JPH0343633U

JPH0343633U -

Info

Publication number: JPH0343633U
Application number: JP10413889U
Authority: JP
Priority date: 1989-09-05
Filing date: 1989-09-05
Publication date: 1991-04-24

Description

[Brief explanation of drawings]

第１図は本考案によるシヤツター装置の一実施
例を含むズームレンズ鏡筒の要部縦断面図、第２
図は第１図のシヤツター装置の概略平面図、第３
図はシヤツター装置の要部断面図、第４図はカム
板とカムギヤの当接関係を示す説明図、第５図は
マグネツトロータと絞り切り鉄ピンとの位置関係
を示す説明図、第６図、第７図は夫々全開領域の
開口波形を示す図、第８図は小絞り領域の開口波
形を示す図、第９図は従来の開口波形を示す図、
第１０図はシヤツター羽根の平面図、第１１図は
透過型フオトインタラプタによつて出力されるパ
ルス波形を示す図、第１２図は本実施例による開
口波形を示す図、第１３図は他のシヤツター羽根
を示す平面図、第１４図は開口波形の立上り波形
を示す図、第１５図は開口波形を示す図、第１６
図は更に別のシヤツター羽根を示す要部平面図、
第１７図は開口波形の立上り波形を示す図である
。１……レンズ鏡筒、４……シヤツター装置、６
……カム板、７……カムギヤ、９……アクチユエ
ータ、１２……マグネツトロータ、１２ａ……回
軸、１７……絞り切り鉄ピン、１８……バネ、２
１……調整ネジ、２４，２５……シヤツター羽根
。 FIG. 1 is a longitudinal cross-sectional view of a main part of a zoom lens barrel including an embodiment of a shutter device according to the present invention, and FIG.
The figure is a schematic plan view of the shutter device in Figure 1, and
The figure is a sectional view of the main parts of the shutter device, Figure 4 is an explanatory diagram showing the contact relationship between the cam plate and the cam gear, Figure 5 is an explanatory diagram showing the positional relationship between the magnet rotor and the drawing iron pin, and Figure 6 , FIG. 7 is a diagram showing the aperture waveform in the fully open region, FIG. 8 is a diagram showing the aperture waveform in the small aperture region, and FIG. 9 is a diagram showing the conventional aperture waveform.
FIG. 10 is a plan view of the shutter blade, FIG. 11 is a diagram showing the pulse waveform output by the transmission type photo interrupter, FIG. 12 is a diagram showing the aperture waveform according to this embodiment, and FIG. 13 is a diagram showing other 14 is a plan view showing the shutter blade; FIG. 14 is a diagram showing the rising waveform of the aperture waveform; FIG. 15 is a diagram showing the aperture waveform; FIG. 16 is a diagram showing the aperture waveform.
The figure is a plan view of the main part showing another shutter blade,
FIG. 17 is a diagram showing the rising waveform of the aperture waveform. 1... Lens barrel, 4... Shutter device, 6
... Cam plate, 7 ... Cam gear, 9 ... Actuator, 12 ... Magnetic rotor, 12a ... Rotating shaft, 17 ... Drawing iron pin, 18 ... Spring, 2
1... Adjustment screw, 24, 25... Shutter blade.

Claims

[Scope of Claim for Utility Model Registration] (1) Equipped with a program shutter built into the zoom lens barrel, in which exposure is controlled by an electromagnetic actuator that opens and closes multiple shutter blades in conjunction with each other. In a shutter device for a camera, an aperture cut iron pin is arranged near a magnet rotor of the actuator and can move forward and backward in the rotation axis direction of the magnet rotor, and an interlocking means for moving the aperture cut iron pin back and forth in accordance with the zoom position. 1. A shutter device comprising: a shutter speed controlled in accordance with a relative length of the diaphragm iron pin with respect to the magnet rotor. (2) The utility model registration request is characterized in that the interlocking means is provided with an adjusting means for finely adjusting in advance the relative length of the drawing iron pin with respect to the rotation axis direction of the magnet rotor. range(1)
The shutter device described in .