Integrated architecture for rotational actuation optical image stabilization
Various embodiments include an integrated architecture for an actuator arrangement of a camera system. Among other things, the integrated architecture may enable rotational actuation optical image stabilization (OIS). In various embodiments, the actuator arrangement for rotating a lens group together with an image sensor to provide OIS. According to various embodiments, the actuator arrangement may also be configured to move the lens group or the image sensor to provide autofocus (AF). Furthermore, the camera system may include a suspension arrangement to suspend the lens group and the image sensor and to allow motion enabled by the actuator arrangement.
1 . A camera, comprising:
a lens group;
an image sensor; and
an actuator arrangement, comprising:
an optical image stabilization (OIS) actuator, comprising:
OIS actuator components configured to enable OIS motion comprising rotation of the lens group and the image sensor together about multiple axes orthogonal to an optical axis of the camera; and
an autofocus (AF) actuator, comprising:
AF actuator components configured to enable AF motion comprising movement of the lens group or the image sensor in at least one direction parallel to the optical axis;
wherein the OIS actuator is at least partially integrated with the AF actuator in an integrated architecture where:
the OIS actuator and the AF actuator share at least one shared actuator component that is included in the OIS actuator components and the AF actuator components, wherein the at least one shared actuator component is used for enabling both OIS motion and AF motion, or
one or more of the OIS actuator components and one or more of the AF actuator components are mounted on a same component of the camera.
2 . The camera of claim 1 , further comprising:
an outer shield can that at least partially encases the camera;
wherein the camera does not include an inner shield can disposed between the outer shield can and the lens group.
3 . The camera of claim 1 , wherein the OIS actuator components and the AF actuator components are not separated from one another by a shield can.
4 . The camera of claim 1 , wherein the actuator arrangement comprises one or more voice coil motor (VCM) actuators.
5 . The camera of claim 1 , wherein:
the lens group comprises one or more lens elements that define the optical axis; and
the multiple axes about which the lens group and the image sensor can be rotated comprise:
a first axis orthogonal to the optical axis; and
a second axis orthogonal to the optical axis and orthogonal to the first axis.
6 . The camera of claim 5 , wherein, to provide AF motion, the AF actuator is configured to:
shift the lens group, relative to the image sensor, in the at least one direction parallel to the optical axis.
7 . The camera of claim 5 , wherein, to provide AF motion, the AF actuator is configured to:
shift the image sensor, relative to the lens group, in the at least one direction parallel to the optical axis.
8 . The camera of claim 1 , further comprising:
a ball bearing suspension arrangement comprising multiple stages that move on ball bearings to suspend the lens group and the image sensor and to allow motion enabled by the actuator arrangement.
9 . The camera of claim 1 , wherein:
the OIS actuator and the AF actuator comprise voice coil motor (VCM) actuators; and
the integrated architecture comprises:
the OIS actuator and the AF actuator sharing the at least one shared actuator component that is included in the OIS actuator components and the AF actuator components, wherein the at least one shared actuator component comprises at least one of a drive magnet or a drive coil of the VCM actuators.
10 . The camera of claim 1 , wherein:
the OIS actuator comprises an OIS VCM actuator that includes an OIS drive magnet and an OIS drive coil;
the AF actuator comprises an AF VCM actuator that includes an AF drive magnet and an AF drive coil; and
the integrated architecture comprising:
one or more of the OIS actuator components and one or more of the AF actuator components being mounted on a same component of the camera, wherein:
the one or more of the OIS actuator components comprise at least one of the OIS drive magnet or the OIS drive coil; and
the one or more of the AF actuator components comprise at least one of the AF drive magnet or the AF drive coil.
11 . A device, comprising:
one or more processors;
memory storing program instructions executable by the one or more processors to control operations of a camera; and
the camera, comprising:
a lens group;
an image sensor; and
an actuator arrangement, comprising:
an optical image stabilization (OIS) actuator, comprising:
OIS actuator components configured to enable OIS motion comprising rotation of the lens group and the image sensor together about multiple axes orthogonal to an optical axis of the camera; and
an autofocus (AF) actuator, comprising:
AF actuator components configured to enable AF motion comprising movement of the lens group or the image sensor in at least one direction parallel to the optical axis;
wherein the OIS actuator is at least partially integrated with the AF actuator in an integrated architecture comprising at least one of:
the OIS actuator and the AF actuator sharing at least one shared actuator component that is included in the OIS actuator components and the AF actuator components, wherein the at least one shared actuator component is used for enabling both OIS motion and AF motion, or
one or more of the OIS actuator components and one or more of the AF actuator components being mounted on a same component of the camera.
12 . The device of claim 11 , wherein the camera further comprises:
an outer shield can that at least partially encases the camera;
wherein the camera does not include an inner shield can disposed between the outer shield can and the lens group.
13 . The device of claim 11 , wherein the OIS actuator components and the AF actuator components are not separated from one another by a shield can.
14 . The device of claim 11 , wherein the actuator arrangement comprises one or more voice coil motor (VCM) actuators.
15 . The device of claim 11 , wherein, to provide AF motion, the AF actuator is configured to:
shift the lens group, relative to the image sensor, in the at least one direction parallel to the optical axis.
16 . The device of claim 11 , wherein, to provide AF motion, the AF actuator is configured to:
shift the image sensor, relative to the lens group, in the at least one direction parallel to the optical axis.
17 . The device of claim 11 , wherein the camera further comprises:
a ball bearing suspension arrangement comprising multiple stages that move on ball bearings to suspend the lens group and the image sensor and to allow motion enabled by the actuator arrangement.
18 . A system, comprising:
an actuator arrangement, comprising:
an optical image stabilization (OIS) actuator, comprising:
OIS actuator components configured to enable OIS motion comprising rotation of a lens group of a camera, together with an image sensor of a camera, about multiple axes orthogonal to an optical axis of the camera;
an autofocus (AF) actuator, comprising:
AF actuator components configured to enable AF motion comprising movement of the lens group or the image sensor in at least one direction parallel to the optical axis;
wherein the OIS actuator is at least partially integrated with the AF actuator in an integrated architecture comprising at least one of:
the OIS actuator and the AF actuator sharing at least one shared actuator component that is included in the OIS actuator components and the AF actuator components, wherein the at least one shared actuator component is used for enabling both OIS motion and AF motion, or
one or more of the OIS actuator components and one or more of the AF actuator components being mounted on a same component of the camera; and
a suspension arrangement that suspends the lens group and the image sensor and that allows motion enabled by the actuator arrangement.
19 . The system of claim 18 , wherein the OIS actuator and the AF actuator comprise voice coil motor (VCM) actuators.
20 . The system of claim 19 , wherein the suspension arrangement comprises:
a ball bearing suspension arrangement comprising multiple stages that move on ball bearings to suspend the lens group and the image sensor and to allow motion enabled by the VCM actuators.