Patent ID: 11870492
Assignee: APPLE INC.
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 18:
19. An electronic device for free-space optical communication comprising:
a first substrate comprising a circuit;
a photosensitive element coupled to the first substrate and to the circuit;
an optical adapter positioned over the photosensitive element having a trapezoidal profile tapering toward the photosensitive element; and
a second substrate defined by a body having a thickness, the body defining a first face and a second face opposite the first face, the second substrate:
positioned above the first substrate; and
extending along at least a portion of a length of the first substrate, the second substrate comprising:
a first convex protrusion proud of the first face; and
a second convex protrusion aligned with an optical axis of the first convex protrusion, the second convex protrusion proud of the second face such that light incident to the convex protrusion is focused toward the second convex protrusion, which in turn focuses the light into the optical adapter so as to be received at the photosensitive element.