How come no one has suggested tiny screens and huge Fresnel lenses like Terry Gilliam's 'Brazil'? Is this the wrong thread? If you place the apparatus in fron

How come no one has suggested tiny screens and huge Fresnel lenses like Terry Gilliam's 'Brazil'? Is this the wrong thread? If you place the apparatus in front of a window to catch the afternoon sun, it would also harness solar energy in an exciting new way!