LIQUID CRYSTAL SPATIAL LIGHT MODULATOR (VERSIONS) Russian patent published in 2008 - IPC G02F1/137 

FIELD: physics; measurements.

SUBSTANCE: present invention pertains to measurement techniques. The liquid crystalline substance used in the modulator, which fills the space between current conducting coatings, is a smectic C*-type composition with ferroelectric properties, capable of forming in its layer, spatially inhomogeneous structures, with high speed modulating phase of the transmitted light, under the effect of pulsed alternating electrical voltage. The light is modulated using one spatially inhomogeneous modulating element, whose surface area is equal to the aperture of the whole modulator, with solid current conducting coatings on the whole aperture. The pulsed control alternating electrical voltage is applied to the single pair of current conducting coatings. In the second version, one of the current conducting coatings is reflective.

EFFECT: faster operation with simplification of the structure of the device and manufacturing process.

4 cl, 8 dwg