POSITION DETECTING DEVICE

摘要

A highly accurate position detection is performed by the use of a magneto-resistance effect element such as a TMR element. At least two magnetic detecting elements 21-1 and 21-2 are provided to detect leakage magnetism from a scale 11 having a magnetic signal magnetically recorded thereon, and to output a recording signal of a position where the leakage magnetism is detected. The at least two magnetic detecting elements 21-1 and 21-2 are disposed side by side in a direction y perpendicular to a direction x of scanning the scale 11 and also disposed at positions approximately equidistant from a magnetic signal recording surface of the scale 11.