Embodiments of the present disclosure provide techniques and configurations for an optoelectronic assembly including a MEMS scanning mirror. In one embodiment, the MEMS scanning mirror may include a micro-scale mirror configured to be rotatable about a chord axis of the mirror to deflect an incident light beam into an exit window of the optoelectronic assembly, and a support structure configured to host the mirror to provide a light delivery field between a mirror surface and the exit window such that a path of the deflected light beam via the provided light delivery field to the exit window is un-obstructed. Other embodiments may be described and/or claimed.