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Light emitting diodes, or LEDs, are amongst the most efficient light sources ever developed. In terms of energy efficiency, light emitting diodes are capable of producing the optical output of an incandescent light bulb, by consuming one hundred times less energy. The problem is that LEDs can't compete with incandescent light bulbs when it comes to high light outputs. One way to correct this at relatively low costs would be to concentrate the light generated by the LED exactly on the spo... Read »