JPS638712U

JPS638712U -

Info

Publication number: JPS638712U
Application number: JP10173886U
Authority: JP
Priority date: 1986-07-02
Filing date: 1986-07-02
Publication date: 1988-01-21

Description

[Brief explanation of the drawing]

第１図は、本考案の一実施例を示すズームレン
ズの合焦装置の断面図、第２図は、上記第１図中
のストツパ部材の取付態様を示す分解斜視図、第
３図は、マクロボタンの正面図、第４，５図は、
ストツパ部材の通常使用時とマクロ使用時の作動
状態をそれぞれ示す平面展開図、第６図は、従来
のズームレンズの合焦装置の一例を示す分解斜視
図、第７図は、上記第６図の合焦装置のマクロ時
の要部拡大図である。１２……レンズ枠、２５……ズームリング、２
５ｂ……切欠凹部（凹部）、２８Ａ……第１距離
リング（距離リング）、３２……ストツパ、３３
……固定外筒（固定筒）、３７……ストツプ部材
。 FIG. 1 is a sectional view of a zoom lens focusing device showing an embodiment of the present invention, FIG. 2 is an exploded perspective view showing how the stopper member shown in FIG. 1 is attached, and FIG. The front view of the macro button, Figures 4 and 5 are as follows:
FIG. 6 is an exploded perspective view showing an example of a conventional zoom lens focusing device; FIG. 7 is the same as that shown in FIG. 6 above. FIG. 2 is an enlarged view of main parts of the focusing device in macro mode. 12... Lens frame, 25... Zoom ring, 2
5b... Notch recess (recess), 28A... First distance ring (distance ring), 32... Stopper, 33
...Fixed outer cylinder (fixed cylinder), 37... Stop member.

Claims

[Scope of Claim for Utility Model Registration] A distance ring for focusing by rotating a lens frame; a stopper provided on the distance ring; The stopper of the distance ring comes into contact with the distance ring to determine the rotation limit range on the short distance side, and is moved in the optical axis direction by an external operation and retreated from the rotation path of the stopper, A stop member that extends the rotational limit range of the distance ring to a closer distance; and a recess that changes the focal length by rotation and allows the stop member to move in the direction of the optical axis at a predetermined focal length. A focusing device for a zoom lens, comprising a zoom ring having the following features.