Resources Contact Us Home
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
Managing delivery of application server content
Method and apparatus for supporting delivery, sale and billing of perishable and time-sensitive goods such as newspapers, periodicals and direct marketing and promotional materials
Pyrazole kinase modulators and methods of use
Image capture and identification system and process
Method and system for reduction of decoding complexity in a communication system
Display device and method of manufacturing the same
Method and apparatus for displaying system status with a wide range of viewing angle
  Randomly Featured Patents
Electrochemical cell simulating circuit arrangement
Delayed coking process for producing free-flowing coke using polymeric additives
System for generating constant speed output from variable speed input
Apparatus for applying a semiconductor chip to a carrier element with a compensating layer
Recharging terminal
Interactive map production
Method and circuit for detecting errors in digital signals
Nozzle for use in a torch head of a plasma torch apparatus
Universal insole
Fluid measuring apparatus