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Aren’t all LED lights highly efficient and long-lasting?

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Date:2015-03-12
Not necessarily. LEDs have been efficient and long lasting as indicator lights in electronics for years, but using LEDs to create stable white light for general lighting presents new challenges. The key to success is smart design. LED lighting products must pass a variety of tests to prove that the products will display the following characteristics:
 
Brightness is equal to or greater than existing lighting technologies (incandescent or fluorescent) and light is well distributed over the area lighted by the fixture.
Light output remains constant over time, only decreasing towards the end of the rated lifetime (at least 25,000 hours or 22 years based on use of 3 hours per day).
Excellent color quality. The shade of white light appears clear and consistent over time.
Efficiency is as good as or better than fluorescent lighting.
Light comes on instantly when turned on.
No flicker when dimmed.
 
No off-state power draw. The fixture does not use power when it is turned off, with the exception of external controls, whose power should not exceed 0.5 watts in the off state.
 
Bad design can lead to a wide range of problems, some immediately observable and some not. Poorly designed products often come with exaggerated claims while failing to deliver on the quality specifications above.


 

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