Movable or removable closures – With protective grille or safety guard – Removable
Reexamination Certificate
2011-02-02
2011-10-04
Rude, Timothy L (Department: 2871)
Movable or removable closures
With protective grille or safety guard
Removable
Reexamination Certificate
active
08028473
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 frequency of a drive signal that generates an electric field in the device may be varied, and the frequency dependent material has different charge mobilities for the different frequencies. At a low charge mobility, the frequency dependent material has little effect on the existing electrode structures. However, at a high charge mobility, the frequency dependent material appears as an extension of the fixed electrodes, and may be used to change the effective electrode structure and, thereby, the spatial profile of the electric field. This, in turn, changes the optical properties of the liquid crystal, thus allowing the optical device to be frequency controllable.
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Asatryan Karen
Bagramian Aram
Galstian Tigran
Presniakov Vladimir
Tork Amir
Anglehart et al.
LensVector Inc.
Rude Timothy L
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