Shield for a luminous diode has an outer surface, first and second openings opposite each other with respective small and larger diameters and a concave recess

摘要

A concave recess (11) in a shield for a luminous diode (10) links to a first opening with a diameter and to a second opening opposite the first with a larger diameter than the diameter of the first. Multiple ring-shaped groups of convex mirrors are created coaxially on an inner surface (12).