1、well-collimated beam
2、However, such a divergent beam can be transformed into a collimated beam by means of a lens.
3、If a monocentric system existed for which an incident collimated beam emerged as exactly collimated, then the system would give geometrically perfect imaging of any point in space.
4、The optical system includes at least one lens element, which outputs the light in a collimated beam on the oscillating reflector regardless of an orientation of the oscillating reflector.
