Patent ID: 7880858
Filing Date: 2011-02-01
Classification: B82Y,G02B,G02F

Abstract:
1. A liquid crystal lens, comprising: a first light-pervious plate; a second light-pervious plate opposite to the first light-pervious plate; a first electrode layer comprising a plurality of concentric, annular electrodes arranged on the first light-pervious plate, the first electrode layer being comprised of carbon nanotubes; a second electrode layer arranged on the second light-pervious layer; a liquid crystal layer sandwiched between the first light-pervious plate and the second light-pervious plate, the liquid crystal layer comprising a plurality of annular regions spatially corresponding to the respective annular electrodes, a density of liquid crystal in the annular regions of the liquid crystal layer being different from each other; and a driving voltage unit for providing voltages between each of the annular electrodes and the second electrode layer for creating a gradient distribution of refractive index of the liquid crystal layer in radial directions.