Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Novelty headband
Process for producing a carbon-comprising support
Associating objects in databases by rate-based tagging
Process to increase selectivity to ethylene in oxygenates-to-olefins conversions
Character input device and program for displaying next word candidates based on the candidates' usage history
Collaborative image capture
Method and system for remapping processing elements in a pipeline of a graphics processing unit
  Randomly Featured Patents
Controlling a press-to-talk session using wireless signaling
Hop plant named "YCR Accession No. 7"
Metal-bonding adhesive compositions
Vehicle running control system
Anti-theft steering shaft lock
Portable terminal
Probe card locking device of a semiconductor wafer probe station
Direct antifreeze solution concentration control system for a fuel cell power plant
Process and apparatus for measuring the weft thread or course position of textile sheets
Shift control method for six-speed automatic transmission