Camera module

A camera module, comprising:

• an OIS base;
• an OIS holder movably coupled to the OIS base in at least one direction perpendicular to the optical axis and fixedly coupled to an image sensor;
• a lens module, wherein the image sensor is configured to move in the at least one direction relative to the lens module;
• an OIS actuator, configured to shift the image sensor in the at least one direction perpendicular to the optical axis, comprising a magnet;
• an OIS guide interposed between the OIS base and the OIS holder;
• and
• a plurality of ball members, wherein one of the plurality of ball members is disposed between the OIS base and the OIS guide, and another of the plurality of ball members is disposed between the OIS guide and the OIS holder to make the OIS holder and the image sensor movable relative to the OIS base;
• and
• a yoke disposed at the OIS base and opposing the magnet in a direction parallel to the optical axis, wherein the OIS holder is configured to be pulled toward the OIS base by attractive force between the yoke and the magnet, and wherein the attractive force maintains the one of the plurality of ball members in contact with the OIS base and the OIS guide and maintains the another of the plurality of ball members in contact with the OIS guide and the OIS holder,
• wherein either one of the OIS base and the OIS holder includes a receiving portion extending in the direction parallel to the optical axis to receive a portion of the lens module, and
• wherein the one of the plurality of ball members is configured to roll in one direction among the at least one direction and another direction perpendicular to the optical axis and intersecting the at least one direction, and the another of the plurality of ball members is configured to roll in the other direction among the at least one direction and the another direction.

A camera module, comprising:

• an optical image stabilization (OIS) base;
• an OIS holder coupled to the OIS base;
• an image sensor attached to OIS holder and configured to move together with the OIS holder;
• an OIS actuator configured to move the OIS holder with respect to the OIS base in first and second directions perpendicular to a direction in which light is incident to the image sensor, wherein the OIS actuator includes a first coil and a first magnet opposing each other in the first direction perpendicular to an optical axis;
• an OIS guide interposed between the OIS base and the OIS holder;
• a plurality of ball members, wherein one of the plurality of ball members is disposed between the OIS base and the OIS guide, and another of the plurality of ball members is disposed between the OIS guide and the OIS holder to make the OIS holder and the image sensor movable relative to the OIS base;
• an auto focus (AF) carrier, movably coupled to an AF base, accommodating a lens module, wherein the image sensor is configured to move in the first and second directions relative to the lens module;
• and
• a yoke disposed at the OIS base and opposing the first magnet in a third direction parallel to the optical axis, wherein the OIS holder is configured to be pulled toward the OIS base by attractive force between the yoke and the first magnet, and wherein the attractive force maintains the one of the plurality of ball members in contact with the OIS base and the OIS guide and maintains the another of the plurality of ball members in contact with the OIS guide and the OIS holder,
• wherein the first coil is disposed at one of the OIS holder and the OIS base, and the first magnet is disposed at the other of the OIS holder and the OIS base, and
• wherein the one of the plurality of ball members is configured to roll in one direction among the first direction and the second direction, and the another of the plurality of ball members is configured to roll in the other direction among the first direction and the second direction.