Camera module and electronic device

Abstract

A camera module includes a base, a first rolling element assembly, a first carrier, a second rolling element assembly, a second carrier, an optical path deflection element, and a first driving body. The first carrier is connected to the base via the first rolling element assembly. The second carrier is connected to the first carrier via the second rolling element assembly, and the second carrier rotates relative to the first carrier. The optical path deflection element is fixed to the second carrier. The first driving body includes a first driving magnet and a first driving coil. The first driving body drives the first carrier to rotate. The second carrier includes an attraction element that attracts the first driving magnet, causing both the first and second carriers to simultaneously contact the second rolling element. This reduces the weight of the camera module and improves driving efficiency.

Claims

1. A camera module, comprising: a base; a first rolling element group disposed on the base, comprising: at least three first rolling elements, a virtual circle passing through a center of each of the at least three first rolling elements, and a first axis passing through a center of the virtual circle; a first carrier connected to the base via the first rolling element group, the first rolling element group being disposed between the base and the first carrier, the first carrier rotating about the first axis; a second rolling element group disposed on the first carrier, comprising: at least two second rolling elements, a second axis passing through a center of each of the at least two second rolling elements, the second axis being perpendicular to the first axis; a second carrier connected to the first carrier via the second rolling element group, the second carrier rotating relative to the first carrier about the second axis; a light path deflecting element fixed to the second carrier, the light path deflecting element redirects light rays from the first axis to a third axis, the third axis being perpendicular to the second axis; and a first driving body, comprising: A first driving magnet is fixed to the first carrier; and a first driving coil is fixed to the base, wherein the first driving element drives the first carrier to rotate about the first axis. The second carrier includes an attraction element that attracts the first driving magnet, causing both the first carrier and the second carrier to simultaneously contact the second rolling element.

2. The camera module as claimed in claim 1, wherein the first driving magnet is a multi-pole magnet comprising: a first magnetic pole; a second magnetic pole, the first magnetic pole and the second magnetic pole being disposed adjacent to each other and facing the first driving coil; and a third magnetic pole being disposed corresponding to the attraction element, and the third magnetic pole being farther away from the first driving coil than the first magnetic pole and the second magnetic pole.

3. The camera module as claimed in claim 1, wherein the first drive coil is farther away from the optical path reversing element than the first drive magnet, and the attraction element is closer to the optical path reversing element than the first drive magnet.

4. The camera module as claimed in claim 1 further comprises: a second driving body, the second driving body including a second driving coil, the second driving coil being disposed corresponding to the attraction element, driving the second carrier to rotate about the second axis as the rotation axis.

5. The camera module as claimed in claim 4, wherein the attracting element is a multi-pole magnet comprising: a fourth magnetic pole; a fifth magnetic pole, the fourth magnetic pole being disposed adjacent to the fifth magnetic pole and facing the second drive coil; and a sixth magnetic pole being disposed corresponding to the first drive magnet, and the sixth magnetic pole being farther away from the second drive coil than the fourth magnetic pole and the fifth magnetic pole.

6. The camera module as claimed in claim 1, wherein the first driving magnet comprises: a first magnetic pole; and a second magnetic pole, the first magnetic pole and the second magnetic pole being disposed adjacent to each other and facing the first driving coil, the direction from the first magnetic pole to the second magnetic pole being defined as a first magnetization direction; wherein, The attracting element is a magnet with a second magnetization direction, which causes the attracting element to attract the first driving magnet; wherein the first magnetization direction is parallel to the second magnetization direction.

7. The camera module as claimed in claim 1, wherein the number of the at least three first rolling elements is at least four, and the at least four first rolling elements are each equidistant from the first axis.

8. The camera module as claimed in claim 1, wherein the base further includes a base magnet, the first axis passing through the base magnet; the first carrier includes a first magnetically conductive element, and the first magnetically conductive element is embedded in and exits the first carrier; wherein, The base magnet attracts the first magnetic conductive element, causing the first carrier and the base to simultaneously contact the first rolling element group.

