US 12,483,803 B2
Position detection device, lens module, imaging apparatus, and angle sensor apparatus
Kentaro Harada, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on May 16, 2024, as Appl. No. 18/666,103.
Claims priority of application No. 2023-086690 (JP), filed on May 26, 2023.
Prior Publication US 2024/0397218 A1, Nov. 28, 2024
Int. Cl. H04N 25/47 (2023.01); H04N 23/54 (2023.01)
CPC H04N 25/47 (2023.01) [H04N 23/54 (2023.01)] 26 Claims
OG exemplary drawing
 
1. A position detection device comprising:
a first magnetic field generator generating a first magnetic field;
a driver opposed to the first magnetic field generator in a first-axis direction and configured to generate a driving force to thereby cause the first magnetic field generator to move in a second-axis direction parallel to a first plane orthogonal to the first-axis direction; and
a magnetic field sensor configured to detect a magnetic field component, of the first magnetic field, that is parallel to the first plane, wherein
the first magnetic field generator is movable in the second-axis direction with respect to the driver and the magnetic field sensor,
the driver is spaced from and overlaps a part of the first magnetic field generator in the first-axis direction, and extends across the part of the first magnetic field generator in a third-axis direction parallel to the first plane and orthogonal to the second-axis direction, and
a center position of the magnetic field sensor in the third-axis direction is different from a center position of the first magnetic field generator in the third-axis direction.