A camera actuator disclosed to an embodiment includes a first housing, a prism unit disposed in the first housing, and a first driving portion tilting the prism unit in a first axis or a second axis, the first driving portion include a first magnet disposed on a region corresponding to a first outer surface of the prism unit; a second magnet disposed on a region corresponding to a second outer surface opposite to the first outer surface of the prism unit; and a third magnet disposed on a region corresponding to a third outer surface disposed between the first and second outer surfaces of the prism unit, the first and second magnets are spaced apart in a first direction, a length of the third magnet in the first direction may be 50% to 98% of a distance between the first and second magnets in the first direction.

A prism driving device includes a carrier for carrying a prism, a rotatable member supporting the carrier, a base supporting the rotatable member, a first driving unit used for driving the carrier to rotate around a first axis relative to the rotatable member, a second driving unit used for driving the rotatable member to rotate around a second axis relative to the base, and a plate spring unit located on a Y direction side of the carrier and the rotatable member. The first axis, the second axis and the Y direction are perpendicular with each other. The plate spring unit is connected between the carrier and the rotatable member to allow the carrier to rotate around the first axis. The plate spring unit is also connected between the rotatable member and the base to allow the rotatable member to rotate around the second axis.

A camera module includes: a first lens module disposed in a housing and including at least one lens; a reflective member configured to change a path of light toward the first lens module; an extension member configured to be moved together with the reflective member, and disposed between the reflective member and the first lens module; and a shake compensation actuator disposed in the extension member and configured to tilt the reflective member with respect to an axis perpendicular to an optical axis of the first lens module.

An optical reflecting assembly includes a reflective member, a reflective element holder and a structure component. The reflective member includes a reflective surface for folding a light. The reflective element holder includes an assembling surface correspondingly disposed to the reflective member. The structure component is made of a metal material and has a three-dimensional structure, at least one portion of the structure component is inserted in the reflective element holder, and the structure component includes a first supporting wall, a second supporting wall and at least one extending wall. The first supporting wall and the second supporting wall are bent to form a first bending line with an angle. The extending wall and the second supporting wall are bent to form an extending bending line being a non-closed line.

Rotation mechanisms for rotating a payload in two, first and second degrees of freedom (DOF), comprising a static base, a first rotation arm coupled mechanically to the static base through a first rotation joint and used for rotating the payload relative to the static base around a first rotation axis that passes through the first rotation joint, a second rotation arm coupled mechanically to the static base through a second rotation joint and used for rotating the payload relative to the static base around a second rotation axis that passes through the second rotation joint, and a follower member rigidly coupled to the payload and arranged to keep a constant distance from the second rotation arm, wherein the rotation of the first arm rotates the payload around the first DOF and the rotation of the second arm rotate the payload around the second DOF.

A parallel-driven binocular anti-shake assembly relates to the field of optical image stabilization technologies, including: symmetrically arranged left and right prism housings mounted in a rotation frame via rotating shaft bearings; a bridging connecting rod with two ends connected to the prism housings via bearings, thereby driving synchronous rotation of the two prism housings about their respective rotating shafts; left and right side walls of the rotation frame hinged to the outer frame via side bearings; an integrated circuit board integrating an inner shaft driving coil, an outer shaft driving coil, an inner shaft Hall element, an outer shaft Hall element, and a gyroscopic sensor; an inner shaft driving magnetic steel disposed at the middle of the connecting rod; an inner shaft sensing magnetic steel disposed on a sidewall of either the left or right prism housing; and an outer shaft magnetic steel disposed on the outer frame.

In one method, a display source aligned with an illumination prism assembly is displaced along a displacement axis to adjust the distance between the display source and a collimating prism assembly. The display source, the illumination prism assembly, and an illumination module are translationally moved in unison in a plane normal to the displacement axis. In another method, a component of an optical device is coupled to a mechanical assembly at a known orientation. The mechanical assembly has a test pattern at a known orientation. An image sensor is aligned with the test pattern, and the image sensor captures an image of the test pattern. The captured image is analyzed to determine an estimated orientation of the test pattern. An orientation parameter of the image sensor is adjusted based on a comparison between the known orientation of the test pattern and the estimated orientation of the test pattern.

Actuators for providing an extended two-degree of freedom rotation range to an optical path folding element (OPFE) such as a prism or mirror in mobile devices such as smartphones, comprising a yaw sub-assembly having a yaw rotation axis, a pitch sub-assembly carrying the OPFE, the pitch sub-assembly including a pivot rotation mechanism and having a pitch rotation axis; and a stationary sub-assembly, wherein the actuator is operative to rotate the OPFE in two rotation directions, a first rotation for yaw around the yaw rotation axis and a second rotation for pitch around the pitch rotation axis, and wherein the rotation for pitch includes rotation using the pivot rotation mechanism.