9. The camera module of claim 1, wherein, in a cross-section passing through one of the at least three first rolling elements and parallel to the first axis, the at least three first rolling elements comprises: an upper contact point in contact with the first carrier; a lower contact point in contact with the base; an inner contact point closer to the first axis than the upper and lower contact points; and an outer contact point farther from the first axis than the upper and lower contact points; wherein, The inner contact point does not contact the first carrier or the base at the same time as the outer contact point.

10. The camera module as claimed in claim 9, wherein the lower contact point of each of the at least three first rolling elements defines a plane, wherein, The plane is perpendicular to the first axis.

11. The camera module as claimed in claim 10 further comprises: an imaging lens, the imaging lens comprising at least two lens groups; wherein, The first axis passes through at least one of the at least two mirror groups.

12. The camera module as claimed in claim 1, wherein the attraction element is embedded in the second carrier in an integral molding process.

13. The camera module as claimed in claim 1, wherein the first axis, the second axis, and the third axis are perpendicular to each other.

14. The camera module as claimed in claim 1, wherein the optical path deflection element includes a reflective surface connecting the first axis and the third axis; wherein, The first axis and the second axis intersect at the reflecting surface.

15. The camera module as claimed in claim 1, wherein the at least two second rolling elements are disposed between the attracting element and the first driving magnet.

16. The camera module of claim 1, wherein the second carrier further includes an assembly bump that protrudes from the second axis in a direction away from the optical path deflection element, and the attraction element is disposed on the assembly bump; the first carrier includes a receiving structure that receives the assembly bump, and the second rolling element group is disposed between the assembly bump and the receiving structure.

17. The camera module as claimed in claim 1, wherein the first driving body is symmetrically disposed on the opposite side of the optical path deflection element in the second axial direction; the attraction element is symmetrically disposed on the opposite side of the optical path deflection element in the second axial direction and is disposed corresponding to the first driving magnet of the first driving body.

18. An electronic device comprising: a camera module as claimed in claim 1, the camera module including an imaging lens and a photosensitive element, wherein the photosensitive element is disposed on an image side of the imaging lens.

19. A camera module, comprising: a lens group, a first axis passing through a center of the lens group; a light path deflection element disposed on an image side of the lens group, the light path deflection element causing light rays from the first axis to bend to a third axis; a base; a first rolling element group disposed on the base, comprising: at least three first rolling elements, the at least three first rolling elements being equidistant from the first axis; a first carrier connected to the base via the first rolling element group, the first carrier rotating about the first axis; a second rolling element group disposed on the first carrier, comprising: at least two second rolling elements, a second axis passing through a center of each of the at least two second rolling elements, the second axis being perpendicular to the first axis and perpendicular to the third axis; a second carrier connected to the first carrier via the second rolling element group, the second carrier rotating relative to the first carrier about the second axis, and the light path deflection element being fixed to the second carrier; and a first drive body, comprising: A first driving magnet is fixed to the first carrier; and a first driving coil is fixed to the base. The first driving element drives the first carrier to rotate about the first axis. The second carrier includes an attraction element that attracts the first driving magnet, causing both the first carrier and the second carrier to simultaneously contact the second rolling element.

20. A camera module, comprising: a lens group, a third axis passing through a center of the lens group; a light path deflecting element disposed on an object side of the lens group, the light path deflecting element redirecting light from a first axis to the third axis; a base; a first rolling element group, comprising: at least three first rolling elements, the at least three first rolling elements being equidistant from the first axis; a first carrier connected to the base via the first rolling element group, the first carrier rotating about the first axis; a second rolling element group disposed on the first carrier, comprising: at least two second rolling elements, a second axis passing through a center of each of the at least two second rolling elements, the second axis being perpendicular to the first axis and perpendicular to the third axis; a second carrier connected to the first carrier via the second rolling element group, the second carrier rotating relative to the first carrier about the second axis, and the light path deflecting element being fixed to the second carrier; and a first drive body, comprising: A first driving magnet is fixed to the first carrier; and a first driving coil is fixed to the base, driving the first carrier to rotate about the first axis. The second carrier includes an attraction element that attracts the first driving magnet, causing both the first carrier and the second carrier to simultaneously contact the second rolling element.

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