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
Image forming apparatus acquiring image processing time detected when the acquired time is longer that the previously set time and to correct output image density using generated patch pattern
Power storage device and method for manufacturing the same
Pet grooming brush and vacuum attachment
Tap and linking module TDO register, gating for TCK and TMS
Breathing mask
Fabrication method of packaging substrate having through-holed interposer embedded therein
Method of making a CIG target by cold spraying
  Randomly Featured Patents
Devices based on fibers engaged to substrates with grooves
Method for testing systems designed for NO.sub.x reduction in the combustion of carbonaceous fuels
Fly tying method and apparatus
Method and system for brain entertainment
Side keypad assembly and portable electronic device using the same
Recognition of characters in cursive script
Shared DSL network and deployment method
Deep trench isolation structures in integrated semiconductor devices
Medical image forming apparatus
Database management system and method capable of dynamically generating new tasks that can be processed in parallel