-shaped permanent magnet (55) and has an inner peripheral portion of the permanent magnet (55). It has an inward projection (58) in the plane direction. The reference numeral (59) is fixedly erected substantially in the center of the base yoke (56), and the movable holder (52) is slidable in the axial direction of arrow A in FIG. 3 and rotatable in the direction of arrow B in FIG. Support shaft fitted to the bearing (53) so that the movement is controlled to
Is a focus control coil fixedly arranged on the outer periphery of the inner protruding portion (58) of the base yoke (56), (61a), (61).
Reference numerals b), (61c) and (61d) are rectangular track control coils arranged on the inner peripheral sides of the outer protrusions (57a) and (57b) of the base yoke (56). Further, (62) is a yoke (56) which is a fixed portion by a composite processing means such as outsert processing.
Rectangular track control coils (61a), (61b) fixedly provided on the base yoke (56) between the outer protrusions (57a, 57b) and the inner protrusion (58). , (61
c), (61d) for accommodating and positioning recess (63
It is a coil base made of a non-magnetic material having a), (63b), (63c) and (63d).

トラック制御用コイル(61a),(61b),(61c),(6
1d)は上述のごとく矩形状を呈しており、該トラック制
御用コイル(61a)と(61b)並びに(61c)と(61d)の
一辺が近接するようにコイル基台に(62)に固定されて
いる。
Track control coils (61a), (61b), (61c), (6
1d) has a rectangular shape as described above, and is fixed to (62) on the coil base so that one side of the track control coils (61a) and (61b) and (61c) and (61d) are close to each other. ing.

リング状の環状永久磁石(55)は焦点制御用コイル(6
0)と矩形状のトラック制御用コイル(61a),(61
b),(61c),(61d)との間に所定のギャップを有し
て配されており、前記トラック制御用コイル(61a),
(61b),(61c),(61d)の辺が近接している部分
と、点対称位置をなし、対向する面において、他の大半
の極性をリング中心に対して同方向のラジアル方向に同
じくする同一周面と磁極が逆極性になる方向に配して着
磁されている。
The ring-shaped annular permanent magnet (55) is a coil for focus control (6
0) and rectangular track control coils (61a), (61
b), (61c) and (61d) are arranged with a predetermined gap, and the track control coils (61a),
(61b), (61c), and (61d) are close to each other in a point-symmetrical position, and most of the other polarities are the same in the same radial direction with respect to the center of the ring on the opposing surfaces. The magnets are magnetized by arranging in the direction in which the same peripheral surface and the magnetic pole have opposite polarities.

次に、本考案の一実施例の動作について説明する。Next, the operation of the embodiment of the present invention will be described.

焦点制御用コイル(60)に所望の制御電流を流すことに
よって、可動ホルダ(52)が矢印A方向に摺動し、結像
素子(51)の光軸方向の焦点制御を行うことができる。
By supplying a desired control current to the focus control coil (60), the movable holder (52) slides in the direction of arrow A, and focus control of the imaging element (51) in the optical axis direction can be performed.

また、前記矩形状のトラック制御用コイル(61a),(6
1b),(61c),(61d)に所定の制御電流を流すことに
よって、可動ホルダ(52)が第2図に示す矢印Bの方向
に回動し、対物レンズ(51)のトラック制御を行うこと
ができる。この際、前述したように矩形状のトラック制
御用コイル(61a),(61b),(61c),(61d)の縦の
辺の一辺と他辺においては、対向する可動部側永久磁石
(55)の磁極が逆極性方向をなすように配置され、該ト
ラック制御用コイルには逆方向の磁束が鎖交し、それぞ
れ逆向きの電流が流れることにより、コイルの両辺をト
ラック制御に有効に利用することができる。
Further, the rectangular track control coils (61a), (6
By supplying a predetermined control current to 1b), (61c) and (61d), the movable holder (52) is rotated in the direction of arrow B shown in FIG. 2 to perform the track control of the objective lens (51). be able to. At this time, as described above, on one side and the other side of the vertical sides of the rectangular track control coils (61a), (61b), (61c), (61d), the opposing movable part side permanent magnets (55 ) Magnetic poles are arranged so as to have opposite polarities, magnetic fluxes in opposite directions are linked to the track control coil, and currents in opposite directions flow, respectively, so that both sides of the coil are effectively used for track control. can do.

