Psychological state display system

A psychological state display system comprising:

• a near-infrared light source that outputs output light toward a plurality of persons, the output light including a first near-infrared radiation having a wavelength of greater than or equal to 780 nm and less than 2,500 nm and an output of greater than or equal to 10 W and smaller than or equal to 3 KW;
• an imaging device that receives the first near-infrared radiation included in the output light outputted and captures an infrared image of the plurality of persons;
• a generation device that, using a trained machine learning model that receives an input of the infrared image captured and outputs a psychological state of at least one person among the plurality of persons indicated by the infrared image, generates psychological data indicating the psychological state;
• and
• a display device that displays a change over time in the psychological data generated.