Stereo=microscope with illumination front lens

摘要

The observation front lens (12) is for the parallel alignment of a ray from the observation light (L1,L1') emitted by a lens point (B1,B2). An illumination lens (13) projects a ray from the illumination light (L2) onto the lens point. The observation front lens and illumination lens are separated. The observation front lens has a movable (19) and a fixed (18) lens. The movable lens is moved to-and-fro along its optical axis to alter the position of the lens point. The fixed lens has a cut edge parallel to the plane containing the optical axes of a right and left optical observation path. The observation lens is positioned near to the cut edge of the fixed lens.