Method of producing an optical wave with a predetermined optical

Details Method of producing an optical wave with a predetermined optical Method of producing an optical wave with a predetermined optical

1994-01-27

1994-11-08

Hellner, Mark

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 28, G01C 308

Patent

active

053631862

ABSTRACT:
A five step method is used to produce an optical wave. The first step is to pick the desired far field pattern of the diffractive optical wave. The second step entails transforming the desired far field pattern to the desired source using a fast fourier transform (FFT). In the third step we use the formula exp[j.phi..sub.i (.sigma..sub.i)]=A.sub.i exp(j.phi..sub.i) to find the standard deviation .sigma..sub.i for each pixel i that produces the desired/average amplitude. Next, we use a pseudo-random number generator to select phases .phi..sub.i from distributions of standard deviation .sigma..sub.i for each pixel. Finally, we check the solution with the FFT and our analyses of performance.

REFERENCES:
patent: 4995102 (1991-02-01), Ichinose et al.
patent: 5012253 (1991-04-01), Schuster et al.
patent: 5142289 (1992-08-01), Petersson
patent: 5184218 (1993-02-01), Gerdes
patent: 5187484 (1993-02-01), Stove
patent: 5252981 (1993-10-01), Grein et al.
patent: 5258996 (1993-11-01), Fraser et al.
patent: 5276636 (1994-01-01), Cohn

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