Patent ID: 8305551

Claim:
A liquid crystal lens electrically driven comprising: a first substrate provided with a plurality of first lens regions, each of the first lens regions including a plurality of first electrodes disposed in parallel in a first direction and separated from each other; a second substrate being opposite to the first substrate, and provided with a plurality of second lens regions, crossing the plurality of first lens regions, each of the second lens regions including a plurality of second electrodes disposed in parallel in a second direction crossing the first direction and separated from each other; a liquid crystal layer filling a space between the first and second substrates; a first voltage source applying different voltage values to the plurality of first electrodes provided in each first lens region such that the voltage values are gradually increased from the center of each first lens region to the edge of each first lens region; a second voltage source applying different voltage values to the plurality of second electrodes provided in each second lens region such that the voltage values are gradually increased from the center of each second lens region to the edge of each second lens region; and a third voltage source and a fourth voltage source respectively applying the same voltage to the plurality of first electrodes and the plurality of second electrodes.