Patent ID: 6080994
Filing Date: 2000-06-27
Classification: G06E

Abstract:
An improved optical correlator for detecting and identifying an unknown object, comprising:a first spatial light modulator (SLM) for receiving image data of the unknown object and patterning an electromagnetic beam according to the image data of the unknown object;a first toric mirror for producing a first Fourier transformation of the electromagnetic beam from the first SLM;a second SLM for receiving a Fourier transformed pattern of a known object and patterning the electromagnetic beam from the first toric mirror according to the Fourier transformed pattern of the known object;a second toric mirror for producing a second Fourier transformation of the electromagnetic beam from the second SLM;a charge coupled device (CCD); anda reflective surface for converging the electromagnetic beam from the second toric mirror onto the CCD.