A camera module comprises: an AF driving part, a shake-correcting driving part, a first position detection part, a second position detection part, and a drive control part configured to perform driving control of the AF driving part based on detection results of the first position detection part and the second position detection part. The drive control part includes a correction part configured to correct the position of the AF movable part in the optical axis direction that is calculated based on the detection result of the first position detection part in accordance with preliminarily set correction data. The correction part corrects the detection result of the first position detection part in consideration of displacement of the AF movable part in the optical axis direction due to sway of the shake correction movable part.

An optical apparatus capable of adjusting a position of a lens with a simple configuration that enables miniaturization without deteriorating optical performance. Lens groups are arranged on an optical axis to be movable along the optical axis. A first shaft is arranged in parallel to the optical axis and has a fitting part fit in a predetermined lens group and a first fixing part. A support member rotatably supports the first shaft by holding the first fixing part. A center axis of the first fixing part and a center axis of the fitting part are eccentric. The first shaft is supported by the support member to be rotatable around the center axis of the first fixing part. The predetermined lens group is movable between an image pickup position on the optical axis and a retreat position that is separated from the optical axis by rotating around the first shaft.

An optical member driving mechanism is provided. The optical member driving mechanism includes a movable portion and a fixed portion. The movable portion includes a holder for holding an optical member with an optical axis. The movable portion is movable relative to the fixed portion. The fixed portion has a housing and a base. The housing is disposed on the base, and includes a top surface and a side surface. The top surface extends in a direction that is parallel to the optical axis. The side surface extends from an edge of the top surface in a direction that is not parallel to the optical axis. The side surface has a rectangular opening.

An optical member driving mechanism is provided. The optical member driving mechanism includes a movable portion and a fixed portion. The movable portion includes a holder for holding an optical member with an optical axis. The movable portion is movable relative to the fixed portion. The fixed portion has a housing and a base. The housing is disposed on the base, and includes a top surface and a side surface. The top surface extends in a direction that is parallel to the optical axis. The side surface extends from an edge of the top surface in a direction that is not parallel to the optical axis. The side surface has a rectangular opening.

A reflective element driving module includes a first reflective element, a second reflective element, and a driving assembly. The first reflective element has a first reflective surface, disposed to correspond to the incident light, wherein the light has an optical axis. The second reflective element has a second reflective surface, disposed to correspond to the light reflected by the first reflective element, and is movable relative to the first reflective element. The driving assembly is configured to drive the second reflective element to move relative to the first reflective element, wherein the first reflective surface and the second reflective surface face different directions.

A reflective element driving module includes a first reflective element, a second reflective element, and a driving assembly. The first reflective element has a first reflective surface, disposed to correspond to the incident light, wherein the light has an optical axis. The second reflective element has a second reflective surface, disposed to correspond to the light reflected by the first reflective element, and is movable relative to the first reflective element. The driving assembly is configured to drive the second reflective element to move relative to the first reflective element, wherein the first reflective surface and the second reflective surface face different directions.

An optical system includes a movable unit movable in a direction eccentric to an optical axis. The movable unit includes a resin layer and a lens cemented together and satisfies a predetermined condition.

An optical system includes a movable unit movable in a direction eccentric to an optical axis. The movable unit includes a resin layer and a lens cemented together and satisfies a predetermined condition.

An actuator assembly comprises: first (20) and second (10) parts, wherein a primary axis (P) is defined with reference to the second part; a plurality of lengths of shape-memory alloy wire (30) connected between the first and second parts, wherein the lengths of wire are configured, when selectively powered, to cause three-dimensional movement of the first part relative to the second part; and a mechanism configured, when the lengths of wire are unpowered, to hold the first part in at least one position and/or orientation relative to the second part against the force of gravity for any orientation of the second part.

An actuator assembly comprises: first (20) and second (10) parts, wherein a primary axis (P) is defined with reference to the second part; a plurality of lengths of shape-memory alloy wire (30) connected between the first and second parts, wherein the lengths of wire are configured, when selectively powered, to cause three-dimensional movement of the first part relative to the second part; and a mechanism configured, when the lengths of wire are unpowered, to hold the first part in at least one position and/or orientation relative to the second part against the force of gravity for any orientation of the second part.