Displacement detector

A displacement detector, the displacement detector being a capacitive displacement detector, the displacement detector comprising:

• phase adjustment units configured to generate a signal whose phase is adjusted from a transmission signal, the transmission signal being output from a transmission signal output unit, the transmission signal being transmitted from a transmission electrode to a reception electrode through a coupling electrode disposed in the scale, the transmission electrode and the reception electrode being disposed in a detection head, the coupling electrode being disposed in a scale, the transmission signal being received by the reception electrode, the detection head detecting a displacement between the detection head and the scale based on the received signal;
• an amplitude adjustment unit configured to adjust an amplitude of the signal whose phase is adjusted by the phase adjustment unit to generate a crosstalk correction signal;
• and
• a demodulation unit configured to sample a signal generated by synthesizing the crosstalk correction signal and the received signal and to demodulate the sampled signal.