The dependence of image contrast on the position of the phase-ring on a phase contrast objective is studied for simple periodic phase objects illuminated by partially coherent light. Graphical relations between the object frequency and the position of the phase-ring for maximum image contrast are provided.
© 1970 Optical Society of America
Original Manuscript: December 24, 1969
Published: August 1, 1970
P. K. Mondal and S. Slansky, "Influence de la position de l’anneau de phase sur le contraste de l’image dans un objectif à contraste dephase," Appl. Opt. 9, 1879-1882 (1970)
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