また、固定部であるベースヨーク(56)中に多極化着磁
されたリング状の永久磁石(55)を該ヨークとのギャッ
プが一様になるように配置しているので、前述したよう
に、該リング状多極化永久磁石とヨークとによって生じ
る引力及び斥力を低減することができる。
Further, since the ring-shaped permanent magnet (55) magnetized in multiple poles is arranged in the base yoke (56) which is the fixed portion so that the gap with the yoke is uniform, as described above, The attractive force and the repulsive force generated by the ring-shaped multi-pole permanent magnet and the yoke can be reduced.

さらに好ましくは、該ヨークに接触または部品を介して
間接接触するように制御コイルの位置決め用の基台(6
2)を固定的に設けることによって、ワンタッチで相互
に位置決めできることになり、結像素子駆動装置の組立
性が向上する。この時の位置決め基台(62)の材質は、
非磁性材料からなることが好ましい。
More preferably, the base (6) for positioning the control coil is arranged so as to come into contact with the yoke or indirectly through the component.
By fixing 2), it is possible to position each other with one touch, and the assembling property of the imaging element driving device is improved. The material of the positioning base (62) at this time is
It is preferably made of a non-magnetic material.

[考案の効果] 以上説明したように、本考案によれば、可動部から引き
出されるリード線を全く不要にし、リード線端子の接触
不良や断線がなく、耐久性及び信頼性の高い作業性の良
好な結像素子駆動装置を得ることができる。
[Effects of the Invention] As described above, according to the present invention, the lead wire pulled out from the movable portion is completely unnecessary, and there is no contact failure or disconnection of the lead wire terminal, which is highly durable and has high workability. A good imaging element driving device can be obtained.

また、永久磁石とヨークによって生じる引力や斥力を低
減することができる。
Further, the attractive force and repulsive force generated by the permanent magnet and the yoke can be reduced.

さらに本考案によれば、焦点制御用及びトラック制御用
の各コイルと環状永久磁石との間の磁気ギャップのいず
れをも最小とした閉磁路構成にできるので、両制御を高
駆動効率に実行できる結像素子駆動装置が得られる。
Further, according to the present invention, since the closed magnetic circuit structure can be made to minimize the magnetic gaps between the focus control and track control coils and the annular permanent magnet, both controls can be executed with high driving efficiency. An imaging device driving device is obtained.

【図面の簡単な説明】[Brief description of drawings]

第1図は本考案の一実施例を説明する結像素子駆動装置
の組立状態を示す分解斜視図、第2図は第1図の結像素
子駆動装置の平面図、第3図は第2図のI−Iに沿う縦
断面図、第4図は第2図のII−IIに沿う縦断面図、第5
図は第2図の可動ホルダ部を取り除いた磁気回路構成を
示す平面図、第6図は従来の結像素子駆動装置の一部を
切り欠いた平面図、第7図は第6図に示す従来の結像素
子駆動装置の断面図である。 図において、(51)は結像素子、(52)は可動ホルダ、
(55)は永久磁石、(56)はベースヨーク、(59)は支
軸、(60)は焦点制御用コイル、(61a〜61d)はトラッ
ク制御用コイル、(62)はコイル基台である。 なお、図中、同一符号は同一、または相当部分を示す。
FIG. 1 is an exploded perspective view showing an assembled state of an image forming element driving device for explaining an embodiment of the present invention, FIG. 2 is a plan view of the image forming element driving device of FIG. 1, and FIG. FIG. 4 is a vertical sectional view taken along line II of FIG. 4, and FIG. 4 is a vertical sectional view taken along line II-II of FIG.
FIG. 7 is a plan view showing a magnetic circuit configuration in which the movable holder portion in FIG. 2 is removed, FIG. 6 is a plan view in which a part of a conventional imaging element driving device is cut away, and FIG. 7 is shown in FIG. It is sectional drawing of the conventional imaging element drive device. In the figure, (51) is an imaging element, (52) is a movable holder,
(55) is a permanent magnet, (56) is a base yoke, (59) is a spindle, (60) is a focus control coil, (61a to 61d) are track control coils, and (62) is a coil base. . In the drawings, the same reference numerals indicate the same or corresponding parts.

