Light control apparatus and optical apparatus
AssigneeCanon Kabushiki Kaisha
InventorShinichi Masuda
Life of this patent
Estimating the term…
Abstract
There is provided a light control apparatus that maintains the overall apparatus size small, increases the number of stop stages, and is suitable for both the shutter and stop actions. A light control apparatus includes a first actuator, a second actuator, a first light shielding member driven by the first actuator, and a second light shielding member driven by the second actuator, wherein in a stop adjusting action, the first and second actuators drive the first and second light shielding members and adjust an aperture formed by the first and second light shielding members, and wherein in a shutter action, the second actuator drives the second light-shielding member for a light shielding action.
Claims17
A light control apparatus comprising:
- a first actuator;
- a second actuator;
- a first light shielding member driven by said first actuator;
- and
- a second light shielding member driven by said second actuator,
- wherein in a stop adjusting action, said first and second actuators drive said first and second light shielding members and adjust an aperture formed by said first and second light shielding members, and
- wherein in a shutter action, said second actuator drives said second light-shielding member for a light shielding action.
A light control apparatus comprising:
- a first actuator;
- a second actuator;
- a first light shielding member driven by said first actuator;
- and
- a second light shielding member driven by said second actuator, and driven by said first light shielding member driven by said first actuator,
- wherein in a stop adjusting action, said first actuator drives said first and second light shielding members and adjusts an aperture formed by said first and second light shielding members, and
- wherein in a shutter action, said second actuator drives said second light-shielding member for a light shielding action.
An optical apparatus comprising:
- a first actuator;
- a second actuator;
- a first light shielding member driven by said first actuator;
- a second light shielding member driven by said second actuator;
- and
- an image-pickup device for photoelectrically converting a subject image that passes an aperture formed by said first and second light shielding members,
- wherein in a stop adjusting action, said first and second actuators drive said first and second light shielding members and adjust an aperture formed by said first and second light shielding members, and
- wherein in a shutter action, said second actuator drives said second light-shielding member for a light shielding action.
An optical apparatus comprising:
- a first actuator;
- a second actuator;
- a first light shielding member driven by said first actuator;
- a second light shielding member driven by said second actuator, and driven by said first light shielding member driven by said first actuator;
- and
- an image-pickup device for photoelectrically converting a subject image that passes an aperture formed by said first and second light shielding members,
- wherein in a stop adjusting action, said first actuator drives said first and second light shielding members and adjusts an aperture formed by said first and second light shielding members, and
- wherein in a shutter action, said second actuator drives said second light-shielding member for a light shielding action.
Dependencies are inferred from the claim text.