Electronic device and image capturing apparatus
AssigneeCanon Kabushiki Kaisha
InventorTaro Fuchigami
Life of this patent
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Abstract
An electronic device includes a base member, a reference member fixed to the base member, an image sensor, a holding member holding the image sensor and being held by the base member such that a distance from the reference member to the image sensor is changeable, a biasing member generating a first force that biases the holding member in a direction in which the distance increases, and a correction member providing, to the holding member, a second force acting against the first force. The second force changes due to deformation of the correction member depending on its temperature.
Claims24
An electronic device comprising:
- a base member;
- a reference member fixed to the base member;
- an image sensor;
- a holding member holding the image sensor and being held by the base member such that a distance from the reference member to the image sensor is changeable;
- a biasing member generating a first force that biases the holding member in a direction in which the distance increases;
- and
- a correction member providing, to the holding member, a second force acting against the first force,
- wherein the second force changes due to deformation of the correction member depending on its temperature,
- wherein the correction member and biasing member each have a spring constant, and
- the spring constant of the correction member is greater than that of the biasing member.
An electronic device comprising:
- a base member;
- a reference member fixed to the base member;
- an image sensor;
- a holding member holding the image sensor and being held by the base member such that a distance from the reference member to the image sensor is changeable;
- a biasing member generating a first force that biases the holding member in a direction in which the distance increases;
- and
- a correction member providing, to the holding member, a second force acting against the first force,
- wherein the second force changes due to deformation of the correction member depending on its temperature,
- wherein the correction member is formed of bimetal, and
- the correction member deforms such that its height in a direction of the second force changes depending on changes in the temperature.
An electronic device comprising:
- a base member;
- a reference member fixed to the base member;
- an image sensor;
- a holding member holding the image sensor and being held by the base member such that a distance from the reference member to the image sensor is changeable;
- a biasing member generating a first force that biases the holding member in a direction in which the distance increases;
- and
- a correction member providing, to the holding member, a second force acting against the first force,
- wherein the second force changes due to deformation of the correction member depending on its temperature,
- wherein the correction member is formed of shape memory alloy, and
- the correction member deforms when the temperature is higher than a transformation temperature of the shape memory alloy into a shape generating the second force greater than that when the temperature is equal to or lower than the transformation temperature.
An image capturing apparatus comprising:
- a base member;
- a mount that is fixed to the base member and to which a lens unit is detachably attachable;
- an image sensor;
- a holding member holding the image sensor and being held by the base member such that a distance from the mount to the image sensor in an optical axis direction is changeable;
- a retaining member used for attaching the holding member to the base member;
- a biasing member generating a first force that biases the holding member in a direction in which the distance increases;
- and
- a correction member providing, to the holding member, a second force acting against the first force,
- wherein an elastic modulus of the correction member is greater than that of the biasing member, and
- the correction member is disposed between the holding member and the retaining member.
Dependencies are inferred from the claim text.