Frame structure with raised regions to improve camera reliability
A camera may include an image sensor attached with a substrate configured to move relative to one or more lenses of the camera in one or more directions. The camera may include one or more actuators to control movement of the image sensor, which may include at least one magnet and at least one corresponding coil. The magnet of the actuators may be attached with the substrate, outside a perimeter of the substrate or on the substrate but close to the perimeter of the substrate. The magnet may cause the adjacent portion of the substrate to become cantilevered with only partial support. The camera may include a frame structure having one or more raised regions towards the magnet to reduce a stress on the cantilevered portion of the substrate, e.g., during a drop or shock event.
1. A system, comprising:
one or more lenses;
an image sensor attached with a substrate configured to move relative to the one or more lenses in one or more directions;
an actuator configured to implement movement of the image sensor, wherein the actuator includes:
at least one magnet attached with the substrate such that the at least one magnet moves with the image sensor; and
at least one coil; and
a frame structure stationary relative to the at least one magnet, wherein one or more portions of the frame structure protrude towards the at least one magnet to reduce a gap between the frame structure and the at least one magnet.
2. The system of claim 1 , further comprising a bearing structure configured to suspend the substrate from a base structure, wherein the frame structure is affixed with the base structure and positioned between the base structure and the at least one magnet attached with the substrate, and wherein one or more portions of the frame structure protrude towards the at least one magnet.
3. The system of claim 2 , wherein the bearing structure includes a first stage configured to move on a first group of the rolling elements to allow the image sensor to move relative to the one or more lenses in a first direction in parallel to an optical axis of the one or more lenses.
4. The system of claim 3 , wherein the plurality of stages of the bearing structure includes a second stage configured to move on a second group of the rolling elements to allow the image sensor to move relative to the one or more lenses in a second direction orthogonal to the optical axis of the one or more lenses.
5. The system of claim 4 , wherein the plurality of stages of the bearing structure includes a third stage suspended from the second stage via a third group of the rolling elements and configured to move on a third group of the rolling elements to allow the image sensor to move relative to the one or more lenses in a third direction orthogonal to the optical axis of the one or more lenses.
6. The system of claim 5 , wherein the substrate is affixed to the third stage of the bearing structure.
7. The system of claim 1 , wherein the frame structure is formed using one or more metal sheets.
8. The system of claim 7 , wherein the one or more protruding portions of the frame structure is formed using a stamping process.
9. The system of claim 1 , wherein the substrate includes at least one of a ceramic portion or an organic portion.
10. The system of claim 1 , further comprising a light folding element placed optically between the one or more lenses and the image sensor and configured to reflect light passing through the one or more lenses to the image sensor.
11. A device, comprising:
one or more processors;
memory storing program instructions executable by the one or more processors to control operation of a camera module; and
the camera module, comprising:
one or more lenses;
an image sensor attached with a substrate configured to move relative to the one or more lenses in one or more directions;
an actuator configured to implement movement of the image sensor,
wherein the actuator includes:
at least one magnet attached with the substrate such that the at least one magnet moves with the image sensor, and
at least one coil; and
a frame structure stationary relative to the at least one magnet, wherein one or more portions of the frame structure protrude towards the at least one magnet to reduce a gap between the frame structure and the at least one magnet.
12. The device of claim 11 , further comprising a bearing structure configured to suspend the substrate from a base structure, wherein the frame structure is affixed with the base structure and positioned between the base structure and the at least one magnet attached with the substrate, and wherein one or more portions of the frame structure protrude towards the at least one magnet.
13. The device of claim 12 , wherein the bearing structure includes a first stage configured to move on a first group of the rolling elements to allow the image sensor to move relative to the one or more lenses in a first direction in parallel to an optical axis of the one or more lenses.
14. The device of claim 13 , wherein the plurality of stages of the bearing structure includes a second stage configured to move on a second group of the rolling elements to allow the image sensor to move relative to the one or more lenses in a second direction orthogonal to the optical axis of the one or more lenses.
15. The device of claim 14 , wherein the plurality of stages of the bearing structure includes a third stage suspended from the second stage via a third group of the rolling elements and configured to move on a third group of the rolling elements to allow the image sensor to move relative to the one or more lenses in a third direction orthogonal to the optical axis of the one or more lenses.
16. The device of claim 15 , wherein the substrate is affixed to the third stage of the bearing structure.
17. The device of claim 11 , wherein the frame structure is formed using one or more metal sheets.
18. The device of claim 17 , wherein the one or more protruding portions of the frame structure is formed using a stamping process.
19. The device of claim 11 , wherein the substrate includes at least one of a ceramic portion or an organic portion.
20. The device of claim 11 , wherein the camera module further comprises a light folding element positioned optically between the one or more lenses and the image sensor and configured to reflect light passing through the one or more lenses to the image sensor.