An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed part, a movable part, a driving assembly, and a sensing assembly. The movable part moves relative to the fixed part. The driving assembly drives the movable part to move relative to the fixed part. The sensing assembly senses the movement of the movable part.

In an optical unit with a shake correction function, a first flexible printed board and a second flexible printed board may extend in a +X direction perpendicular to an optical axis from a chassis surrounding the outer circumference side of a movable body and a gimbal structure. A cover may house the chassis and bend portions of the first flexible printed board and the second flexible printed board. The cover may include an image-side cover and an object-side cover, and the first flexible printed board and the second flexible printed board may include securing portions that are secured to the image-side cover. The object-side cover may include a first cover covering the chassis and a second cover covering the first flexible printed board and the second flexible printed board. The first cover may include a cover portion covering the coupling position of the chassis and the second cover.

A camera module is provided. The camera module includes a housing including an inner space; a folded module including a reflective member reflecting light incident to the reflective member and changing a path of the light, and a moving holder to which the reflective member is mounted, wherein the folding module is disposed in the inner space and is movably supported on an inner wall of the housing; a lens module disposed adjacent to the folded module, and including a lens barrel including plural lenses aligned in an optical axis direction to allow light reflected from the reflective member to pass therethrough; and a damper including a support frame disposed between the folded module and the lens module in the housing, a first cushioning portion fixed to the support frame, and a second cushioning portion extended integrally from the first cushioning portion and spaced apart from the support frame.

An embodiment of the present invention provides a camera actuator comprising: a mover including an optical member for changing a path of incident light; a driving unit for moving the mover in a second direction or a first direction perpendicular to an optical axis direction; an output unit for outputting a control signal for moving the mover; a first position sensor for sensing position information in the second direction of the mover; an image sensor for receiving light having passed through the optical member to generate image information; and a calculation unit for calculating a rotational correction amount of the image information with reference to the optical axis direction with respect to the image information by using the position information in the second direction of the mover.

A reflecting module for optical image stabilization (OIS) includes a housing; a rotation holder provided in the housing and comprising a reflecting member; a rotation plate provided in the housing between an inner wall of the housing and the rotation holder so that the rotation holder is supported by the inner wall of the housing via the rotation plate; and a driving part configured to apply a driving force to the rotation holder to move the rotation holder.

A camera module includes a movable element; a lens coupled to the movable element; a first substrate fixed to the bottom surface of the movable element; an image sensor disposed on the first substrate; a second substrate disposed below the first substrate; and a wire for connecting the second substrate to the movable element. At least a part of the wire is made of a shape memory alloy.

An embodiment includes: a base; a circuit board which is disposed on the base and which includes first and second terminals; a housing disposed on the circuit board; a bobbin disposed in the housing; a first coil disposed on the bobbin; a sensing magnet disposed on the bobbin; a magnet disposed in the housing; a first position sensor which is disposed in the housing and which corresponds to the sensing magnet; a second coil disposed between the base and the magnet; and a second position sensor which is disposed on the circuit board and which includes a first sensor and a second sensor, wherein each of the first sensor and the second sensor is a driver integrated circuit including a hall sensor and a driver, a clock signal is provided to the first terminal of the circuit board, a data signal is provided to the second terminal of the circuit board, and the driver of each of the first position sensor, the first sensor, and the second sensor transmits/receives the clock signal through the first terminal of the circuit board, and transmits/receives the data signal in a time-division manner through the second terminal of the circuit board.

An optical unit may include a movable body having a lens and an imaging element; a fixed body configured to support the movable body; a gimbal mechanism configured to oscillatably support the movable body; and a shake correction drive mechanism configured to cause the movable body to oscillate with respect to the fixed body around the two axial lines. The shake correction drive mechanism may include an oscillating magnet, and an oscillating coil to generate an electromagnetic force within a magnetic field of the oscillating magnet. The gimbal mechanism may include an annular movable frame surrounding a periphery of the movable body, and four oscillation support points supporting the movable frame with respect to the movable body and the fixed body on the two axial lines. The movable frame may be arranged outwardly in a radial direction perpendicular to the optical axis from the shake correction drive mechanism.

The imaging apparatus comprises a retractable structure with active and inactive positions. An outermost lens group and a lens group actuator are movable along an optical axis. In the inactive position the lens group and the lens group actuator reside close to an image sensor. The lens group actuator is positioned to the same level as the image sensor. In the active position the outermost lens group and the lens group actuator are further from the image sensor along the optical axis. The retractable structure may protrude from the device, covering the imaging apparatus. In one example the structure is reversed, the image sensor protrudes from the device while the outermost lens group is fixed to the device body.

The imaging apparatus comprises a retractable structure with active and inactive positions. In the inactive position the lens group and the lens group actuator reside close to an image sensor. An activating actuator moves the lens group and at least one lens group actuator between active and inactive positions. The activating actuator comprises a movable ferromagnetic element and a fixed electromagnetic element. When an electric current is applied to the electromagnetic element, the ferromagnetic element moves to a predefined position. The retractable lens movement is in one embodiment bistable, for example a piece of ferromagnetic material holding the retractable element in place.