Abstract: A rotating cylinder device includes a cylindrical belt having an axis line, several plate-shaped parts, several link mechanisms, and a cylindrical casing. The plate-shaped parts are disposed outside the belt and arranged symmetrically across the axis line. The link mechanisms are pivotally connected to the respective plate-shaped parts and each have a moving protrusion. The moving protrusions are adapted to move along a first direction parallel to the axis line. The cylindrical casing is adapted to rotate about the axis line and is coupled to the moving protrusions. When the cylindrical casing rotates about the axis line, the moving protrusions are driven to move along the first direction, and the plate-shaped parts are driven by the link mechanisms to move along a second direction perpendicular to the axis line, to contract the belt.

Abstract: A rotating cylinder device includes a cylindrical belt having an axis line, several plate-shaped parts, several link mechanisms, and a cylindrical casing. The plate-shaped parts are disposed outside the belt and arranged symmetrically across the axis line. The link mechanisms are pivotally connected to the respective plate-shaped parts and each have a moving protrusion. The moving protrusions are adapted to move along a first direction parallel to the axis line. The cylindrical casing is adapted to rotate about the axis line and is coupled to the moving protrusions. When the cylindrical casing rotates about the axis line, the moving protrusions are driven to move along the first direction, and the plate-shaped parts are driven by the link mechanisms to move along a second direction perpendicular to the axis line, to contract the belt.

Abstract: An image capture device includes a device body, a rotary support, a display, and a lens. The rotary support is rotatably connected to a bottom of the device body. The display is rotatably connected to the rotary support. The lens defines an optical axis, wherein the display lies on an imaginary plane when the display separates from the device body, and the optical axis extends in the imaginary plane. An image capturing method includes the steps of rotating a display of an image capture device; positioning the display with respect to a device body of the image capture device; adjusting a location and an orientation of the image capture device so that an imaginary plane on which the display lies can extend to a target object; and capturing an image of the target object by the image capture device.