Azimuthal Walsh Filters by Indrani Bhattacharya & Lakshminarayan Hazra

Author:Indrani Bhattacharya & Lakshminarayan Hazra
Language: eng
Format: epub
ISBN: 9789811560996
Publisher: Springer Singapore

3.2 Transverse Intensity Distributions for Zero Order Azimuthal Walsh Filter on the Far-Field Plane

Azimuthal Walsh filter of order zero is placed on the exit pupil plane of a rotationally symmetric imaging system and the normalized transverse intensity distribution on the far-field plane is computed and plotted in Fig. 3.1.

Fig. 3.1The normalized intensity distribution at far-field plane due to zero order azimuthal Walsh filter on exit pupil

The logarithmic plot of transverse intensity distribution due to zero order azimuthal Walsh function is also computed and shown in Fig. 3.2 where the central maxima is at the origin.

Fig. 3.2The intensity distribution at far-field plane is plotted on log scale due to zero order azimuthal Walsh filter on exit pupil

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