JPS59112323U

JPS59112323U - Objective lens drive device

Info

Publication number: JPS59112323U
Application number: JP304783U
Authority: JP
Inventors: 宮城　清
Original assignee: 日本テクサ株式会社
Priority date: 1983-01-13
Filing date: 1983-01-13
Publication date: 1984-07-28

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

[Brief explanation of drawings]

第１図は従来の対物レンズ駆動装置の一例の構成を示す
一部断面の側面図、第２図は従来の対物レンズ駆動装置
に使用される、うす巻き状板ばねの１例を示す平面図、
第３図および第４図は、本考案の対物レンズ駆動装置の
一例の構成を示す斜視図および中央部断面図、第５図は
分解斜視図、第６図は駆動部材の分解斜視図、第７図お
よび第８図は本考案の対物レンズ駆動装置の他の例の構
成を示す斜視図および中央部断面図、第９図は分解斜視
図、第１０図は駆動部材の分解斜視図、第１１図は上記
のコイル部分の分解斜視図である。１〜１″・・・対物レンズ、２〜２′・・・うす巻き状
板ばね、２″〜２“Ｉ・・・Ｍ字型板バネ、２″・・・
５字型棒ばね、３〜３′・・・台座、４〜４″・・・レ
ンズ中・　枠、５・・・外枠、６・・・リング、７〜７
″・・・コイル、８〜８＃′・・・磁気間隔、９・・・
リング状の永久磁石、９′〜９″・・・箱型永久磁石、
１０〜１０″、１１〜１１“、１２〜１２′・・・ポー
ルピース、１３゜１３’、　　１４．　１４’・・・可
動部材と電磁駆動部材の結合部、１５〜１５′・・・電
磁駆動部材、１７゜１７′・・・コイル座、１８．１８
’・・・コイル座回転軸心、２５．２５’・・・コイル
座回転軸心の軸承、３１．３１’、３２．３２’・・・
Ｍ字型板バネ座、３３．３３’・・・駆動用部材取付座
、１３１゜１３１′・・・レンズ中枠スライドレールの
ピン、１３３．１３３’・・・レンズ中枠のスライド用
孔と溝、１３５・・・５字型棒ばねの取付座への固定具
。補正　昭５８．　９．１９実用新案登録請求の範囲、図面の簡単な説明を次のよう
に補正する。。Ｏ実用新案登録請求の範囲（１）対物レンズを支持し該対物レンズの光軸方向に移
動可能な対物レンズ支持部材と、該対物レンズ支持部材
の上記移動を司る可動線輪、型式の電磁駆動部材とから
なり、可動線輪取付座の回動軸を該回動軸の両側の重量
が平衡する位置に位置付けたことを特徴とする対物レン
ズ駆動装置。（２）対物レンズ支持部材を、案内溝及び支持孔と支持
柱との組合せにより摺動可能とした実用新案登録請求の
範囲第１項記載の対物レンズ駆動装置。図面の簡単な説明第１図及び第２図は従来の対物レンズ駆動装置の実施例
を表すもので、第１図は正面の半断面図、第２図は平面
図である。第３図乃至第１１図は本考案対物レンズ駆動
装置の好ましい実施例を表す図で、第３図乃至第６図に
−の実施例を、第７図乃至第１１図に他の実施例を示し
である。第３図は斜視図である。第４図は、第３図にお
けるＩＶ−■線に沿って切断して示す断面図である。第
５図は、分解斜視図である。第６図は、駆動部材の分解
斜視図である。第７図乃至第１１図は、他の実施例を示
すものである。第７図は斜視図である。第８図は、第７図における■−■線に沿って切断１、た
断面図である。第９図は、分解斜視図である。第１０図は、駆動部材の分解斜視図である。第１１図は
、駆動部材のコイル部の分解斜視図である。１６・・・対物レンズ、１７・・・対物レンズ支持部材
、２１・・・支持板ばね、２６・・・台座、２７・・・
支持柱、３０・・・駆動部材、３１・・・ポールピース
、３２・・・コイル、３３・・・可動線輪取付座、３４
・・・永久磁石、３５・・・支持ピン、３６・・・ピン
、３７・・・支持台、３８・・・支持透孔、４１・・・
案内溝、４２・・・支持孔。Fig. 1 is a partially sectional side view showing the configuration of an example of a conventional objective lens drive device, and Fig. 2 is a plan view showing an example of a thinly wound leaf spring used in the conventional objective lens drive device. ,
3 and 4 are a perspective view and a sectional view of the central part showing the configuration of an example of the objective lens driving device of the present invention, FIG. 5 is an exploded perspective view, FIG. 6 is an exploded perspective view of the driving member, and FIG. 7 and 8 are a perspective view and a sectional view of the central part showing the structure of another example of the objective lens driving device of the present invention, FIG. 9 is an exploded perspective view, FIG. 10 is an exploded perspective view of the driving member, and FIG. FIG. 11 is an exploded perspective view of the above coil portion. 1 to 1"...Objective lens, 2 to 2'...Thinly wound leaf spring, 2" to 2"I...M-shaped leaf spring, 2"...
5-shaped bar spring, 3~3'...Pedestal, 4~4''...Lens center/frame, 5...Outer frame, 6...Ring, 7~7
″...Coil, 8~8#'...Magnetic spacing, 9...
Ring-shaped permanent magnet, 9'~9''...box-shaped permanent magnet,
10~10'', 11~11'', 12~12'...Pole piece, 13°13', 14. 14'...Joining part of movable member and electromagnetic drive member, 15-15'...Electromagnetic drive member, 17°17'...Coil seat, 18.18
