TACTILE SENSOR AND APPARATUS INCLUDING TACTILE SENSOR

A tactile sensor includes a light guide unit extending in a predetermined direction, provided to guide light, incident from a light-emitting element, in the predetermined direction and including a pair of surfaces opposite to each other extending in the predetermined direction, an optical translucent elastic member, disposed on one side of the light guide unit, including a marker configured to diffuse light incident via one surface of the light guide unit toward the light guide unit, a light-receiving unit provided on the other side of the light guide unit and including a plurality of light-receiving elements on a light-receiving surface, and a plurality of opening portions provided between the light guide unit and the light-receiving unit and optically opened such that the light from the marker is projected to different positions, spaced apart from one another, on the light-receiving surface of the light-receiving unit.