───────────────────────────────────────────────────── フロントページの続き (72)考案者 木目 健治朗 京都府長岡京市馬場図所1番地 三菱電機 株式会社電子商品開発研究所内 (56)参考文献 特開 昭60−89838(JP,A) 特開 昭58−98850(JP,A) 特開 昭58−12144(JP,A) 特開 昭61−120354(JP,A) 実開 昭60−44225(JP,U) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenjiro Kime, Inventor Kenjiro Kime, No. 1 Baba Institute, Nagaokakyo City, Kyoto Prefecture Mitsubishi Electric Corporation Electronic Product Development Laboratory (56) References JP-A-60-89838 (JP, A) Kai 58-98850 (JP, A) JP 58-12144 (JP, A) JP 61-120354 (JP, A) Actual JP 60-44225 (JP, U)

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】支軸に嵌着され、該支軸の軸線方向に移動
可能かつ該支軸のまわりに回動可能な可動ホルダと、 該可動ホルダ上の前記支軸の軸線から偏心した位置にそ
の光軸が前記軸線と平行になるように保持された結像素
子と、 前記可動ホルダに1端部で取り付けられることで前記支
軸と同心的に配置されるとともに、その着磁方向がラジ
アル方向でかつその大半の部分が同一極性方向となり一
部分が逆極性方向となるように多極着磁された環状永久
磁石と、 前記支軸を固定する固定部を形成するとともに、前記環
状永久磁石の内周面及び外周面との間にそれぞれ一定の
ギャップを保持しつつ対向する2つの周面を有し、該環
状永久磁石を包み込むように形成されたヨークと、 前記環状永久磁石の内周面あるいは外周面のいずれか一
方と対向するよう前記ヨークの1周面に固定され、前記
支軸と同心的に巻回された焦点制御用のコイルと、 前記環状永久磁石の内周面あるいは外周面のいずれか他
方と対向するよう前記ヨークの他の1周面の前記環状永
久磁石の着磁方向が反転する部分と対向する位置をその
中心として固定され、前記ヨークの周面と垂直な巻回軸
を有するトラック制御用のコイルとを備えたことを特徴
とする結像素子駆動装置。
1. A movable holder that is fitted to a support shaft, is movable in the axial direction of the support shaft, and is rotatable around the support shaft, and a position on the movable holder that is eccentric from the axis of the support shaft. An imaging element that is held so that its optical axis is parallel to the axis, and is mounted concentrically with the support shaft by being attached to the movable holder at one end, and its magnetization direction is An annular permanent magnet that is multi-pole magnetized in a radial direction, and most of it has the same polarity direction and a part of it has the opposite polarity direction; and a fixing portion that fixes the support shaft, and the annular permanent magnet. An inner peripheral surface of the annular permanent magnet, the yoke having two peripheral surfaces facing each other with a constant gap between the inner peripheral surface and the outer peripheral surface, the yoke being formed so as to enclose the annular permanent magnet. Face or outer surface The focus control coil fixed to one circumferential surface of the yoke so as to face and wound concentrically with the support shaft, and faces the other one of the inner circumferential surface and the outer circumferential surface of the annular permanent magnet. A coil for track control having a winding axis that is fixed around a position on the other one circumferential surface of the yoke that faces the portion where the magnetization direction of the annular permanent magnet reverses, and that is perpendicular to the circumferential surface of the yoke. An image forming element driving device comprising:
【請求項2】前記焦点制御用コイル及びトラック制御用
コイルを前記ヨークに位置決め固定するための非磁性体
から成る基台を、該ヨークに対して少なくともその一部
が接触するように配したことを特徴とする実用新案登録
請求の範囲第1項記載の結像素子駆動装置。
2. A base made of a non-magnetic material for positioning and fixing the focus control coil and the track control coil to the yoke is arranged such that at least a part of the base is in contact with the yoke. The image forming element driving device according to claim 1, wherein the utility model is registered.
JP1986138101U 1986-09-09 1986-09-09 Imaging element drive Expired - Lifetime JPH0718015Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986138101U JPH0718015Y2 (en) 1986-09-09 1986-09-09 Imaging element drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986138101U JPH0718015Y2 (en) 1986-09-09 1986-09-09 Imaging element drive

Publications (2)

Publication Number Publication Date
JPS6344221U JPS6344221U (en) 1988-03-24
JPH0718015Y2 true JPH0718015Y2 (en) 1995-04-26

Family

ID=31042777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986138101U Expired - Lifetime JPH0718015Y2 (en) 1986-09-09 1986-09-09 Imaging element drive

Country Status (1)

Country Link
JP (1) JPH0718015Y2 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6044225U (en) * 1983-09-05 1985-03-28 ソニー株式会社 Optical pickup device
JPS6089838A (en) * 1983-10-24 1985-05-20 Asahi Optical Co Ltd Device for setting neutral position in track direction of objective lens driver in optical information recording and reproducing device

Also Published As

Publication number Publication date
JPS6344221U (en) 1988-03-24

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