Tech Info >> L.E.D. Lighting Technology > Light Emitting Diode (LED): A semiconductor crystal chip which, when activated by a relatively low electrical current, emits extremely precise wavelengths of light with efficiency and precision that conventional lighting cannot match. LED components are encased in a durable, high-strength, optical grade epoxy. LEDs are highly efficient and typically consume about 1/10 power consumption and are expected to last up to 50 times longer than a traditional incandescent bulb. LEDs are solid state and illuminate approximately 200 milliseconds faster than a incandescent bulb. This allows motorists to react quicker to changing traffic conditions. Because the light output from LEDs is pure and direct, it is not as easily diffused by other interfering light sources such as sunlight, reflections or glare.   LED Bulb: Aftermarket LED replacement bulbs are typically manufactured overseas. A handful of LEDs are mounted into a base designed to replace your typical parking, signal, or brake lamp bulb. Unscrupulous manufacturers do not take into account that LEDs create light much differently than your typical halogen bulb. Osram Joule: Designed by Osram, these LED bulbs utilize a heatsink design in order to maximize light output. Various LEDs are discretely mounted and aimed at the center optic which spreads the light evenly. Interesting and clever design.