US 11,719,767 B2
Magnetic sensor
Daizo Endo, Ichihara (JP); and Hiroyuki Tomita, Ichihara (JP)
Assigned to SHOWA DENKO K.K., Tokyo (JP)
Filed by SHOWA DENKO K.K., Tokyo (JP)
Filed on Dec. 2, 2021, as Appl. No. 17/457,299.
Claims priority of application No. 2020-212026 (JP), filed on Dec. 22, 2020.
Prior Publication US 2022/0196762 A1, Jun. 23, 2022
Int. Cl. G01R 33/60 (2006.01); G01R 33/06 (2006.01)
CPC G01R 33/063 (2013.01) 15 Claims
OG exemplary drawing
 
1. A magnetic sensor comprising:
a sensitive element configured to sense a magnetic field by a magnetic impedance effect; and
a focusing member comprising a soft magnetic material, wherein the focusing member is configured to face the sensitive element and to focus one or more magnetic force lines from an outside of the magnetic sensor onto the sensitive element,
wherein the focusing member further comprises:
a facing part facing the sensitive element;
a wide part provided on a side of the focusing member where the one or more magnetic force lines enter from the outside, the wide part of the focusing member comprising a central portion, a first end portion, and a second end portion;
a first extending part extending from the first end portion of the wide part of the focusing member in a direction parallel to the one or more magnetic force lines; and
a second extending part extending from the second end portion of the wide part of the focusing member in a direction parallel to the one or more magnetic force lines.