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    Why are lenses preferred over reflectors for many LED luminaires?


    LEDs are directional sources of light rather than omni-directional from traditional sources of light. For LEDs with reflectors, much of the light at the centre of the beam passes out of the system without even touching the reflector. This reduces the scope of modulating the beam of light and is a very visible source of glare. Lenses help guide virtually every ray of light emitted by the LED.