Low profile tri-axis actuator for folded lens camera
Folded camera modules in which the camera module height is determined by a folded lens module diameter and by the lens module movement in a direction perpendicular to the lens optical axis, and dual-aperture cameras including such folded camera modules. A folded camera module includes OIS and AF actuators having dimensions smaller than the camera module height and therefore not adding to the camera module height.
1. A folded camera module having a respective folded camera module height and first and second ends, comprising:
a) a lens module carrying a lens having a first optical axis;
b) an image sensor positioned at the first end;
c) a first actuator positioned at a side of the camera module and operable to provide a first movement of the lens module in a first direction parallel to the first optical axis;
d) a second actuator positioned at the second end and operable to provide a second movement of the lens module in a second direction perpendicular to the first direction, wherein the folded camera module height is defined by a diameter of the lens module and by a range of the second movement;
e) a third actuator positioned at the second end of the camera module and operable to provide a third movement of the lens module in a third direction perpendicular to both the first and second directions; and
f) an optical path folding element (OPFE) configured to fold an optical path parallel to the second direction toward the first direction,
wherein the second and third movements are enabled by leaf springs attached to a static part of the folded camera module located between the OPFE and the image sensor.
2. The folded camera module of claim 1 , wherein an actuator dimension for each of the first, second and third actuators in the direction of the folded camera module height is smaller than the folded camera module height.
3. The folded camera module of claim 2 , further comprising a fourth actuator positioned at the second end of the camera module and operable to provide a fourth movement to avoid roll around the first optical axis, the fourth actuator having an actuator dimension in the direction of the camera height smaller than the camera height.
4. The folded camera module of claim 3 , wherein a fourth actuator dimension in the direction of the folded camera module height is smaller than the folded camera module height.
5. The folded camera module of claim 3 , further comprising an optical path folding element (OPFE) configured to fold an optical path parallel to the second direction toward the first direction.
6. The folded camera module of claim 5 , wherein the OPFE is a prism.
7. The folded camera module of claim 3 , wherein the first movement is enabled by a plurality of rolling balls engaged in a plurality of grooves formed in a member attached to the lens module.
8. The folded camera module of claim 7 , wherein the plurality of rolling balls and the plurality of grooves are dimensioned so as not to increase the folded camera module height.
9. The folded camera module of claim 3 , wherein the first movement is enabled by a plurality of leaf springs attached to the lens module.
10. The folded camera module of claim 9 , wherein the plurality of leaf springs is dimensioned so as not to increase the folded camera module height.
11. The folded camera module of claim 1 , wherein the first movement is enabled by a plurality of rolling balls engaged in a plurality of grooves formed in a member attached to the lens module.
12. The folded camera module of claim 11 , wherein the plurality of rolling balls and the plurality of grooves are dimensioned so as not to increase the folded camera module height.
13. The folded camera module of claim 1 , wherein the first movement is enabled by a plurality of leaf springs attached to the lens module.
14. The folded camera module of claim 13 , wherein the plurality of leaf springs is dimensioned so as not to increase the folded camera module height.
15. The folded camera module of claim 1 , wherein the OPFE is a prism.
16. The folded camera module of claim 15 , wherein the prism is fixed relative to the first, second and third actuators.
17. The folded camera module of claim 15 , wherein the lens module is rigidly attached to the prism, forming a lens-prism unit.
18. The folded camera module of claim 17 , wherein the prism is fixed relative to the first, second and third actuators.
19. The folded camera module of claim 1 , included with a second camera module in a dual-aperture camera.
20. The folded camera module of claim 19 , wherein the second camera module is an upright camera module with a second optical axis parallel to the second direction.