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G02B15/00—Optical objectives with means for varying the magnification
G02B15/02—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective
G02B15/04—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective by changing a part
Stereomikroskop nach dem Greenough-Typ, optische Baugruppe zur Einstellung eines Stereowinkels in einem Stereomikroskop nach dem Greenough-Typ und Varioabbildungssystem für ein Stereomikroskop nach dem Greenough-Typ