via「Google News search」：https://www.ledsmagazine.com/articles/print/volume-15/issue-8/features/last-word/halogen-lighting-heads-into-the-sunset-while-leds-are-on-the-rise.html

Replacing halogen with LED is not a new development. Many users have already benefited from upgrading their lighting. However, LEDs still only make up 10% of lighting systems globally due to the legacy of incandescent and halogen, leaving room for change. With that said, LED is predicted to become the predominant source of lighting over the next decade.
In addition to being significantly more energy efficient, LED lamps offer a considerably longer service life. The average lifespan of LED is said to be approximately 50,000 hr compared to incandescent (1000 hr), halogen (2000 hr), and compact fluorescent lamps (15,000 hr). So while many have bemoaned the cost of LEDs, given their lower energy consumption and longer lifetime, there is no debating that these lamps represent a smart investment.
LEDs have been criticized for limited diversity of color temperatures. Past LED lamps produced cold, white light that failed to mimic the warmth and ambience of halogen and incandescent alternatives.


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