Control apparatus, rotationally driving apparatus, control method, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorYasufumi Yamamoto
Life of this patent
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Abstract
A control apparatus is configured to control a rotationally driving apparatus that includes a rotationally driving unit configured to rotate a movable unit including an optical system relative to a support unit. The control apparatus includes a memory storing instructions, and a processor configured to execute the instructions to acquire an optical state of the optical system, determine a driving range based on a margin angle and a rotation angle which is an angle from an initial position to a position where the movable unit interferes with the support unit, and control the rotationally driving unit using the driving range. The margin angle is changed according to the optical state.
Claims12
A control apparatus configured to control a rotationally driving apparatus that includes a rotationally driving unit configured to rotate a movable unit including an optical system relative to a support unit, the control apparatus comprising:
- a memory storing instructions;
- and
- a processor configured to execute the instructions to:
- acquire an optical state of the optical system,
- determine a driving range based on a margin angle and a rotation angle which is an angle from an initial position to a position where the movable unit interferes with the support unit, and
- control the rotationally driving unit using the driving range,
- wherein the margin angle is changed according to the optical state,
- wherein the movable unit can change between a first state and a second state according to the optical state,
- wherein a distance between a center of gravity of the movable unit and a rotation center position of the rotationally driving unit when viewed from a direction parallel to a rotation axis of the rotationally driving unit in the second state is longer than that in the first state,
- wherein the margin angle in the first state is smaller than the margin angle in the second state
- wherein the first state is a state in which the center of gravity and the rotation center position coincide with each other when viewed from the direction parallel to the rotation axis, and
- wherein the second state is a state in which the center of gravity is separated from the rotation center position when viewed from the direction parallel to the rotation axis.
A rotationally driving apparatus comprising:
- a control apparatus configured to control the rotationally driving apparatus;
- a support unit;
- a movable unit including an optical system;
- and
- a rotationally driving unit configured to rotate the movable unit relative to the support unit,
- wherein the control apparatus includes:
- a memory storing instructions;
- and
- a processor configured to execute the instructions to:
- acquire an optical state of the optical system,
- determine a driving range based on a margin angle and a rotation angle which is an angle from an initial position to a position where the movable unit interferes with the support unit, and
- control the rotationally driving unit using the driving range,
- wherein the margin angle is changed according to the optical state
- wherein the movable unit can change between a first state and a second state according to the optical state,
- wherein a distance between a center of gravity of the movable unit and a rotation center position of the rotationally driving unit when viewed from a direction parallel to a rotation axis of the rotationally driving unit in the second state is longer than that in the first state,
- wherein the margin angle in the first state is smaller than the margin angle in the second state,
- wherein the first state is a state in which the center of gravity and the rotation center position coincide with each other when viewed from the direction parallel to the rotation axis, and
- wherein the second state is a state in which the center of gravity is separated from the rotation center position when viewed from the direction parallel to the rotation axis.
A control method configured to control a rotationally driving apparatus that includes a rotationally driving unit configured to rotate a movable unit including an optical system relative to a support unit, the control method comprising the steps of:
- acquiring an optical state of the optical system;
- determining a driving range based on a margin angle and a rotation angle which is an angle from an initial position to a position where the movable unit interferes with the support unit;
- and
- controlling the rotationally driving unit using the driving range,
- wherein the margin angle is changed according to the optical state,
- wherein the movable unit can change between a first state and a second state according to the optical state,
- wherein a distance between a center of gravity of the movable unit and a rotation center position of the rotationally driving unit when viewed from a direction parallel to a rotation axis of the rotationally driving unit in the second state is longer than that in the first state,
- wherein the margin angle in the first state is smaller than the margin angle in the second state,
- wherein the first state is a state in which the center of gravity and the rotation center position coincide with each other when viewed from the direction parallel to the rotation axis, and
- wherein the second state is a state in which the center of gravity is separated from the rotation center position when viewed from the direction parallel to the rotation axis.
Dependencies are inferred from the claim text.