Incidentally, I believe that the backlit pattern, in the grand tradition of the old TOS hero comms, uses an Edmund Scientific moire pattern, though just a single layer of it.
Sort of like the one on the right here…
The circular thing on top is a brass photo-etched model part that someone more familiar with military models can hopefully help identify.
This kind of thing is the general idea though:
I know the Mark VII tricorders use a photo-etched brass part from a Titanic model as a sensor palette greeble.