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US 2013/0077001 A1Published application
Electro-optical devices using dynamic reconfiguration of effective electrode structures
AssigneeLensvector Inc.
InventorsTigran Galstian, Vladimir Presniakov, Karen Asatryan, Amir Tork, Armen Zohrabyan, Aram Bagramyan
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Abstract
Variable liquid crystal devices for controlling the propagation of light through a liquid crystal layer use a frequency dependent material to dynamically reconfigure effective electrode structures in the device. The drive signal source uses pulse-width modulation to set a frequency and an amplitude of the drive signal.
Claims7
A tunable optical device comprising:
- at least one liquid crystal layer;
- and
- an electrode structure having a planar electrode, a hole-patterned electrode and a weakly conductive material extending across an aperture of the hole-patterned electrode, said planar electrode and said hole-patterned electrode being arranged on opposite sides of said layer;
- a signal generator comprising a pulse-width modulation circuit;
- wherein said circuit a voltage of a drive signal provided to said electrode structure;
- and
- a controller connected to said pulse-width modulation circuit and configured to set an amplitude and a frequency of said drive signal as a function of a desired tunable optical property.
4 more elements
Dependencies are inferred from the claim text.