Abstract: Provided is a measurement head and a confocal displacement sensor which are capable of suppressing a decrease in reliability of measurement in a high-temperature environment of the confocal displacement sensor. The measurement head is a measurement head for a confocal displacement sensor having a white light source. The measurement head has a configuration in which a plurality of glass lenses are accommodated in a head metal housing. A metal spring member biases the plurality of glass lenses including the lens toward the +x direction in a state where the lens abuts on the ring screw is provided in the head metal housing. Or a thermal expansion polyimide member provided inside the metal housing.

Abstract: An optical measurement apparatus performs an optical axis adjustment with respect to a reference surface and obtains high measurement accuracy. In an outer surface of a box-shaped light receiving housing, reference surfaces which become a reference at the time of placing the light receiving housing. In the light receiving housing, the light receiving side telecentric lens is mounted. An imaging element holder holding a two-dimensional imaging element is provided on an inner surface opposite to an introducing opening of the light receiving housing, and the two-dimensional imaging element is mounted in a manner of being capable of adjusting its position and posture.

Abstract: An optical measurement apparatus performs an optical axis adjustment with respect to a reference surface and obtains high measurement accuracy. In an outer surface of a box-shaped light receiving housing, reference surfaces which become a reference at the time of placing the light receiving housing. In the light receiving housing, the light receiving side telecentric lens is mounted. An imaging element holder holding a two-dimensional imaging element is provided on an inner surface opposite to an introducing opening of the light receiving housing, and the two-dimensional imaging element is mounted in a manner of being capable of adjusting its position and posture.