METHOD FOR ADJUSTING OPTICAL DISPLACEMENT SENSOR AND METHOD FOR MANUFACTURING OPTICAL DISPLACEMENT SENSOR

In an optical displacement sensor (10) having a predetermined optical system, the predetermined optical system is adjusted to meet the Scheimpflug condition. The predetermined optical system has a projection module (9) configured to project light onto an object to be measured (16); a light-receiving element (13) configured to receive reflected light reflected by the object to be measured (16) of light projected from the projection module (9); and a light-receiving lens (14) configured to image the reflected light onto the light-receiving element (13), the light-receiving lens being positioned between the object to be measured (16) and the light-receiving element (13). The adjustment method performs an adjustment by moving only the light-receiving lens (14) in a direction of an optical axis (Z 1 direction) of the light-receiving lens (14) and in a direction perpendicular (X 1 direction) to the direction of the optical axis of the light-receiving lens (14).