Variable stop, lighting device, optical observation device as well as an optical observation device

摘要

It is, inter alia, a variable stop (40) for a lighting device (35) and / or for an observation device within an optical observation device (10) for imaging an object (11) and / or one of a object intermediate image, in particular for a stereoscopic observation instrument, is described, the variable stop (40) for at least one beam path (30) of the illuminating device (35) and / or for an optical path (20) of the observation device is provided. According to the invention, the variable stop (40) for generating a certain illumination geometry in some regions, can be controlled. Furthermore, the variable stop (40) for the use of all directions of polarization of the light of a light source. Furthermore, also a lighting device, an optical observation device as well as an optical observation device described.