Optical correlator system

Details Optical correlator system Optical correlator system

1994-08-05

1995-12-19

Lerner, Martin

Optical: systems and elements

Diffraction

Using fourier transform spatial filtering

356349, 359561, 364822, G02B 2742, G01B 902, G06E 300

Patent

active

054773822

ABSTRACT:
A system and method of optical correlation that avoids bias level terms in the optical correlation output. In the system and method, two coherent polarized component beams having frequencies f.sub.1 and f.sub.2 are derived from a light source. Portions of these component beams are converted to a reference electrical signal having a frequency .DELTA.f=f.sub.2 -f.sub.1. The sum f.sub.1 +f.sub.2 of the component beams is correlated under the control of a multiple of the reference electrical signal. The Fourier transform of the amplitude of the correlated light is projected and detected on a detection plane.

REFERENCES:
patent: 4573198 (1986-02-01), Anderson
patent: 4696061 (1987-09-01), Labrum
patent: 5005946 (1991-04-01), Brandstetter
patent: 5121228 (1992-06-01), Paek
patent: 5155606 (1992-10-01), Landesman
patent: 5216541 (1993-06-01), Takesue et al.
patent: 5235461 (1993-08-01), Kirsch et al.

Affiliated with

Also associated with

Rating

Optical correlator system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical correlator system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical correlator system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-995872