Patent ID: 8548313

Claim:
An aerial digital camera comprising: a housing; a lens adapter mounted on the housing and configured to receive a lens; a frame; an image sensor mounted on the frame; at least three flexure bearings connecting the frame and the housing, the flexure bearings allowing a displacement of the frame relative to the housing in a displacement direction parallel to a light receiving surface of the image sensor; a spring providing a biasing force between the housing and the frame oriented in the displacement direction; and an actuator configured to displace the frame relative to the housing against the biasing force of the spring, wherein the actuator comprises a motor, a cam rotatably supported on the housing and driven by the motor, and a cam follower engaging the cam, wherein the cam follower abuts against the frame, and wherein the cam and the cam follower include a ball bearing having an inner race and an outer race, wherein a center of the inner race is displaced in a radial direction of the inner race relative to an axis of rotation of the inner race.