With Bulb Style LEDs, (1.8mm, 3mm, and 5mm) the light emitting diode is encased in epoxy. The epoxy is globe shaped. This shape provides directional lighting similar to a flashlight. You can sand the globe shaped tip of the LED flat. This will disperse the light over a wider angle. When sanding the light, just sand it until it is flat. Do not go near the metal you can see inside the bulb.