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A PHASE‐CONTRAST MICROSCOPE WITH VARIABLE AMPLITUDE AND PHASE
Author(s) -
Patne B. O.
Publication year - 1950
Publication title -
journal of the royal microscopical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0368-3974
DOI - 10.1111/j.1365-2818.1950.tb04430.x
Subject(s) - optics , amplitude , phase (matter) , microscope , analyser , optical microscope , diffraction , relative phase , phase contrast microscopy , vibration , physics , contrast (vision) , materials science , acoustics , scanning electron microscope , quantum mechanics
SYNOPSIS. A phase‐contrast microscope is described in which the properties of polarized light are employed in order to vary the relative amplitudes and phases of the direct and diffracted beams over a wide range. The two beams, which are plane polarized, have their vibration directions rendered orthogonal by passage through a quartz phase plate. Phase differences are introduced by means of a Soleil‐type compensator and a rotating analyser enables the relative amplitudes to be controlled.