Anti-shake apparatus
View Patent ↗An anti-shake apparatus for image stabilizing of a photographing apparatus comprises a movable unit and a controller. The movable unit is movable for an anti-shake operation. The controller controls the movable unit for the anti-shake operation, stops the anti-shake operation after an exposure time, moves the movable unit to a first position after the anti-shake operation, and holds the movable unit at the first position after the completion of a movement of the movable unit to the first position and until the photographing apparatus is set to a state where the next imaging operation can be performed. The first position is in a direction in which the movable unit would move according to the force of gravity, after the anti-shake operation is finished.
1. An anti-shake apparatus for image stabilizing of a photographing apparatus, comprising:
a mirror that performs a mirror-up operation and a mirror-down operation;
a movable unit that is movable for an anti-shake operation; and
a controller that controls said movable unit for said anti-shake operation, stops said anti-shake operation after an exposure time, moves said movable unit to a first position after said anti-shake operation, and holds said movable unit at said first position after the completion of a movement of said movable unit to said first position and until said photographing apparatus is set to a state where the next imaging operation can be performed;
said first position being in a direction in which said movable unit would move according to the force of gravity,
wherein a length of time of said movement of said movable unit to said first position is shorter than a length of time from the point when said anti-shake operation is finished to the point when said mirror-down operation is finished,
wherein said first position is somewhere at the end of the range of movement of said movable unit, and
wherein said first position is specified on the basis of a position of said movable unit after a release sequence operation commences and immediately before said anti-shake operation.
2. The anti-shake apparatus according to claim 1 , wherein said movement of said movable unit to said first position is completed at the point when said mirror-down operation finishes.
3. The anti-shake apparatus according to claim 1 , wherein said controller controls the movement of said movable unit, under a condition where a relationship between a distance of said movement and an elapse of time corresponding to said movement to said first position is represented by a sine waveform during a period beginning with the commencement of movement of said movable unit to said first position and ending with the completion of movement of said movable unit to said first position.
4. The anti-shake apparatus according to claim 1 , wherein said controller controls the movement of said movable unit to move at a decelerated, low rate of speed before finishing its movement to said first position.
5. The anti-shake apparatus according to claim 1 , further comprising a release switch;
wherein first position is a position of said movable unit after said release switch is set to an ON state, before said exposure time, and before said anti-shake operation.