Focal-plane shutter and imaging device
AssigneeNidec Copal Corporation
InventorYusuke Suzuki
Life of this patent
Estimating the term…
Abstract
A focal-plane shutter for electronic front curtain scanning allows blades to move in two directions across the opening in a balanced manner, rather than in one direction. The focal-plane shutter for electronic front curtain scanning includes a base plate having an opening, a first blade movable in a first direction to close the opening, a second blade movable in a second direction to close the opening and opposite to the first direction in which the first blade is movable, a first urging member that urges the first blade in the first direction to close the opening, and a second urging member that urges the second blade in the second direction to close the opening.
Claims6
A focal-plane shutter for electronic front curtain scanning, the shutter comprising:
- a base plate having an opening;
- a first blade movable in a first direction to close the opening;
- a second blade movable in a second direction to close the opening, the second direction being opposite to the first direction in which the first blade is movable;
- a first urging member configured to urge the first blade in the first direction to close the opening;
- and
- a second urging member configured to urge the second blade in the second direction to close the opening, wherein
- in image capturing,
- from the state in which the opening is closed by the second blade, the second blade and the first blade move while leaving a gap for light to enter the opening,
- after the opening is closed by the first blade, the first blade and the second blade move while leaving a gap for light to enter the opening, and
- a scanning line of the electronic front curtain scanning moves within the gap.
Dependencies are inferred from the claim text.