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US 4,046,456 AGranted
Electro-optic cell with transverse electric field
AssigneeHoneywell Inc.
InventorUlrich Bonne
Life of this patent
Estimating the term…
Abstract
This disclosure is directed to an electro-optic cell construction of the type which employs a layer of minute dipole particles in a suspension carried between two transparent sheets for use as an electro-optic light controlling device such as a shutter, or the like. In combination with the dipole particle containing fluid chamber are optically transparent piezoelectric transformer elements for causing a transverse electric field in the fluid chamber to increase the speed of response of the shutter action.
Claims5
A light controlling device comprising:
- a pair of spaced transparent plates presenting a light path through said plates;
- a transparent fluid suspending medium between said plates;
- a plurality of elongated dipoles freely carried within the fluid medium;
- first means for applying an electric field in a direction parallel to said light path to orient said dipoles parallel to said light path, thereby rendering transparent said light controlling device;
- and
- optically transparent piezoelectric transformer means in said fluid between said plates, and connection means from said transformer means adapted for connection to a source of electrical power for energizing said piezoelectric transformer means, said transformer means being so oriented in said fluid that when energized generating a transverse electric field and motion to orient said dipoles orthogonal to said light path to render opaque said light controlling device.
3 more elements
Dependencies are inferred from the claim text.