WTF?
A reflector behind the display? You mean like the Psion 3a? Or most Gameboys? Or any number of cheap thrown-together-in-China "PDAs" (and I use that term very loosely)? Or pretty much any digital watch with an LCD? (though I thought the 80s LED ones were so cool...)
As for the light gathering, with umbrellas and tubes. WTF? Isn't the purpose of an iWhatever to be small, compact, and perfectly formed? Who is going to unpack all THAT kit just to see the display a little bit better?
Oh, and I suspect there may be elements of prior art here too - I'm sure I can remember about a decade ago an umbrella-shaped thing that used solar panel detection to follow the sun. The purpose was to concentrate the sunlight into the "umbrella" which was a bunch of solar panels. This would then power some sort of ultra-low powered computing device. It was intended to be used in Africa, and capable of running purely off sunlight power if necessary, though a lead-acid was part of the kit...
...but then, I was just about to hit "Submit" when I had an amusing hiccup of the imagination. Poor Apple user thinking his computer was on the fritz because the already dim screen was going lighter and darker, when what really happened was the sky clouded over and the poor umbrella-light-tubes jobbie was hunting for the best light source and not finding anything worthwhile. Come on, tell me that wouldn't be amusing to watch...