Coating thickness measuring device and coating device including the same

A coating device comprising a coating thickness measuring device configured to measure a thickness of a coating material applied to a substrate which is fed by a coating roll on which the substrate is rolled, and a coating material coating device which applies the coating material to the substrate,

• wherein the coating thickness measuring device comprises:
• a coating thickness measurement module and,
• a position movement module configured to move the coating thickness measurement module with respect to the coating roll,
• wherein the coating thickness measurement module includes:
• a light applying unit configured to apply light to a surface of the coating material applied to a portion of the substrate rolled on the coating roll;
• a light acquisition unit configured to acquire light reflected from the surface of the coating material;
• and
• a processor configured to calculate the thickness of the coating material based on the acquired light,
• wherein the coating material coating device is a slot die that dispenses the coating material through an outlet formed in the shape of a slit,
• wherein the position movement module is coupled to an outer side of the slot die so as to be integrated with the slot die,
• wherein the coating thickness measurement module is disposed in the position movement module and configured to move to the portion of the substrate rolled on the coating roll.