Patent ID: 8922983

Claim:
A mobile device comprising: a plurality of emitters mounted on a logic board; a plurality of receivers mounted on the logic board; a frame; a metal support structure, mounted to the frame, the metal support structure having: a substantially flat front side configured to support a display, a honeycombed back side configured to: provide rigidity to the mobile device while keeping a weight below a weight threshold; and support the logic board; and a plurality of slots around a periphery of the metal support structure, configured to permit the plurality of emitters mounted on the logic board to project infrared beams to the plurality of receivers mounted on the logic board; a front cover attached to a front of the frame; a back cover attached to a back of the frame; and a light guide mounted to the substantially flat front side of the metal support structure, wherein the light guide is to receive, from a first emitter of the plurality of emitters, one of the infrared beams through a first slot of the plurality of slots at a first side of the metal support structure and guide the one infrared beam through a second slot of the plurality of slots at an opposite side of the metal support structure and into a first receiver of the plurality of receivers.