Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Near-field transducers for focusing light
Managing imaging of computing devices
Defensin polynucleotides and methods of use
Active pulse blood constituent monitoring
Luggage
Coupling device having piercing member
Printing system, information processing apparatus, print job processing method, information processing method, program, and storage medium
  Randomly Featured Patents
Transmission circuit and communication device
Manufacture of fine grain metal powder billets and composites
Container-closure structure employing fitment to prevent closure removal
Active pixel with built in self-repair and redundancy
Methods for sequencing polynucleotides
Camera system
System and method for the creation and automatic deployment of personalized, dynamic and interactive voice services, with real-time database queries
Syringe pumps
Cabinet handle
Degassing of liquid aluminum and other metals