'... Coil seat rotation axis, 25.25'... Coil seat rotation axis bearing, 31.31', 32.32'...
M-shaped plate spring seat, 33.33'... Drive member mounting seat, 131°131'... Lens middle frame slide rail pin, 133.133'... Lens middle frame slide hole and Groove, 135...Fixing fixture for the 5-shaped bar spring mounting seat. Correction 1984. 9.19 The claims for utility model registration and the brief description of the drawings are amended as follows. . O Utility Model Registration Claims (1) An objective lens support member that supports an objective lens and is movable in the optical axis direction of the objective lens, and a movable wire and type electromagnetic drive that controls the movement of the objective lens support member. 1. An objective lens drive device comprising: a rotating shaft of a movable wire ring mounting seat positioned at a position where weights on both sides of the rotating shaft are balanced. (2) The objective lens drive device according to claim 1, wherein the objective lens support member is slidable by a combination of a guide groove, a support hole, and a support column. BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 and 2 show an embodiment of a conventional objective lens driving device, with FIG. 1 being a front half-sectional view and FIG. 2 being a plan view. 3 to 11 are diagrams showing preferred embodiments of the objective lens driving device of the present invention. This is an indication. FIG. 3 is a perspective view. FIG. 4 is a cross-sectional view taken along line IV-■ in FIG. 3. FIG. 5 is an exploded perspective view. FIG. 6 is an exploded perspective view of the drive member. 7 to 11 show other embodiments. FIG. 7 is a perspective view. FIG. 8 is a sectional view taken along line 1--2 in FIG. 7. FIG. 9 is an exploded perspective view. FIG. 10 is an exploded perspective view of the drive member. FIG. 11 is an exploded perspective view of the coil portion of the drive member. 16... Objective lens, 17... Objective lens support member, 21... Support leaf spring, 26... Pedestal, 27...
Support column, 30... Drive member, 31... Pole piece, 32... Coil, 33... Movable wire ring mounting seat, 34
...Permanent magnet, 35...Support pin, 36...Pin, 37...Support stand, 38...Support through hole, 41...
Guide groove, 42...support hole.

Claims

[Scope of utility model registration request]

(1) A movable member that moves integrally with the objective lens or its holding member, a support member made of a plate spring that supports the movable member so as to be movable in the optical axis direction of the objective lens, and a support member that supports the movable member in the optical axis direction. An objective comprising: a movable wire-type electromagnetic drive means for moving the object; and the center of gravity of the total of the movable member including the lens and the movable portion of the drive member is arranged on the rotation axis of the movable wire. Lens drive device.

(2) The objective lens driving device according to claim 1, wherein the movable member is supported by a slide rail and a spring so as to be movable in the optical axis direction of the objective lens.