A shutter assembly comprises a plurality of shutter blades movable between an open position and a closed position, and a plurality of drive mechanisms arranged circumferentially about the plurality of shutter blades for moving the plurality of shutter blades, wherein each of said drive mechanisms is stable in at least a first position and a second position.

Various embodiments disclosed herein include mechanical iris assemblies, as well as camera modules and devices that incorporate these mechanical iris assemblies. The mechanical iris assemblies described herein include a stator piece, a rotor piece, a set of blade elements, and an actuator arrangement. The actuator arrangement may include a voice coil actuator having at least one magnet carried by the stator piece and at least one coil carried by the rotor piece. The mechanical iris assembly includes a set of springs configured to carry current between the stator piece and the rotor piece to power the coil or coils carried by the rotor piece.

Various embodiments disclosed herein include mechanical iris assemblies, as well as camera modules and devices that incorporate these mechanical iris assemblies. The mechanical iris assemblies described herein include a stator piece, a rotor piece, a set of blade elements, and an actuator arrangement. The actuator arrangement may include a voice coil actuator having at least one magnet carried by the stator piece and at least one coil carried by the rotor piece. The mechanical iris assembly includes a set of springs configured to carry current between the stator piece and the rotor piece to power the coil or coils carried by the rotor piece.

A variable aperture module includes a blade assembly including movable blades, a positioning element including positioning structures and a driving part including a rotation element. The movable blades are disposed around an optical axis to form a light passable hole with adjustable size for different hole size states and each have an inner surface to define the contour of the light passable hole in each hole size state. The positioning structures correspond to the movable blades. The rotation element is rotatable with respect to the positioning element and is configured to rotate the movable blades to adjust a size of the light passable hole. There are matte structures disposed on each inner surface. Each matte structure is single structure extending towards the optical axis, such that at least part of the contour of the light passable hole has an undulating shape at least in several hole size states.

A variable aperture module includes a blade assembly including movable blades, a positioning element including positioning structures and a driving part including a rotation element. The movable blades are disposed around an optical axis to form a light passable hole with adjustable size for different hole size states and each have an inner surface to define the contour of the light passable hole in each hole size state. The positioning structures correspond to the movable blades. The rotation element is rotatable with respect to the positioning element and is configured to rotate the movable blades to adjust a size of the light passable hole. There are matte structures disposed on each inner surface. Each matte structure is single structure extending towards the optical axis, such that at least part of the contour of the light passable hole has an undulating shape at least in several hole size states.

A lens barrel, that can be made thinner, has a lens holding frame that holds a lens; a driving part that is held by the lens holding frame; aperture blades including a first engaging part and a second engaging part; a first member that engages with the first engaging part and can be rotated around an optical axis by the driving part; and a second member that engages with the second engaging part and is provided with the aperture blade arranged between the second member and the first member.

A lens barrel, that can be made thinner, has a lens holding frame that holds a lens; a driving part that is held by the lens holding frame; aperture blades including a first engaging part and a second engaging part; a first member that engages with the first engaging part and can be rotated around an optical axis by the driving part; and a second member that engages with the second engaging part and is provided with the aperture blade arranged between the second member and the first member.

A driving mechanism for moving an optical unit is provided, including a fixed part, a movable part, and a driving unit. The movable part is connected to the optical unit and the fixed part, and the movable part is movable relative to the fixed part. The driving unit is configured to drive the movable part and the optical unit to move relative to the fixed part.

A driving mechanism for moving an optical unit is provided, including a fixed part, a movable part, and a driving unit. The movable part is connected to the optical unit and the fixed part, and the movable part is movable relative to the fixed part. The driving unit is configured to drive the movable part and the optical unit to move relative to the fixed part.

A variable aperture module includes a blade assembly including movable blades, a positioning element including positioning structures and a driving part including a rotation element. The movable blades are disposed around an optical axis to form a light passable hole with adjustable size for different hole size states and each have an inner surface to define the contour of the light passable hole in each hole size state. The positioning structures correspond to the movable blades. The rotation element is rotatable with respect to the positioning element and is configured to rotate the movable blades to adjust a size of the light passable hole. There are matte structures disposed on each inner surface. Each matte structure is single structure extending towards the optical axis, such that at least part of the contour of the light passable hole has an undulating shape at least in several hole size states.