MONEYMADE great summation: I know you were looking for an AEROSPACE connection from my conversation with him. Do you know Don has a patented optical/thermal process.
In my coversation with Don he stated that in the AEROSPACE industry Don and his engineers patented the display optics used in cockpits of planes. Not sure how this fits in but I believe the solar IR Patents have patented optical covers that channel the IR frquencies with HUGE efficiencies to the patented IR substrates below.
So channeling of Infared through optics is important to the getting the efficiencies of the Solar paneling.