Actuator with relative gaps for driving electrodes and repulsion generation section

An actuator comprising:

• a movable section;
• a stationary section for supporting the movable section;
• a driving electrode portion for driving the movable section;
• a repulsion generation section for generating a repulsion acting between the movable section and the stationary section, and
• a hinge for linking the movable section and the stationary section,
• wherein, the driving electrode portion includes
• a first comb electrode provided in the movable section and
• a second comb electrode being provided in the stationary section and opposing the first comb electrode;
• and
• a portion of a gap between the movable section and the repulsion generation section is narrower than a gap between the first comb electrode and the second comb electrode along a direction which is parallel to a pivot axis of the movable section, and
• wherein at least a portion of the movable section has elasticity, and when the movable section comes into contact with the repulsion generation section, an elastic force is generated in a direction of separating the movable section from the repulsion generation section, and
• wherein the repulsion generation section extends across the entire length of the movable section along a direction perpendicular to a direction in which the hinge extends.