Abstract: For improved imaging in a visualization system (1) having two image sensors (2a, 2b), which are spaced apart from one another axially with respect to a longitudinal axis (27) of the visualization system (1) and sensorially acquire a respective imaging beam path (4a, 4b), which is generated by an assigned imaging optical unit (31) upstream of a deflection prism (3), it is provided that a structural height of the prism (3) be made suboptimal, in order to thus be able to alleviate imaging errors upon use of a wavelength-selective first mirror surface (8) of the prism (3). Moreover, it is alternatively or additionally provided that two optical channels (16a) and (16b) be formed by the imaging optical unit (31), through which the image sensors (2a) and (2b), preferably in different wavelength ranges, can each acquire images of an object (37) observed using the visualization system (1) from different perspectives.

Abstract: An optic light guide includes a plurality of light-guiding single fibres which are combined into a bundle and at least one sheath which encloses at least one section of an outer circumference of the bundle, the at least one sheath being made of ceramic. The optic light guide may be arranged in an area of a tip of an endoscope.

Abstract: To improve the imaging while simultaneously simplifying the manufacturing of a rigid endoscope (2), an inversion system (1) is used as a relay optical unit for the image transfer from an objective (3) to a proximally arranged camera unit (4) of the endoscope (2). The inversion system has an odd number of a first type A of rod lenses (7) and an even number of a second type B of rod lenses (7), which are each arranged on half of the inversion system (1) with respect to a center plane (9) of the inversion system (1).