A lighting system is provided that includes: an optical device including a cylindrical lens made up of a liquid lens, an emission unit including an axis line in the Z-axis direction, and a reflecting mirror configured to reflect light emitted from the emission unit. The cross-sectional shape of a light reflecting portion when cutting away the reflecting mirror at a virtual plane perpendicular to the Z axis is a part of a parabola. The axis line of the emission unit is positioned between the vertex-of the parabola and a focal point. Thus, there is provided a lighting system in which an optical device, which is made up of a liquid lens employing an electrowetting phenomenon, having an arrangement and configuration whereby high optical power can be obtained.