Resources Contact Us Home
Dynamic diffractive optical transform

Image Number 11 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
Process for the production of an acylation catalyst
Gas flow indicator
Avoiding conflict in update in distributed environment employing multiple clients
Accessory sleeve
System and method for discontinuous reception control start time
Tetrazolyl oxime derivative, salt thereof, and plant disease control agent
  Randomly Featured Patents
In-plane switching mode liquid crystal display device
Robot device with changing dialogue and control method therefor and storage medium
Systems and methods for cross-vendor mapping service in cloud networks
Lifter device for magnetic tape cartridge
Packaging container
Authentication of data for a gaming machine
Using PSTN reachability to verify caller ID information in received VoIP calls
Chair with tiltable backrest
Method and apparatus for identifying, cutting and processing documents
File bundling for cache servers of content delivery networks