Provided is a light shielding device including a light shielding wall configured to include a plurality of panels, the light shielding wall being used as a partition of a first space and a second space, the plurality of panels being controllable in either a light transmission state in which light is transmitted or a light shielding state in which light is shielded, an optical path specifying unit configured to specify a predetermined optical path to be passed through the light shielding wall, a panel specifying unit configured to specify a panel on the light shielding wall, the panel being corresponded to a position at which the predetermined optical path specified by the optical path specifying unit passes through the light shielding wall, and a controller configured to control a light transmission state or a light shielding state for the plurality of panels on the light shielding wall.