Specific properties of slit phase-contrast imaging

Dariusz Litwin

doi:10.1117/12.171885

3 May 1994 Specific properties of slit phase-contrast imaging

Dariusz Litwin

Proceedings Volume 1846, Phase Contrast and Differential Interference Contrast Imaging Techniques and Applications; (1994) https://doi.org/10.1117/12.171885
Event: Phase Contrast and Differential Interference Contrast Imaging Techniques and Applications, 1992, Warsaw, Poland

Abstract

Properties and new possible applications of the slit phase contrast (SPhC) technique are presented. They have been tested by the use of an advanced computer simulation program, performing a digital 2D spatial filtering process. A composition of phase objects (e.g., circles, rectangles, gratings, fibers) is transformed into its Fourier form, then multiplied by the transmittance of the phase strip and finally retransformed. Several soot filters have been prepared and applied to a modified, commercial microscope according to the simulation results. The experiments have involved mainly biological specimens. Special attention has been given to measurements of the refractive index profile of the optical fibers. A detailed theoretical background has been presented and results of additional computer simulation based on the operation of convolution have been discussed.

Citation Download Citation

Dariusz Litwin "Specific properties of slit phase-contrast imaging", Proc. SPIE 1846, Phase Contrast and Differential Interference Contrast Imaging Techniques and Applications, (3 May 1994); https://doi.org/10.1117/12.171885

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