LOL!
I can't see a periscope thingy working all that well on an already light limited small sensor.
Even tho materials have progressed to an awesome level now, with more awesome to come .. they're going to lost a fair amount of light via the use of at least two mirrors in a periscope design.

Even if that loss of light is only 1/6Ev .. it's still 1/6th less than the non periscope type sensor module.


I reckon it's one of those things that they needed to design simply to hold the rights to such a design.