Resources Contact Us Home
Electro-optical interferometric microdensitometer system

Image Number 10 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
Locking flange
Method for using extended security system, extended security system and devices
Hepatitis C virus inhibitors
Reception system including a mechanism countering pulsed interference
Output device, source apparatus, television set, system, output method, program, and recording medium
Buildable dinnerware
ZnO green luminescent material and its preparation
  Randomly Featured Patents
Ink cartridge having an atmosphere communicating channel of labyrinthine structure
Screen printing apparatus and process comprising chamber with movable upper surface-squeegee combination
Hand guard for drilling rig hand tongs
Swimming hoop with adjustable buoyancy member
Hat cell phone or wireless device for hands-free user-safe operation
Forming a buried insulator layer using plasma source ion implantation
Intra-device communications architecture for managing electrical power distribution and consumption
Hands-free hair dryer
External write pulse control method and structure
Variable frequency power unit controlling system