I bought a 120 degree lens to mount 6V LEDs on a cargo bike. These are smaller 5mm diameter LEDs with no circuit board. They appear to be made for a PCB mounted LED, but still work for my purposes. I need to find something that will fit inside the case and just glue it together with hot glue/epoxy. In general, the light output seems to be a little better bundled and more widely spread in the middle. This makes the LED look better from a distance. I'm sure one of the more focused beams would have helped more, but I wanted a wider field of view.
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