Varioscope lens and microscope with the same

摘要

The unit (1) has positive and negative components e.g. convex lens (9) and concave lens (11), including first termination lens surfaces (25, 27) respectively configured to be concave when viewed in an observation direction (B). A second termination lens surface (29) of the negative component is configured to be convex when viewed in the observation direction. Each of the first lens surfaces of the positive and negative components have a radius of curvature with an absolute value of 500 mm while the second lens surface of the negative component has a radius of curvature with an absolute value of 70 mm. An independent claim is also included for a microscope.