LED
Noun
What Is an LED?
An LED (light-emitting diode) is a semiconductor device that emits light when an electrical current flows through it. LEDs are used in a wide range of lighting applications, from smartphones to marine navigation systems, thanks to their efficiency, durability, and directional light output.
Common Applications of LEDs
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Displays: Smartphones, TVs, and digital signage
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Lighting Fixtures: Household bulbs, task lamps, strip lighting
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Automotive & Marine: Headlights, taillights, cabin, and underwater lighting
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Industrial & Commercial: Floodlights, panel lights, indicators
How LEDs Work
Unlike incandescent bulbs, which convert electricity into heat before producing light, LEDs generate light directly from electrical energy. This makes them:
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Cooler (less heat output)
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More efficient (less energy waste)
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Longer lasting (fewer replacements)
LEDs emit light in a specific direction, which reduces the need for reflectors or diffusers. With traditional bulbs, over half of the light may be lost inside the fixture.
Efficiency and Dimmability
LEDs use significantly less power and can be paired with dimmable systems. By regulating the current, you can smoothly control brightness without flicker or performance loss—ideal for marine, residential, and commercial lighting.
Lifespan Comparison
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LEDs: 30,000–50,000 hours
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CFLs: ~8,000 hours
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Incandescents: ~1,000 hours
LEDs last longer and have lower maintenance costs, making them ideal for both everyday use and hard-to-access installations like boat decks or ceilings.
Example in a Sentence
“DRSA offers a wide selection of LED lighting systems built for marine use, from courtesy lights to underwater LEDs.”
Related Lighting Terms
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Dimmable – Lights with adjustable brightness
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Light Bulb Socket – The connection point for installing a light bulb