Microscope adapted for the generation of various contrast types: theory and experiment.
With the aid of a polarizer, an analyzer, and two birefringent double plates placed in conjugate positions at the front focal plane of the condenser and the rear focal plane of the objective, respectively, a microscope is adapted to generate in a pure form one of four contrast types, i.e., either phase or amplitude differential or nondifferential. The theory of such an arrangement is discussed, and some practical results are shown.
de Lang
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Dekkers
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