Lighting system

A lighting system, comprising:

• a light source;
• a liquid crystal cell for changing a light distribution angle of light emitted from the light source;
• and
• a control device for controlling a gradation of the light distribution angle,
• wherein the liquid crystal cell comprises:
• a first substrate on which a first transparent electrode and a second transparent electrode each extending in a first direction are alternately provided,
• a second substrate on which a third transparent and a fourth transparent electrode each extending in a second direction orthogonal to the first direction are alternately provided, and
• a liquid crystal layer between the first substrate and the second substrate, and
• wherein the control device comprises:
• a communication portion for receiving gradation information of the light distribution angle from an information communication terminal;
• a storage section for storing a weighting coefficient that associates a change in the light distribution angle with a change in the gradation of the light distribution angle, and
• a control section for calculating a first voltage to be input to the first transparent electrode, a second voltage to be input to the second transparent electrode, a third voltage to be input to the third transparent electrode, and a fourth voltage to be input to the fourth transparent electrode based on the gradation information and the weighting coefficient.