Stray field robust magnetic sensor system for detecting a state of a tiltable and rotatable object

A sensor system, comprising:

• a magnet connected to an object, the magnet being connected to the object such that the magnet is not centered on an un-tilted axis of the object,
• wherein the object is configured to tilt about a tilt point, and
• wherein the un-tilted axis extends through the tilt point and corresponds to an un-tilted position of the object;
• and
• a differential three-dimensional (3D) sensor,
• wherein a first 3D sensing pixel of the differential 3D sensor and a second 3D sensing pixel of the differential 3D sensor are at different distances from the tilt point of the object, and
• wherein the differential 3D sensor is not centered with respect to a center of the magnet.

An apparatus, comprising:

• a magnet connected to an object capable of being positioned with respect to multiple degrees of freedom,
• wherein the object is configured to tilt about a tilt point,
• wherein the object has an un-tilted axis corresponding to an un-tilted position of the object,
• wherein the un-tilted axis extends through the tilt point, and
• wherein the magnet is connected to the object such that a center of the magnet is offset from the un-tilted axis of the object;
• and
• a magnetic sensor to determine a state of the object with respect to the multiple degrees of freedom based on a set of magnetic field strengths of a magnetic field generated by the magnet, the magnetic sensor comprising a first three-dimensional (3D) sensing pixel and a second 3D sensing pixel,
• wherein a distance between the first 3D sensing pixel and the tilt point of the object is different from a distance between the second 3D sensing pixel and the tilt point of the object, and
• wherein a distance between the first 3D sensing pixel and the center of the magnet is different from a distance between the second 3D sensing pixel and the center of the magnet.