Observation Instrument and Video Imager Arrangement Therefor

A video imager arrangement for an observation instrument having a shaft, wherein the video imager arrangement comprises an imaging unit, the imaging unit comprising an objective lens system, the objective lens system comprising a plurality of optical elements, the optical elements of the objective lens system being fixedly positioned relative to each other within a sleeve, and an electronic image sensor arranged for picking up an image generated by the objective lens system, the imaging unit being pivotably arrangeable in a distal end section of the shaft, a pivot axis of the imaging unit being transverse to a longitudinal axis of the distal end section of the shaft, characterized in that the image sensor is arranged substantially parallel to an optical axis of the objective lens system and that the imaging unit comprises a deflection element for deflecting light exiting from an image end of the objective lens system to an image pick-up surface of the image sensor.