Shutter apparatus, image sensing apparatus, and shutter control method
AssigneeCanon Kabushiki Kaisha
InventorsTaro Murakami, Hiroyuki Takahashi
Life of this patent
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Abstract
A shutter apparatus mounted in an image sensing apparatus, the shutter apparatus comprising: a blade member configured to open/close an opening through which light from an object passes, and control an aperture area of the opening; and a driving unit capable of first and second driving controls, the first driving control driving the blade member to serve as a stop, and the second driving control driving the blade member to serve as a shutter, wherein when the object is captured by an image sensor, the driving unit temporarily drives the blade member in an opening direction from a first position, to which the blade member is driven in a closing direction to serve as a stop, and then activates the blade member to a fully closing position.
Claims8
A shutter apparatus mounted in an image sensing apparatus, the shutter apparatus comprising:
- a blade member configured to open/close an opening through which light from an object passes, and control an aperture area of the opening;
- and
- a driving unit capable of first and second driving controls, wherein said first driving control drives said blade member to serve as a stop, and said second driving control drives said blade member to serve as a shutter,
- wherein when an image capturing is started in a state that the blade member is driven as the stop to a first position in a closing direction, said driving unit temporarily drives said blade member in an opening direction from the first position and then activates said blade member to a fully closing position.
An image sensing apparatus comprising:
- an image sensing unit;
- a blade member configured to open/close an opening through which light that enters said image sensing unit passes, and control an aperture area of the opening;
- a driving unit capable of first and second driving controls, wherein said first driving control drives said blade member to serve as a stop, and said second driving control drives said blade member to serve as a shutter;
- and
- a control unit configured to control said driving unit and said image sensing unit,
- wherein when an object is captured by said image sensing unit, said control unit starts exposure of said image sensing unit during a period from when said blade member starts to be driven in a closing direction after temporarily driving said blade member in an opening direction from a first position to which said blade member is driven in the closing direction to serve as a stop until said blade member reaches a fully closing position.
A shutter control method for a shutter apparatus including a blade member configured to open/close an opening through which light from an object passes, and control an aperture area of the opening, and a driving unit capable of first and second driving controls, wherein the first driving control drives the blade member to serve as a stop, and the second driving control drives the blade member to serve as a shutter, the method comprising:
- when an image capturing is started in a state that the blade member is driven as the stop to a first position in a closing direction, temporarily driving the blade member in an opening direction from a first position and then activating the blade member to a fully closing position.
A control method of an image sensing apparatus including an image sensing unit, a blade member configured to open/close an opening through which light that enters said image sensing unit passes, and control an aperture area of the opening, and a driving unit capable of first and second driving controls, wherein said first driving control drives said blade member to serve as a stop, and said second driving control drives said blade member to serve as a shutter, the method comprising:
- when an object is captured by said image sensing unit, controlling to start exposure of said image sensing unit during a period from when said blade member starts to be driven in a closing direction after temporarily driving said blade member in an opening direction from a first position to which said blade member is driven in the closing direction to serve as a stop until said blade member reaches a fully closing position.
Dependencies are inferred from the claim text.