5.4 Directionality

Thanks to directional nature of the light emission, LEDs have higher application efficiency than other light sources in certain lighting applications.

Fluorescent and standard “bulb” shaped incandescent lamps emit light in all directions. Much of the light produced by the lamp is lost within the fixture, reabsorbed by the lamp, or escapes from the fixture in a direction that is not useful for the intended application. LEDs emit light in a specific direction, reducing the need for reflectors and diffusers that direct the light.

LED light bulb

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