Optical interferometric range sensor

An optical interferometric range sensor, comprising:

• a light source configured to emit light with a changing wavelength;
• an interferometer configured to receive the light emitted from the light source and generate interference light based on measurement light and reference light, the measurement light being light emitted from a sensor head to a measurement target and reflected from the measurement target, the reference light being light traveling on an optical path at least partially different from an optical path of the measurement light;
• a light receiver configured to receive the interference light from the interferometer to convert the interference light to an electric signal;
• a processor configured to perform operations comprising:
• calculating a distance from the sensor head to the measurement target based on the electric signal resulting from conversion performed by the light receiver;
• operation as an identifier configured to identify a type of the sensor head;
• and
• operation as a setter configured to set a measurement condition corresponding to the type of the sensor head identified by the identifier.