A lens apparatus detachably attached to an image pickup apparatus body includes a controller configured to perform communication with the image pickup apparatus body with respect to driving of an optical member, wherein the controller is configured to transmit, based on first information for identifying the image pickup apparatus body transmitted from the image pickup apparatus body, second information for identifying the lens apparatus to the image pickup apparatus body, and transmit, based on third information for identifying the image pickup apparatus body transmitted from the image pickup apparatus body after transmission of the second information, fourth information for identifying the lens apparatus to the image pickup apparatus body.

A camera module includes: a housing; a first lens module movably disposed in the housing in an optical axis direction; a folded module including a reflective member configured to change a direction of light incident into the housing toward the first lens module; and a first damper coupled to the first lens module, and configured to alleviate impacts between the housing and the first lens module.

A camera module includes: an optical imaging system including a frontmost lens disposed closest to an object side, a rearmost lens disposed closest to an imaging plane, and at least one middle lens disposed between the frontmost lens and the rearmost lens. An image-side surface of the rearmost lens is concave and an inflection point is formed on the image-side surface of the rearmost lens. 0.2 < D/TTL is satisfied, D being a shortest distance between the rearmost lens and the imaging plane, and TTL being a distance from an object-side surface of the frontmost lens to the imaging plane.

An optical system includes, in order from an object side to an image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit having a positive refractive power. During image stabilization, the second lens unit is moved in a direction including a component in a direction orthogonal to an optical axis of the optical system, and the first lens unit and the third lens unit are fixed. A predetermined condition is satisfied.

An optical system includes, in order from an object side to an image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit having a positive refractive power. During image stabilization, the second lens unit is moved in a direction including a component in a direction orthogonal to an optical axis of the optical system, and the first lens unit and the third lens unit are fixed. A predetermined condition is satisfied.

Folded digital camera comprising a lens having a lens optical axis, an image sensor and first and second optical path folding elements (OPFEs), in which the second OPFE is closest to the image sensor, wherein the lens is operative to move in a first direction substantially parallel to the lens optical axis and in a second direction substantially perpendicular to first and second optical paths, wherein the second OPFE is operative to move in the first direction, and wherein the combined motion of the lens and of the second OPFE is operative to provide focus and to compensate for tilts of the camera around the first and second directions.

An actuator assembly (4001) includes a first part (4002), a second part (4004), a bearing arrangement (4003) and a drive arrangement (4005). The bearing arrangement (4003) includes first to fourth flexures (40151, 40152, 40153, 40154) arranged about a primary axis (4009) passing through the actuator assembly (4001). The bearing arrangement (4003) supports the second part (4004) on the first part (4002). The second part (4004) is tiltable about first and/or second axes (4011, 4012) which are not parallel and which are perpendicular to the primary axis (4009). The drive arrangement (4005) includes four lengths of shape memory alloy wire (40101, 40102, 40103, 40104). The four lengths of shape memory alloy wire (40101, 40102, 40103, 40104) are coupled to the second part (4004) and to the first part (4002). The bearing 15 arrangement (4003) is configured to convert lateral force(s) normal to the primary axis (4009) generated by the drive arrangement (4005) into tilting of the second part (4004) about the first and/or second axes (4011, 4012). Each of the first to fourth flexures (40151, 40152, 40153, 40154) has a first end (4016) connected to the first part (4002) and a second end (4017) connected to the second part (4004). Each of the first to fourth flexures (40151, 40152, 40153, 40154) includes a feature (1016) configured to increase a first compliance of that flexure (40151, 40152, 40153, 40154) to displacement of the respective second end (4017) towards the respective first end (4016). The first compliance is less than a second compliance of that flexure (40151, 40152, 40153, 40154) to 25 displacement of the respective second end (4017) parallel to the primary axis (4009).

Actuators for carrying and actuating a lens having a first optical axis, the lens receiving light folded from a second optical axis substantially perpendicular to the first optical axis, comprising first and second VCM engines coupled to the lens and first and second linear ball-guided rails operative to create movement of the lens in two substantially orthogonal directions upon actuation by respective VCM engines.

A lens position adjustment device includes a lens holder, a first shape memory alloy (SMA) wire and a second SMA wire. The lens holder holds a lens. The first SMA wire is configured to move the lens holder in a first direction along an optical axis of lens. The second SMA wire is configured to move the lens holder in a second direction along the optical axis. The second direction is opposite to the first direction. The lens holder is moved in the first or second direction along the optical axis through energizing the first SMA wire and the second SMA wire and controlling a force that moves the lens holder.

A zoom lens consists of, in order from an object side to an image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a rear group including one or more lens units. Each distance between adjacent lens units changes during zooming. The rear group includes a focus lens unit having a positive refractive power that moves from the image side to the object side during focusing from an infinite distance object to a close distance object. A lens closest to an object in the focus lens unit has a shape with a concave surface on the object side. The following inequalities are satisfied.

1.20<fLP/fL2<3.20

−3.00<fL1/fL2<−0.85

fLP represents a focal length of the focus lens unit, fL1 represents a focal length of the first lens unit, and fL2 represents a focal length of the second lens unit.