Patent ID: 8699867
Filing Date: 2014-04-15
Classification: G01C,G03B,H04N,Y10T

Abstract:
1. 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, a shutter, a control system operative to control the shutter and the actuator by triggering a shutter cycle at a first time, wherein the shutter cycle comprises opening the shutter, maintaining the shutter open during an exposure time and closing the shutter; and triggering an image sensor movement cycle at a second time, wherein the image sensor movement cycle comprises accelerating the image sensor and maintaining the image sensor at a constant sensor velocity during a time interval including the opening of the shutter and the closing of the shutter; wherein a difference between the first time and the second time is set based on a shutter delay and the constant sensor velocity, and wherein the shutter delay is defined by a time difference between a time when the shutter cycle is triggered and a time when the opening of the shutter is completed.