This causes parallel rays to diverge. They separate but appear to come from a principal focus F on the other side of the lens. In a ray diagram, a diverging lens is drawn as a vertical line with ...

A lens can be converging (convex) or diverging (concave). The centre of the lens is called the optical centre C. In a ray diagram, a converging lens is drawn as a vertical line with outward facing ...

And when we construct a ray diagram for a diverging lens, there are a few key differences. First of all, the focal point F is on the same side as the object and F prime is on the opposite side.