A proximity and light sensing device including a light emitting compartment having a light emitter positioned on a substrate and an optical element positioned along a side of the light emitter opposite the substrate. The device further including a light receiving compartment including a light detector positioned on the substrate and an optical element positioned along a side of the light detector opposite the substrate. A mid wall extends in a direction substantially normal to the substrate and is positioned between the light emitting compartment and the light receiving compartment. The device further includes a reflective element positioned at a side of the mid wall facing the light receiving compartment, the reflective element capable of reflecting an off-axis light beam onto the light detector so as to form a real image on the light detector of an otherwise virtual image formed behind the reflector. Other embodiments are also described.