| 摘要 |
A microscope comprising a main objective having a variable focal length and comprising an illuminating unit including a light source and an illuminating optical system for generating an illuminating beam path directed onto the object plane and extending outside the main objective. A unit is provided for centering the illumination dependent on a variation of the focal length of the main objective. The illuminating optical system is mounted at least in part in a laterally shiftable manner for centering the illumination.
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