JPH0442616U

JPH0442616U -

Info

Publication number: JPH0442616U
Application number: JP8428590U
Authority: JP
Priority date: 1990-08-09
Filing date: 1990-08-09
Publication date: 1992-04-10

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
ズ機構を内蔵するカメラシステムの電気回路のブ
ロツク構成図、第２図は、上記第１図のカメラの
外観を示す平面図、第３図は、上記第２図のＢ矢
視図、第４図は、上記第２図のＣ矢視図、第５図
は、上記第１図のカメラの裏蓋の操作スイツチ部
を示す図、第６図は、上記第１図のカメラの外部
ＬＣＤパネルの表示内容を示す図、第７図Ａ，Ｂ
は、それぞれ上記第１図のカメラに内蔵されるズ
ームレンズ鏡筒の分解斜視図、第８図は、上記第
１図のカメラに内蔵されるズームレンズ鏡筒の縦
断面図、第９図は、上記第７図のズームレンズ鏡
筒に組込まれるズームエンコーダの展開図、第１
０図は、上記第１図のカメラのズームレンズ機構
におけるフオーカスリング回転角に対する合焦レ
ンズ群繰出量を示す図、第１１図は、上記第１図
のカメラのズームレンズ機構における、各モード
時のズーム位置に対する合焦レンズ群繰出量を示
す図、第１２図は、上記第１１図の繰出量を駆動
パルス数で示した線図である。４３……ＡＦレジスタ１（通常の至近撮影にお
ける合焦レンズ群位置記憶手段）、６７……ＡＦ
モータ（合焦レンズ群駆動手段）、６８……ＡＦ
ＰＩ（合焦レンズ群位置検出手段）、７５……
キーＳＷ群１のマクロＳＷ（近接撮影モードの設
定及び解除手段）、１０１……メインＣＰＵ（合
焦レンズ位置検出値と記憶値を比較する手段を含
む）。 Fig. 1 is a block diagram of an electric circuit of a camera system incorporating a zoom lens mechanism showing an embodiment of the present invention, Fig. 2 is a plan view showing the external appearance of the camera shown in Fig. 1, and Fig. 3. is a view in the direction of arrow B in FIG. 2, FIG. 4 is a view in the direction of arrow C in FIG. Figure 6 is a diagram showing the display contents of the external LCD panel of the camera shown in Figure 1 above, Figures 7A and B
1 is an exploded perspective view of the zoom lens barrel built into the camera shown in FIG. 1, FIG. 8 is a vertical sectional view of the zoom lens barrel built into the camera shown in FIG. 1, and FIG. , a developed view of the zoom encoder incorporated in the zoom lens barrel shown in FIG. 7 above, 1st
Figure 0 is a diagram showing the focusing lens group extension amount with respect to the rotation angle of the focus ring in the zoom lens mechanism of the camera shown in Figure 1 above, and Figure 11 is a diagram showing each mode in the zoom lens mechanism of the camera shown in Figure 1 above. FIG. 12 is a graph showing the amount of extension of the focusing lens group shown in FIG. 11 in terms of the number of driving pulses. 43...AF register 1 (focusing lens group position storage means for normal close-up photography), 67...AF
Motor (focusing lens group driving means), 68...AF
PI (focusing lens group position detection means), 75 ...
Macro SW of key SW group 1 (close-up shooting mode setting and canceling means), 101 . . . main CPU (including means for comparing the focus lens position detection value and the stored value).

Claims

[Claims for Utility Model Registration] In a zoom lens mechanism capable of close-up photography by extending the focusing lens group further than the focus position during normal close-up photography at at least one specific focal length, A driving means for extending and retracting, a position detecting means for detecting the extended position of the focusing lens group, a storage means for storing the extended position of the focusing lens group during normal close-up shooting, and a detection of the position detecting means. a comparison means for comparing the value with a value stored in the storage means; and a setting means for setting and canceling the close-up photography mode, and when the close-up photography mode is set to the normal photography mode, the comparison means: When it is determined that the focusing lens group is extended beyond the extended position during close-up photography stored in the storage means, the focusing lens group is retracted to the close-up photography position by the driving means. A zoom lens mechanism.