AR glasses include: a display unit that displays a virtual image within a field of view of a wearer such that an actual view right in front of the wearer is able to be seen; and a liquid crystal panel that is able to partially change a transmittance of external light. An AR glasses control unit sets a transmittance of external light of a portion of the liquid crystal panel corresponding to the virtual image to be lower than a transmittance of external light of another portion.