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
Oxide material, electrophotographic photoreceptor, process cartridge, and image forming device
Hardware/software debugging using memory access parameters
Integrated circuit package system with bonding lands
Hydrogen generation device and fuel cell system
Handheld electronic communication device having sliding display
Buckle
Battery structures and related methods
  Randomly Featured Patents
Suspension device for hammocks and other objects
Acceleration detector having highly accurate gaps in magnetic circuit including a differential transformer
Method and stencil design for printing non-planar hybrid circuits
Cleaning device for eyeglasses
Automatic brightness limiter
Method and program for leveling aspherical workpieces
Transmitter power control circuit
Television receiver
Amplifier for correcting group time delay of electrical signals and an intermediate frequency amplifier stage for radio equipment comprising an amplifier of this kind
Bioinformation detection device utilizing air pressure variation