Optical apparatus, image pickup apparatus, control method, control apparatus, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorFUYA MIZUOCHI
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Abstract
An optical apparatus may include a first optical element movable within a first range in an optical axis direction, a second optical element movable within a second range in the optical axis direction, a first stepping motor configured to move the first optical element, a second stepping motor configured to move the second optical element, one or more memories storing instructions, and one or more processors that, upon execution of the instructions, operate to control the first stepping motor and the second stepping motor by switching between open-loop control and feedback control. A part of each of the first range and the second range overlaps each other in the optical axis direction.
Claims20
An optical apparatus comprising:
- a first optical element movable within a first range in an optical axis direction;
- a second optical element movable within a second range in the optical axis direction;
- a first stepping motor configured to move the first optical element;
- a second stepping motor configured to move the second optical element;
- one or more memories storing instructions;
- and
- one or more processors that, upon execution of the instructions, operate to control the first stepping motor and the second stepping motor by switching between open-loop control and feedback control,
- wherein a part of each of the first range and the second range overlaps each other in the optical axis direction.
A method for controlling an optical apparatus having a first optical element movable within a first range in an optical axis direction, and a second optical element movable within a second range in the optical axis direction, the method comprising:
- controlling a first stepping motor configured to move the first optical element by switching between open-loop control and feedback control,
- controlling a second stepping motor configured to move the second optical element by switching between the open-loop control and the feedback control;
- wherein a part of each of the first range and the second range overlaps each other in the optical axis direction.
A control apparatus comprising:
- one or more memories storing instructions;
- and
- one or more processors that, upon execution of the instructions, operate to control a first stepping motor configured to move a first optical element that is movable within a first range in an optical axis direction and a second stepping motor configured to move a second optical element that is movable within a second range in the optical axis direction, by switching between open-loop control and feedback control,
- wherein a part of each of the first range and the second range overlaps each other in the optical axis direction.
Dependencies are inferred from the claim text.