Optical lens system for a warning light and such a light have convex Fresnel collecting lens on one side of LED and undulations on the other

摘要

An optical lens system (10) for a warning light comprises a collecting lens (11) that is a convex Fresnel lens on a first side of a light source with a number of undulations on the other side. Preferably the Fresnel lens is aspherical. An independent claim is also included for a warning light comprising the above system.