Patent ID: 8797645
Filing Date: 2014-08-05
Classification: G02B

Abstract:
1. A method for the optical detection of an illuminated specimen, wherein illuminating light impinges in a spatially structured manner in at least one plane on the specimen, and several images of the specimen are acquired by a detector in different positions of the structure on the specimen, from which images an optical sectional image or an image with enhanced resolution is calculated, comprising: generating a diffraction pattern in the direction of the specimen in or near the pupil of the objective lens or in a plane conjugate to said pupil, and dedicating a phase plate with regions of varying phase delays to, said diffraction pattern in or near the pupil of the objective lens or in a plane conjugate to said pupil, which phase plate is moved in order to set different phase angles of the illuminating light for at least one diffraction order on the specimen, wherein the illuminating light is structured by a spatially periodic structure located in an intermediate image plane.