Gradient Index Liquid Crystal Optical Device and Image Display Device

A gradient index liquid crystal optical device comprising:

• a first substrate;
• a second substrate arranged to face the first substrate;
• a liquid crystal layer sandwiched between the first substrate and the second substrate;
• a plurality of first electrodes provided on the first substrate on a side of the liquid crystal layer and extending in a first direction;
• a plurality of second electrodes arranged between the first electrodes and extending in the first direction;
• a third electrode provided on the second substrate on the side of the liquid crystal layer and extending in a third direction different from the first direction;
• and
• a plurality of fourth electrodes arranged between the first electrodes and the second electrodes and extending in the first direction,
• wherein the second electrodes adjacent in a second direction different from the first direction are electrically connected, and the fourth electrodes adjacent in the second direction are electrically connected.