HARTLEY TRANSFORMATION BY AN INVERTING INTERFEROMETER

摘要

A new optical configuration is proposed for the optical implementation of Hartley trans- form. A Sagnac type interferometer with an afocal imaging system inside it constitutes a typical imaging block which synthesizes the image and its inverted version from an input object transparency. These two image distributions are coherently added with a phase difference of π/2 using a polarization technique and are Fourier transformed to yield the Hartley transform. Experimental demonstration is also presented.