Calibration system and drawing device

A drawing device comprising:

• a conveying drum that has a cylindrical shape, the conveying drum supporting a long sheet-like substrate on part of an outer periphery and conveying the substrate by rotating about a central shaft of the cylinder;
• at least one exposure head that emits a beam for exposure toward an exposure surface of the substrate;
• and
• at least one calibration system that performs calibration of the at least one exposure head, wherein
• the calibration system includes:
• an optical system that is provided insertably into and removably from an optical path of the beam that is emitted from the exposure head and enters the exposure surface, the optical system guiding at least part of the beam in a direction different from that of the optical path when the optical system is inserted into the optical path;
• a movement mechanism that inserts and removes the optical system into and from the optical path;
• and
• an optical sensor having a light-receiving surface for receiving at least part of the beam that is guided by the optical system when the optical system is inserted into the optical path, the optical sensor outputting a detection signal by detecting an irradiation position and an irradiation intensity at the light-receiving surface of at least part of the beam that has entered the light-receiving surface.