A blade driving device having a base plate with an opening for an optical path; first and second blades, at different locations on the base plate, and each rotate to open/close the opening. A first magnet secured to the first blade; a second magnet secured to the second blade; a yoke secured on the base plate; and a first and second coil coiled on the yoke. The yoke has a first magnetic pole portion adjacent to the first magnet, a second magnetic pole portion adjacent to the second magnet, and connecting portions, connecting the first magnetic pole portion and the second magnetic pole portion. The first magnetic pole portion and the second magnetic pole portion have, respectively, adjacent pieces and adjacent to the corresponding magnets, and extending portions and continuous with the adjacent pieces and provided extending in a direction perpendicular to the blade supporting face of the base plate.

A blade driving device having a base plate with an opening for an optical path; first and second blades, at different locations on the base plate, and each rotate to open/close the opening. A first magnet secured to the first blade; a second magnet secured to the second blade; a yoke secured on the base plate; and a first and second coil coiled on the yoke. The yoke has a first magnetic pole portion adjacent to the first magnet, a second magnetic pole portion adjacent to the second magnet, and connecting portions, connecting the first magnetic pole portion and the second magnetic pole portion. The first magnetic pole portion and the second magnetic pole portion have, respectively, adjacent pieces and adjacent to the corresponding magnets, and extending portions and continuous with the adjacent pieces and provided extending in a direction perpendicular to the blade supporting face of the base plate.

A mobile device with variable aperture function includes two driving members, which deformation and retraction can be controlled to cause movement of a light hole of a movable aperture sheet towards a camera lens, where the amount of light entering into the camera lens is determined by the light hole of the movable aperture sheet and when the light hole in the movable aperture sheet moves away from the camera lens, the amount of light entering into the camera lens is determined by the camera lens itself, thereby varying the amount of light entering into the camera lens and eliminating the fixed amount of light due to the fixed aperture of the prior art mobile device and permitting miniaturization of the present mobile device.

A mobile device with variable aperture function includes two driving members, which deformation and retraction can be controlled to cause movement of a light hole of a movable aperture sheet towards a camera lens, where the amount of light entering into the camera lens is determined by the light hole of the movable aperture sheet and when the light hole in the movable aperture sheet moves away from the camera lens, the amount of light entering into the camera lens is determined by the camera lens itself, thereby varying the amount of light entering into the camera lens and eliminating the fixed amount of light due to the fixed aperture of the prior art mobile device and permitting miniaturization of the present mobile device.

A shutter apparatus includes a shutter base having an opening, a light shield configured to reciprocate between a closed state that closes the opening and an open state that opens the opening, a motor, a cam member configured to move the light shield when the cam member is rotated by the motor, and a restricting member configured to contact the cam member and to restrict the cam member from rotating in a first direction and in a second direction different from the first direction, the restricting member being rotatable and including a rotary damper engaged with the cam member. The restricting member is located at different positions in a rotating direction between when the restricting member restricts the cam member from rotating in the first direction and when the restricting member restricts the cam member from rotating in the second direction.

To provide a blade drive device capable of suppressing variations in movement speed of blades at the time of continuous operation and shortening the operation interval of blades. A blade drive device 10 includes a bed plate 11 having an opening 12, a blade receiving plate 15 arranged so as to face the bed plate 11, a plurality of blades 31b to 34b provided between the bed plate 11 and the blade receiving plate 15, which are expanded in a state where the opening 12 is closed and are housed while overlapping one another in a state where the opening 12 is opened and a regulating member 80 having an abutting surface 82 on which side edge portions 31b1 to 34b1 of the blades 31b to 34b abut when the blades are housed. The abutting surface 82 is an inclined surface 83 inclined to the bed plate 11 side as it goes from the bed plate 11 side to the blade receiving plate 15 side.

To provide a blade drive device capable of suppressing variations in movement speed of blades at the time of continuous operation and shortening the operation interval of blades. A blade drive device 10 includes a bed plate 11 having an opening 12, a blade receiving plate 15 arranged so as to face the bed plate 11, a plurality of blades 31b to 34b provided between the bed plate 11 and the blade receiving plate 15, which are expanded in a state where the opening 12 is closed and are housed while overlapping one another in a state where the opening 12 is opened and a regulating member 80 having an abutting surface 82 on which side edge portions 31b1 to 34b1 of the blades 31b to 34b abut when the blades are housed. The abutting surface 82 is an inclined surface 83 inclined to the bed plate 11 side as it goes from the bed plate 11 side to the blade receiving plate 15 side.

An image sensor assembly can include a lens assembly that includes a lens housing and a lens barrel disposed around the lens housing. The image sensor assembly can also include a socket. The socket can include a socket body having a plurality of socket fingers that allow the socket body to transition between a deflected state and a non-deflected state.

A focal plane shutter is provided with a switching mechanism having an electromagnet and a stopping member. The stopping member is provided with an engaging portion able to lock an engagement portion provided in a first driving member for a leading edge, and an operating portion wherein a direction of a force, in relation to the electromagnet, switches, in accordance with switching between an application and removal of an electric current in a single direction to the electromagnet, so as to move the engaging portion to a position wherein it is able to release locking of the engagement portion when the electric current is applied, and to move the engaging portion to a position wherein it is able to lock the engagement portion when the electric current is removed.

A focal plane shutter is provided with a switching mechanism having an electromagnet and a stopping member. The stopping member is provided with an engaging portion able to lock an engagement portion provided in a first driving member for a leading edge, and an operating portion wherein a direction of a force, in relation to the electromagnet, switches, in accordance with switching between an application and removal of an electric current in a single direction to the electromagnet, so as to move the engaging portion to a position wherein it is able to release locking of the engagement portion when the electric current is applied, and to move the engaging portion to a position wherein it is able to lock the engagement portion when the electric current is removed.