No need for lenses/optics. If you look at the first link (and the cheapest, plus it is the 3w star mounted LED you want), it states •Viewing Angle: 120°-140°, so no need for additional lenses. First link is ideal, second link is 'unmounted' LEDs, much harder to work with, 3rd link is 1w, but as you see, they cost more than the first link.