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
Location-based method to specify ratio frequency spectrum rights
Simulating non power of two texture behavior
Method for production of a thermoelectric apparatus
Deadline-driven parallel execution of queries
Hermetically sealed atomic sensor package manufactured with expendable support structure
Controlling generation of debug exceptions
Performance apparatus and electronic musical instrument
  Randomly Featured Patents
Acetylenes disubstituted with 2-tetrahydropyranoxy-aryl and aryl of heteroaryl groups having retinoid-like biological activity
Method and device for separating solids from polymer solutions
Method of making optical fibre cables
Safening of herbicidal clomazone applications with organophosphorus compounds
Laser beam levelling device and process for operating a laser beam levelling device and associated contrivance
Thieno[2,3-c] isoquinolines for use as inhibitors of PARP
Method and apparatus for wireless internet access
Energy absorbing, water blown, rigid polyurethane foam
Canteen with a spring biased valve actuated by a push button
Transform for digital images