Method and apparatus of Fourier manipulation in an optic lens or

Details Method and apparatus of Fourier manipulation in an optic lens or Method and apparatus of Fourier manipulation in an optic lens or

1996-11-26

1999-09-28

Spyrou, Cassandra

Optical: systems and elements

Diffraction

Using fourier transform spatial filtering

359559, 359564, 382265, G02B 2746, G06K 940

Patent

active

059597763

ABSTRACT:
An optical system is provided with an adaptable window element at a Fourier plane for spatial filtering. Having a window element made up of individually addressable pixels provides a substantial improvement in the spatial filtering adaptability and precision. When combined with a computer and sensor, the window may become part of a negative feedback loop, thereby providing the optical system with more consistent reproducibility, higher reliability with graceful degradation, and more precise control over final results.

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