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
Building board for use as a carrier for a surface cladding of ceramic tiles, a stucco, or a trowel mortar, on or in buildings
Semiconductor device having an oxide semiconductor film
Systems, methods, and devices for dynamic resource monitoring and allocation in a cluster system
Compound with spiro chiral carbon backbone, preparation method thereof, and pharmaceutical composition containing the same
Bootstrapping kerberos from EAP (BKE)
Plasma processing apparatus and plasma processing method
Plurality of reaction vessels with lids
  Randomly Featured Patents
Handheld electronic device
Optical disc apparatus, focus control method and integrated circuit
Refractometric analyzer
Grain scalping and cleaning apparatus and method
Process for the production of 2-aryl-2H-benzotriazoles
Method and apparatus for providing a notification appliance with a light emitting diode
Hydraulic valve control and feedback utilizing a harmonic drive differential
Contact carrying spring member
Service network
System and method for dynamic uploading and execution of applications and drivers between devices