Light field imaging with scanning optical unit

An optical device for light field imaging, wherein the optical device comprises:

• a light source configured to emit light along an optical path,
• a detector,
• a sample holder, which is arranged in the optical path downstream of the light source and upstream of the detector and which is configured to fix an object in the optical path of light,
• a scanning optical unit, which is arranged in the optical path downstream of the sample holder and upstream of the detector and which is configured, for each of a multiplicity of scanning positions, selectively to direct light incident from different angular ranges from the object onto the detector,
• wherein the detector is configured to detect measurement data for each of the multiplicity of scanning positions, and
• a computing unit, which is coupled to the detector and which is configured, on the basis of a three-dimensional light field represented by the measurement data of the multiplicity of scanning positions to generate a spatially resolved imaging of the object that comprises at least two images from different object planes of the object;
• wherein the optical device furthermore comprises a field stop arranged in an image plane of the scanning optical unit;
• wherein the optical device furthermore comprises a collimator optical unit,
• wherein the collimator optical unit is arranged in the optical path downstream of the scanning optical unit and upstream of the detector,
• wherein the collimator optical unit is configured in each case to focus the angular ranges of the light which passes through a field stop onto a pixel of the detector,
• wherein the optical device comprises a movable stage, which is movable between a first position and a second position,
• wherein the collimator optical unit is coupled to the movable stage,
• wherein the collimator optical unit is positioned in the optical path in the first position of the movable stage,
• wherein the collimator optical unit is not positioned in the optical path in the second position of the movable stage,
• wherein the field stop is coupled to the movable stage,
• wherein the field stop is positioned in the optical path in the first position of the movable stage, and
• wherein the field stop is not positioned in the optical path in the second position of the movable stage.