Patent ID: 8218234
Filing Date: 2012-07-10
Classification: A61B,G02B

Abstract:
1. An illumination device for a microscope having observation optics having an objective with a variable working distance between the objective and an object plane and having an optical axis comprising: a light source that emits light that selectively follows multiple light paths; and at least one deviating optic having at least two at least partially reflective surfaces, wherein, for each of the multiple light paths, the at least one deviating optic splits the light into at least two beam paths having optical axes that intersect the object plane and that define respective angles with respect to the optical axis of the observation optics, wherein a change from one of the multiple light paths to another changes the respective angles and the working distance, wherein the at least two at least partially reflective surfaces are in the same position and orientation with respect to the objective at multiple working distances, and wherein at least one of the beam paths reflects at each of the at least two at least partially reflective surfaces.