There is provided a visual line detection device including at least one light source configured to radiate light to an eyeball of a user observing a display surface through at least one optical member, and an imaging unit configured to acquire a captured image of the eyeball used to detect a visual line of the user on the display surface by detecting reflected light of the light from the eyeball. The reflected right from the eyeball passes through at least the optical member installed in an optical path along which the light from the display surface travels from the display surface to the eyeball of the user, and is incident on the imaging unit.
