Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Dynamic diffractive optical transform










Image Number 12 for United States Patent #7009581.

A dynamic diffractive optical transform. An electric field pattern is created across a body of material, the material being characterized in that it has an optical transmission property which varies in response to of an electric potential applied across a portion thereof. The electric field pattern is created such that the resulting profile of the transmission property is an arbitrary shape which produces a desired diffraction pattern that may not be physically realizable in conventional refractive optics or is a Fresnel lens-like construct derived from a refractive optical element. This is done by selectively applying electric potentials to transparent electrode pairs having liquid crystal material therebetween and preferably relatively small proportions in relation to the relevant wavelength of light, so as to create variations in phase delay that are aperiodic, have other than fifty percent spatial duty factor or have multiple levels of phase delay. The transform is embodied in an optical scanner, an adaptive lens, and an optical switch.








 
 
  Recently Added Patents
Reference circuit with curvature correction using additional complementary to temperature component
Systems and methods for sensing external magnetic fields in implantable medical devices
Knife grip
Sparse data compression
Multiple RF band operation in mobile devices
Aperture stop
Linear jet ionizer
  Randomly Featured Patents
System and method for selecting the correct group of replicas in a replicated computer database system
Lens driving device
Floor panel
Manufacture of printed circuit boards
Lateral liner with seal
Centrifugal pump with coaxial inlet and outlet and liquid level detector
Game target
Thin film capacitor, method for manufacturing the same and printed circuit board incorporating the same
Safety maintaining apparatus for automatic machines
Circuit for converting single-ended input signals to a pair of differential output signals