| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulse wave sensor that can measure pulse waves even when a body motion occurs.SOLUTION: A pulse wave sensor 100 comprises a first light emitting element 111 and a second light emitting element 112 that emit light with a first wavelength, a third light emitting element 113 and a fourth light emitting element 114 that emit light with a second wavelength different from the first wavelength, and a light receiving element 121, and is arranged in such a manner that the distance between the first light emitting element 111 and the third light emitting element 113 is shorter than the distance between the first light emitting element 111 and the fourth light emitting element 114.SELECTED DRAWING: Figure 3 |
