How LED Light Bulbs Work?

- Jul 06, 2019-

How LED Light Bulbs Work?


The light bulb that has lit up our homes since the 1800s is officially on its way out. The inefficient incandescent, which loses most of its energy as heat, has fallen out of favor with the financially and ecologically concerned; starting in 2012, U.S. residents won't be able to buy one even if they want to buy it. The government is taking the little energy suckers off the market.


The prime replacement for the incandescent light bulb is the higher-efficiency compact fluorescent, or CFL. The CFL, though, has its own problems, primarily the inclusion of toxic mercury in the design and a strange, sometimes unpleasant color that even gives some people headaches.

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LED Light Bulb Basics

An LED is what's called a "solid-state lighting" technology, or SSL. Basically, instead of emitting light from a vacuum (as in an incandescent bulb) or a gas (as in a CFL), an SSL emits light from a piece of solid matter. In the case of a traditional LED, that piece of matter is a semiconductor.


Stated very simply, an LED produces light when electrons move around within its semiconductor structure.

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Advantages of LED Light Bulbs

While you won't find LEDs in too many household lighting fixtures these days, there are a couple of good reasons to want them there in greater numbers.


First, there's the reduced energy use. The LED method of producing light loses far less energy to heat than do other lighting technologies. It's dramatically more efficient than the vacuum/filament method used in incandescent bulbs -- sometimes around 85 percent more efficient; and it's even about 5 percent more efficient than the CFL's plasma-tube approach.


LED technology allows for ground-breaking designs of inspiring purity and beauty. JUNON lighting factory has been focusing on LED bulbs, LED down light, LED tube, LED spot light and LED ceiling lamp for 10 years. If you have any questions on LED products, please feel free to contact us.