Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Electro-optical interferometric microdensitometer system










Image Number 5 for United States Patent #5255069.

There is disclosed an interferometric system including electro-optical apparatus and method for examining and characterizing ultra fine details of various specimens such as a piece of photographic film. The method includes illuminating a specimen with a thin wide substantially pure Gaussian light beam, detecting the interfering patterns of light from the specimen, and characterizing ultra fine details of elements of the specimen by means of the detected light patterns. The apparatus includes a laser, a magnifying telescope, a multi-prism beam expander, and a linear array of photo-diodes. Signals from the photo-diodes are displayed on an optical multichannel analyzer (OMA) to provide a waveform characteristic of ultra fine elements of the specimen. Both "near-field" and "far-field" characterizations are possible and details of elements having diameters of the order of the wavelength of the light used (e.g., about 0.6 .mu.m) are detected.








 
 
  Recently Added Patents
Polymer-encapsulated colorant nanoparticles
Broadband optical network apparatus and method
Check weigher comprising of a rotating weighing chute with an accumulating and a discharge position that calculates flow rate by measuring weight accumulated during a predetermined time interv
Method for transmitting a signal
Restarting event and alert analysis after a shutdown in a distributed processing system
Depth estimation apparatus and method
Methods and systems providing desktop search capability to software application
  Randomly Featured Patents
Device for detaching a carrier from a semi-conductor disk
Light emitting diode (LED)-based light bulb
Cover latching structure for portable electronic device
Method and apparatus for storing error signals
Sunglass
Eugenol enhancement of transdermal drug delivery
Step type mask aligner
Method and apparatus for detecting defective traces in a mutual capacitance touch sensing device
Rotary sprinkler head
Printing plate positioning