ELECTRICALLY-TUNABLE LENSES AND LENS SYSTEMS

摘要

An optical device (34, 66, 76) includes an electro-optical layer (48), having an effective local index of refraction at any given location within an active area of the electro-optical layer that is determined by a voltage waveform applied across the electro-optical layer at the location. Conductive electrodes (44, 64, 74, 82, 84) extend over opposing first and second sides of the electro-optical layer. The electrodes include an array of excitation electrodes, which extend along respective, mutually-parallel axes in a predefined direction across the first side of the electro-optical layer, and which includes at least first and second electrodes having different, respective widths in a transverse direction, perpendicular to the axes. Control circuitry (38) is coupled to apply respective control voltage waveforms to the excitation electrodes so as to generate a specified phase modulation profile in the electro-optical layer.

主权项

1. An optical device, comprising:
an electro-optical layer, having an effective local index of refraction at any given location within an active area of the electro-optical layer that is determined by a voltage waveform applied across the electro-optical layer at the location; conductive electrodes extending over opposing first and second sides of the electro-optical layer, the electrodes comprising an array of excitation electrodes, which extend along respective, mutually-parallel axes in a predefined direction across the first side of the electro-optical layer, and which comprises at least first and second electrodes having different, respective widths in a transverse direction, perpendicular to the axes; and control circuitry, which is coupled to apply respective control voltage waveforms to the excitation electrodes and to modify the control voltages applied to each of the excitation electrodes concurrently and independently so as to generate a specified phase modulation profile in the electro-optical layer.