Principal plane

What is Principal plane?

Principal plane definition and meaning on Dictionary terms:
noun Optics.
a plane that is perpendicular to the axis of a lens, mirror, or other optical system and at which rays diverging from a focal point are deviated parallel to the axis or at which rays parallel to the axis are deviated to converge to a focal point.

 

reference: www.dictionary.com/browse/principal-plane

Tags: