Method and arrangement for deeply resolved optical detection of a sample
View Patent ↗A method and arrangement for the depth-resolved optical detection of a specimen with an illumination light distribution of at least one wavelength generated on or in a specimen and detection particularly of the light that is influenced due to interaction with the specimen, particularly fluorescent light and/or reflected light and/or luminescent light and/or scattered and/or transmitted light, wherein the illumination light has a modulation in at least one spatial direction and the detection light which is modulated like the illumination light is spatially split into two components having a phase shift relative to one another, the components are measured separately and an optical section image of the specimen and/or of part of the specimen is calculated from them.
1. A prismatic element for use in a microscope adapted to perform depth-resolved optical detection of a specimen with an illumination light distribution of at least one wavelength generated on or in a specimen and detection light that is influenced due to interaction with the specimen, the prismatic element comprising:
at least one region which is plane-parallel; and
a second prismatic region which carries out an angular deflection between the illumination light and detection light and which is arranged in a pupil plane of the microscope.
2. The prismatic element according to claim 1 , wherein a spatial separation of the detection light from an excitation light is carried out in an intermediate image plane.
3. The prismatic element according to claim 1 , wherein a spatial separation of the spectral components of the specimen signal is carried out by the prismatic surface of the element and these spectral components are measured by a detector array.
4. The prismatic element according to claim 1 , wherein a spatial separation of the spectral components of an excitation light is carried out through the prismatic surface of the element and the spectral components are combined to form a common beam in the specimen.
5. The prismatic element according to claim 1 , wherein the prismatic element has a plane-parallel plate in the center and is formed prismatically outside the plate.
6. The prismatic element according to claim 1 , wherein a plane-parallel plate has an elongated shape and there is a wedge-shaped reduction in the prismatic arrangement in longitudinal direction of the plate.