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
Pressure-sensitive adhesive composition for optical films, pressure-sensitive adhesive optical film and image display
Data recording apparatus with recording control based on defect block and control method thereof
Optical sensor and electronic apparatus
System and method for content delivery
Label printer
Method for determining the local position of at least one mobile radio communication device based on predetermined local positions of adjacent radio communication devices, associated radio com
Nucleic acid sequences encoding strictosidine synthase proteins
  Randomly Featured Patents
Anti-backlash cam
Self-expanding stent with enhanced radial expansion and shape memory
Oval container lid
Method for dual damascene process
Method and apparatus for achieving antenna receive diversity with wireless repeaters
Handling and loading batches of products on edge
Apparatus for reducing the exhaust noise of internal combustion engines or the like
Vent cap
Imaging system having external drum and method for producing drum
Rotational transfer mechanism