Filter exchange device for a two-stroke optical observation instrument, optical observation instrument and procedure for changing a filter of an optical observation instrument

摘要

The invention concerns a filter exchange device for a two-way optical observation instrument, in particular for a stereoscopic observation instrument, in particular for a stereo video endoscope, a stereo exoscope or a stereo operating microscope (101),where the filter changer is a first filter wheel (103),has a second filter wheel (105) and a third filter wheel (107), with the filter wheels (103, 105, 107) arranged along a common axis consecutively and rotatable around the common axis and towards each other. Each filter wheel (103, 105, 107) shall have at least one filter (131, 133, 135) and at least one free optical passage (137), so that in each of the two radiations a filter (131, 133, 135) or a free optical passage (137) of each filter wheel (103, 105,107) is transferable. The second filter wheel (105) is drivable and the first filter wheel (103) is coupled with the second filter wheel (105) via a first receiver and the third filter wheel (107) via a second receiver. In addition, the invention concerns an optical observation instrument with two radiations, in particular a stereo video endoscope, a stereo exoscope or a stereo operating microscope, and a procedure for changing a filter of an optical observation instrument.