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2. LED street light - Wikipedia

   en.wikipedia.org/wiki/LED_street_light

   Manufacturing problems can lead to defects of LED street lights resulting in delamination of the phosphor coating layer much sooner than the design life of the lights. This causes the white LED lights to turn blue or purple. [18] The issues of large scale defective lights happened in many cities in United States and Canada. [19] [20]

3. Why are so many street lights out in Milwaukee right now? - AOL

   www.aol.com/why-many-street-lights-milwaukee...

   A purple light is seen 422 N. 15th Street in Milwaukee on Friday, July 2, 2021. Many have noticed purple-hued streetlights on the interstate throughout the Milwaukee area.

4. What's up with the mysterious purple streetlights at the ...

   www.aol.com/news/whats-mysterious-purple...

   An FPL spokesperson explained that over time, some LED streetlights in FPL’s service area are emitting a violet or purple hue rather than the standard white light because of a manufacturer defect.

5. Phase-out of incandescent light bulbs - Wikipedia

   en.wikipedia.org/wiki/Phase-out_of_incandescent...

   Announced in 2011 China has banned imports and sales of certain incandescent light bulbs since October 2012 to encourage the use of alternative lighting sources such as light-emitting diodes (LEDs), with a 5-year plan of phasing-out incandescent light bulbs over 100 watts starting 1 October 2012, and gradually extend the ban to those over 15 ...

6. LED lamp - Wikipedia

   en.wikipedia.org/wiki/LED_lamp

   A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...

7. High-CRI LED lighting - Wikipedia

   en.wikipedia.org/wiki/High-CRI_LED_lighting

   The "warmer" light colors, such as a 2700 K incandescent bulb or a 1700 K candlelight, are more easily reproduced than more neutral white lights, such as 4800 K direct sunlight, and thus usually have higher CRI ratings in alternative light sources such as CFL and LED bulbs; "warmer" light (redder) naturally renders colors less accurately.