Single-use endoscopes show a steady growth in medical applications due to the advantage of omitted cross-patient infections. The devices benefit in terms of the imaging optics from the developments in wafer-level-optics (WLO) which was once considered to become the fabrication technique for all high volume applications. However, the restrictions in achievable vertex heights of the lenses, the necessity of the glass wafers within the optical path and the limited number of lenses per stack are still obstacles when targeting resolutions beyond HD.