Optical devices for tilt in camera systems
Aspects of the present disclosure generally relate to optical devices and related methods that facilitate tilt in camera systems, such as tilt of a lens. In one example, an optical device includes a lens, an image sensor disposed below the lens, a plurality of magnets disposed about the lens, and a plurality of: (1) vertical coil structures coiled in one or more vertical planes and (2) horizontal coil structures coiled in one or more horizontal planes. When power is applied, the coil structures can generate magnetic fields that, in the presence of the magnets, cause relative movement of the coil structures and associated structures. The plurality of vertical coil structures are configured to horizontally move the lens. The plurality of horizontal coil structures are configured to tilt the lens when differing electrical power is applied to at least two of the plurality of horizontal coil structures.
1. An optical device, comprising:
a base defining an X-Y plane extending parallel to the base and a Z-axis extending perpendicularly to the X-Y plane;
a lens;
an image sensor disposed below the lens along the Z-axis;
a plurality of magnets disposed about the lens;
a plurality of vertical coil structures coiled in one or more vertical planes extending parallel to the Z-axis; and
a plurality of horizontal coil structures coiled in one or more horizontal planes to tilt the lens relative to the X-Y plane when differing electrical power is applied to at least two of the plurality of horizontal coil structures, each of the horizontal planes oriented perpendicularly to the one or more vertical planes;
wherein:
a first portion of each horizontal coil structure of the plurality of horizontal coil structures is aligned vertically under a lower surface of a respective magnet of the plurality of magnets along the Z-axis,
a second portion of each horizontal coil structure is aligned inwardly of an inner surface of the respective magnet or outwardly of an outer surface of the respective magnet along the X-Y plane, and
a center of each horizontal coil structure is aligned vertically under the inner surface or the outer surface of the respective magnet along the Z-axis.
2. The optical device of claim 1 , further comprising a second plurality of horizontal coil structures coiled in one or more second horizontal planes, wherein each second horizontal coil structure of the second plurality of horizontal coil structures is disposed at least partially above an upper surface of the respective magnet of the plurality of magnets.
3. The optical device of claim 1 , wherein each vertical coil structure of the plurality of vertical coil structures is disposed inwardly of the inner surface of a respective magnet of the plurality of magnets.
4. The optical device of claim 1 , wherein each vertical coil structure of the plurality of vertical coil structures is disposed outwardly of the outer surface of a respective magnet of the plurality of magnets.
5. The optical device of claim 1 , wherein the plurality of magnets are disposed at corners of a pattern or at sides of the pattern, wherein the pattern is a square pattern or a triangular pattern.
6. The optical device of claim 1 , wherein a surface of each magnet of the plurality of magnets faces a respective horizontal coil structure of the plurality of horizontal coil structures, the surface of each magnet includes a first surface area, and the respective horizontal coil structure includes a second surface area facing the surface of the magnet, wherein the second surface area is a ratio of the first surface area, and the ratio is within a range of 0.8 to 1.2.
7. The optical device of claim 1 , wherein the lens, the plurality of vertical coil structures, and the plurality of horizontal coil structures are coupled to a suspendable structure that is magnetically suspendable.
8. The optical device of claim 1 , wherein the image sensor, the plurality of vertical coil structures, and the plurality of horizontal coil structures are coupled to a suspendable structure that is magnetically suspendable.
9. A camera system comprising the optical device of claim 1 .
10. An optical device, comprising:
a base defining an X-Y plane extending parallel to the base and a Z-axis extending perpendicularly to the X-Y plane;
a lens;
an image sensor disposed below the lens along the Z-axis;
a plurality of magnets disposed about the lens;
a plurality of vertical coil structures coiled in one or more vertical planes extending parallel to the Z-axis; and
a plurality of horizontal coil structures coiled in one or more horizontal planes to tilt the lens relative to the X-Y plane when differing electrical power is applied to at least two of the plurality of horizontal coil structures, each of the horizontal planes oriented perpendicularly to the one or more vertical planes, wherein each horizontal coil structure of the plurality of horizontal coil structures is disposed at least partially above an upper surface of a respective magnet of the plurality of magnets along the Z-axis.
11. The optical device of claim 10 , wherein a first portion of each horizontal coil structure is aligned vertically above the upper surface of the respective magnet, a second portion of each horizontal coil structure is aligned inwardly of an inner surface of the respective magnet, and a center of each horizontal coil structure is aligned vertically above the inner surface of the respective magnet.
12. The optical device of claim 10 , wherein a first portion of each horizontal coil structure is aligned vertically above the upper surface of the respective magnet, a second portion of each horizontal coil structure is aligned outwardly of an outer surface of the respective magnet, and a center of each horizontal coil structure is aligned vertically above the outer surface of the respective magnet.
13. A camera system comprising the optical device of claim 10 .
14. An optical device, comprising:
a lens;
an image sensor disposed below the lens;
a first plurality of magnets disposed about the lens and at corners of a square pattern;
a second plurality of magnets disposed about the lens and at sides of the square pattern;
a plurality of vertical coil structures coiled in one or more vertical planes, each vertical coil structure of the plurality of vertical coil structures disposed inwardly of an inner surface of a respective magnet of the second plurality of magnets; and
a plurality of horizontal coil structures coiled in one or more horizontal planes, each of the horizontal planes oriented perpendicularly to the one or more vertical planes, and each horizontal coil structure of the plurality of horizontal coil structures disposed at least partially above or below a respective magnet of the first plurality of magnets.
15. The optical device of claim 14 , wherein the first plurality of magnets are magnetized vertically to generate magnetic fields vertically in vertical directions, and the second plurality of magnets are magnetized horizontally toward the lens to generate magnetic fields horizontally in horizontal directions toward the lens.
16. The optical device of claim 14 , wherein each horizontal coil structure of the plurality of horizontal coil structures is aligned between an inner surface and an outer surface of a respective magnet of the first plurality of magnets.
17. A camera system comprising the optical device of claim 14 .