US 11,703,358 B2
Magnetic sensor, magnetic encoder, and lens position detection device
Tsuyoshi Umehara, Tokyo (JP); Hiraku Hirabayashi, Tokyo (JP); and Yongfu Cai, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Apr. 5, 2022, as Appl. No. 17/713,583.
Claims priority of application No. 2021-069290 (JP), filed on Apr. 15, 2021.
Prior Publication US 2022/0333953 A1, Oct. 20, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G01D 5/16 (2006.01); G01R 33/09 (2006.01); G01B 7/00 (2006.01); G02B 7/10 (2021.01)
CPC G01D 5/16 (2013.01) [G01B 7/003 (2013.01); G01R 33/096 (2013.01); G01R 33/098 (2013.01); G02B 7/10 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A magnetic sensor for detecting a target magnetic field including a magnetic field component in a first direction parallel to an imaginary straight line, the magnetic sensor comprising:
first to fourth resistors each configured to change in resistance with strength of the magnetic field component;
a power supply port to which a current of predetermined magnitude is supplied;
a ground port that is grounded;
a first output port; and
a second output port, wherein
the first resistor and the second resistor are located in a first region and connected in series via a first connection point connected to the first output port,
the third resistor and the fourth resistor are located in a second region and connected in series via a second connection point connected to the second output port, at least a part of the second region being located at a position different from the first region in the first direction,
an end of the first resistor opposite to the first connection point and an end of the third resistor opposite to the second connection point are connected to the power supply port,
an end of the second resistor opposite to the first connection point and an end of the fourth resistor opposite to the second connection point are connected to the ground port, and
the first and second resistors are located between the third and fourth resistors in a second direction orthogonal to the first direction.