Optical: systems and elements – Diffraction – Using fourier transform spatial filtering
Patent
1995-06-07
1996-06-04
Sikes, William L.
Optical: systems and elements
Diffraction
Using fourier transform spatial filtering
382278, 382280, 364822, 364827, 359560, 359 29, G02B 2746, G06K 964
Patent
active
055238815
ABSTRACT:
An optical signal processor which employs a coherent light source, two spatial light modulators and a beam splitter. Light is from the source is reflected from the beam splitter and sent to a first spatial light modulator, then sent through the beam splitter, a Fourier transform is performed and the transformed light is then reflected from the second spacial light modulator. The light form the second spacial light modulator is then inverse transformed and returned to the beam splitter where it is reflected to a readout detector. The signal read out is the correlation map between an input image from the first modulator and a filter image of the second modulator.
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Boysel R. Mark
Florence James M.
Donaldson Richard L.
Kesterson James C.
McCormack Brian C.
Parker Kenneth
Sikes William L.
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