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Abstract

A microscope apparatus includes an illumination optical system that illuminates a sample with illumination light from a light source; an imaging optical system that converges light emitted from the sample to form a sample image by an objective lens; an aperture member disposed in the illumination optical system in the vicinity of a conjugate plane of a rear focal plane of the objective lens and having an aperture for limiting illumination light; and a filter member that includes a phase plate disposed in the imaging optical system in the vicinity of the objective lens rear focal plane or in the vicinity of the conjugate plane of the objective lens rear focal plane and having first and second phase areas introducing a 180-degree phase difference into the light from the sample; a phase boundary portion between the first and second phase areas being disposed in a conjugate aperture of the aperture.

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First Claim