| 摘要 |
PURPOSE:To reduce the moving space of a shutter body by constituting the shutter body of plural shutter pieces, connecting a drive body to at least one shutter piece and installing a part engaged with other shutter pieces on some part of these shutter pieces. CONSTITUTION:The shutter pieces 10 and 11 of the shutter body 7 disconnect an optical path. When a motor 12 is driven by an action signal, the shutter piece 10 starts its upward moving, and is engaged with the engaged part of the shutter piece 11, which moves in the same direction. Then they abut on the projection 13a of a substrate 13 to stop, and at this time the optical path is in the completely opened state. Due to the termination of the action, the shutter piece 10 starts its downward moving by a spring 15 installed on a motor spindle 14, and is engaged with the engaged part of the shutter piece 11, which moves in the same direction. They abut on the projection 13b of the substrate 13 to stop and return to the state where they are inoperable.
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