Light output device for caring for user using artificial intelligence and method of operating the same

A light output device for caring for a skin of a user using artificial intelligence, the light output device comprising:

• a plurality of light sources configured to irradiate light;
• a memory configured to store a skin care model learned using a deep learning algorithm to infer a facial skin state of the user;
• a camera configured to capture an image of a face of the user;
• and
• a processor configured to:
• acquire a skin state of each part of the face based on a first-type face image captured through the camera and the skin care model by classifying the first-type face image into a plurality of main parts and acquiring a plurality of first-type partial images respectively corresponding to the plurality of classified main parts, and converting the plurality of acquired first-type partial images into a plurality of second-type partial images and a plurality of third-type partial images, and
• control light output of the plurality of light sources based on the acquired skin state, wherein the light output is controlled by adjusting a light irradiation time and a light irradiation intensity of the plurality of light sources according to the acquired skin state of each part of the face.