JPS603925U

JPS603925U - Objective lens drive device

Info

Publication number: JPS603925U
Application number: JP9677983U
Authority: JP
Inventors: 丸田　啓二; 直也江口
Original assignee: ソニー株式会社
Priority date: 1983-06-23
Filing date: 1983-06-23
Publication date: 1985-01-12

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 the drawing]

第１図〜第４図は最近提案されている対物レンズ駆動装
置の一例を示す図面であって、第１図は分解斜視図、第
２図は平面図、第３図は第２図■−ｍ線断面図、第４図
は第２図のＩＶ−ＩＶ線断面図である。第５図は第１図
〜第４図の弾性支持部材１７のフォーカシングの際の変
形を示す図、第６図は第５図の場合に支持軸３と対物レ
ンズ保持体９との関係を示す図である。第７図Ａおよび
Ｂは夫々本考案による対物レンズ駆動装置に係わる弾性
支持部材の一実施例を示す平面図および同図ＡのＢ−Ｂ
線断面図である。なお図面に用いられている符号において、１・・・基台
、３・・・支持軸、９・・・、対物レンズ保持体、１３
・・・対物レンズ、１７ａ・・・ゴム取付金具、３１・
・・弾性支持部材、３２・・・弾性支持板、３３・・・
第１の腕、３４・・・第２の腕、３５・・・第１の連結
部、３６・・・第３の腕、３７・・・第４の腕、３８・
・・第２の連結部、３９・・・突出部である。 ”）”’＞　　−？グ／／／川４　　ｉｅ　　７゜２５／Ｌ　２５．２ｆ！ｉｆ＼　　＼　　、／／FIGS. 1 to 4 are drawings showing an example of an objective lens driving device that has been proposed recently, in which FIG. 1 is an exploded perspective view, FIG. 2 is a plan view, and FIG. 3 is a diagram of FIG. FIG. 4 is a sectional view taken along the line IV--IV in FIG. 2. FIG. 5 shows the deformation of the elastic support member 17 in FIGS. 1 to 4 during focusing, and FIG. 6 shows the relationship between the support shaft 3 and the objective lens holder 9 in the case of FIG. It is a diagram. FIGS. 7A and 7B are a plan view showing an embodiment of the elastic support member related to the objective lens driving device according to the present invention, and B-B in FIG. 7A, respectively.
FIG. In addition, in the symbols used in the drawings, 1...base, 3...support shaft, 9...objective lens holder, 13
...Objective lens, 17a...Rubber mounting bracket, 31.
...Elastic support member, 32...Elastic support plate, 33...
1st arm, 34... 2nd arm, 35... 1st connecting part, 36... 3rd arm, 37... 4th arm, 38...
. . . second connecting portion, 39 . . . protruding portion. ”)”’> −? gu///river 4 ie 7°25/L 25.2f! if \\ , //

Claims

[Claims for Utility Model Registration] An objective lens holder supported by a support shaft so as to be rotatable around the axis of the support shaft and slidable in the axial direction of the support shaft; an objective lens held at a position spaced apart from the axis of the support shaft so that its optical axis is substantially parallel to the axis of the support shaft; and a rotation of the objective lens holder that rotates around the axis of the support shaft. In an objective lens drive device comprising: a neutral position holding mechanism that returns the objective lens holder to a neutral position when the dynamic drive is released, the neutral position holding mechanism (a) operates in a plane substantially orthogonal to the axis of the support shaft; At,
(b) first and second arm portions extending in both directions away from the axis of the support shaft from the one end side fixed to the fixing part; (b) positions of these first and second arm portions away from the one end side; (e) a first connecting portion connected at
third and fourth arm portions extending from both ends of the first connecting portion on the first and second arm side toward the one end side; fd) connecting these third and fourth arm portions; Second
and (e) a protrusion that protrudes from the center of the second connecting portion toward the first connecting portion and that is connected to a position spaced apart from the axis of the support shaft on the objective lens holder. An objective lens driving device characterized in that the first to fourth arm portions, the first and second connecting portions, and the protruding portion are integrally formed of an elastic material.