I need to produce a lens which can produce a focus infinitely far away, effectively producing rays which are parallel to each other. However the tricky bit comes where:
-the light entering the lens comes from random angles (but only into the desired side)
-preferably the design would be scalable...
Is it possible to design a lens which would 'focus' scattered light. However, rather than producing a point across which all light would pass, the light would need to exit the lens(es) on parallel paths. I don't necessarily need a design (although if it exists that would be great) but rather...
