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You would have to be reading way too close to the screen, like your eyeball almost touching it, to intercept the path of the IR emission. IR emissions, like any other light emission, travels only in a straight line. It can be bent by refraction or reflection, but it still follows a straight line when it is no longer being bent. There is a sheet of black IR transmissive plastic that bends the IR at its edges and directs it across the screen.
Luck;
Ken
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