Also known as divergent lens, negative lens, concave lens or dispersive lens. A lens that causes parallel light rays to spread out – hence diverge – away from the optical axis once exiting the lens. The lens surfaces
may be plano-concave, double concave or concave-convex. The edge of a diverging lens is always thicker than the center. Parallel light rays entering a diverging lens tend to form virtual images of the object that light ray is originating from.