Light control device

A light control device comprising:

• a light control element including
• first and second base members,
• first and second electrodes respectively provided on the first and second base members,
• a liquid crystal layer filled between the first and second electrodes, and
• first and second terminals electrically connected to the first and second electrodes;
• and
• a drive circuit that applies a first drive voltage to the first terminal and applies a second drive voltage having a polarity different from that of the first drive voltage to the second terminal,
• wherein the first drive voltage
• is set to a first voltage in a first period,
• is set to a second voltage lower than the first voltage in a second period following the first period,
• is set to a third voltage lower than the second voltage in a third period following the second period, and
• is set to a fourth voltage lower than the second voltage and higher than the third voltage in a fourth period following the third period.