1. A solid catadioptric lens having a single viewpoint on an optical axis and comprising: a) a spherical refractive surface having a center C on said optical axis; b) an ellipsoidal reflective surface facing said spherical refractive surface and having a first focus F 1 coincident with said center C, whereby said center C is said single viewpoint; and c) a shaping surface facing said ellipsoidal reflective surface for shaping a light passing said single viewpoint.