Lighting device and lighting system

A lighting system,

• comprising a plurality of lighting devices, each one of the plurality of lighting devices being a lighting device configured to irradiate an illuminated surface having a step with light from a preset fixed point, the lighting device comprising:
• a fly eye lens having a plurality of lens portions configured to receive emitted light from a light source and project the emitted light on a particular illuminated region in a manner that the emitted light is overlapped with each other;
• and a light shielding mask configured to oppose to the fly eye lens and have a transparent portion made open corresponding to each of the plurality of lens portions, respectively, wherein the transparent portion is divided to be formed into a first transparent portion allowing light for forming a projected image on an upper stage of the illuminated surface with the step to enter the lens portions and a second transparent portion allowing light for forming a projected image on a lower stage of the illuminated surface with the step to enter the lens portions, and the transparent portion of the first and second transparent portion is individually set depending on a distance to each stage of the illuminated surface,
• wherein a fixed point for fixing each lighting device is set so that the emitted light is overlapped with each other on the illuminated surface.