Filter Changing Apparatus for an Endoscopic Camera, Camera Head for an Endoscope, and Retrofit Kit for Retrofitting a Camera Head or an Endoscope

A camera head for an endoscope, wherein the camera head includes an image sensor, an opening for receiving light of an image along an optical path and an optical lens system for focusing the light on the image sensor, wherein in that the camera head further includes at least one filter changing apparatus, the filter changing apparatus including a base plate, a rotatable filter plate, an optical passage with an optical axis and at least two pivotable filter holders, each with at least one receptacle for an optical filter, wherein the rotatable filter plate has a guide groove with a circumferential guide track and is rotatable relative to the base plate, the filter holders are each arranged rotatably on the base plate by means of a rotation axle and each have a guide element, wherein each guide element is at least partially arranged in the guide groove, characterized in that the guide groove has a first portion, concentric with the optical axis, and a second portion, non-concentric with the optical axis, so that, when at least one guide element is arranged in the concentric portion, the particular filter holder is arranged in an initial position, free of the optical passage, and/or, when at least one guide element is arranged in the second, non-concentric portion, the associated filter holder can be pivoted into the optical passage.

A retrofit kit for retrofitting a camera head or an endoscope, characterized in that the retrofit kit has at least one filter changing apparatus that can be arranged between a proximal end of the endoscope and a distal end of the camera head, wherein the at least one filter changing apparatus includes a base plate, a rotatable filter plate, an optical passage with an optical axis and at least two pivotable filter holders, each with at least one receptacle for an optical filter, wherein the rotatable filter plate has a guide groove with a circumferential guide track and is rotatable relative to the base plate, the filter holders are each arranged rotatably on the base plate by means of a rotation axle and each have a guide element, wherein each guide element is at least partially arranged in the guide groove, characterized in that the guide groove has a first portion, concentric with the optical axis, and a second portion, non-concentric with the optical axis, so that, when at least one guide element is arranged in the concentric portion, the particular filter holder is arranged in an initial position, free of the optical passage, and/or, when at least one guide element is arranged in the second, non-concentric portion, the associated filter holder can be pivoted into the optical passage.