Optical device
First Claim
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1. An optical device comprising:
- a lens holder that holds a lens and is movable in the optical-axis direction of the lens; and
an actuator that moves the lens holder in the optical-axis direction, the actuator including an actuator element composed of an electroactive polymer, an actuator-element holder that holds the actuator element, a mechanism that applies prestrain to the actuator element, and a connecting member that connects the lens holder and the actuator, whereina connecting portion of the connecting member is disposed adjacent to the side surface of the actuator element, andwherein the prestrain to the actuator element is applied in a direction to which the lens holder moves.
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Abstract
An optical device includes a lens holder that holds a lens and is movable in the optical-axis direction of the lens, and an actuator that moves the lens holder in the optical-axis direction. The actuator includes an actuator element composed of an electroactive polymer, an actuator-element holder that holds the actuator element, a mechanism that applies prestrain to the actuator element, and a connecting member that connects the lens holder and the actuator. Herein, a connecting portion of the connecting member is disposed adjacent to the side surface of the actuator.
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Citations
6 Claims
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1. An optical device comprising:
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a lens holder that holds a lens and is movable in the optical-axis direction of the lens; and an actuator that moves the lens holder in the optical-axis direction, the actuator including an actuator element composed of an electroactive polymer, an actuator-element holder that holds the actuator element, a mechanism that applies prestrain to the actuator element, and a connecting member that connects the lens holder and the actuator, wherein a connecting portion of the connecting member is disposed adjacent to the side surface of the actuator element, and wherein the prestrain to the actuator element is applied in a direction to which the lens holder moves. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification