| 摘要 |
An illumination device for a microscope has a variable working distance (d, d′), at which an object is illuminated obliquely from two different directions. Light from a light source is split into at least two illumination beam paths. In order to adapt to the different working distances, the light is subjected to an angle change before splitting or, if after splitting, then respectively by the same amount in both beam paths. A deviating element with at least two reflective surfaces is arranged in one of the illumination beam paths to induce a change in an angle at which one of the illumination beam paths strikes the object, in the same sense as another illumination beam path. The reflective surfaces may be arranged so that the illumination beam paths strike essentially the same region of the optical axis even with different working distances. |
