下面的一大段英文是从美国能源部网摘录的：
When shopping for lighting, you can now use the Lighting Facts label and lumens to compare bulbs and purchase a bulb with the amount of brightness you want.
The Lighting Facts Label
The Federal Trade Commission requires the Lighting Facts label on all light bulb packages to help consumers easily compare energy-efficient bulbs. The label includes:
Brightness, measured in lumens
Estimated yearly energy cost (similar to the EnergyGuide label)
Lifespan
Light appearance (from warm to cool)
Light appearance, measured by correlated color temperature (CCT) on the Kelvin (K) scale, from warm to cool.
Like the helpful nutrition label on food products, the Lighting Facts label helps you to understand exactly what you are buying and to buy the lightbulbs that are right for you.
Lumens: A New Way to Shop for Light
In the past, we bought lightbulbs based on how much energy, or watts, they use. Wouldn't it make more sense to buy lights based on how much light they provide?
When you're shopping for lightbulbs, you can choose your next lightbulb for the brightness you want by comparing lumens instead of watts. A lumen is a measure of the amount of brightness of a lightbulb -- the higher the number of lumens, the brighter the lightbulb.
If you're replacing an inefficient 100W bulb, look for an energy-saving bulb that puts out about 1600 lumens. To replac a 60W equivalent, look for a bulb with about 800 lumens.
So when you're looking for a new bulb, look for lumens -- or how bright the bulb is. Now that's a pretty bright idea!
译文如下：
当你在购物照明类产品时，您现在可以参考照明类产品上所贴的参数标签上的流明值来进行比较，从而选择你所想购买的产品。
照明参数标签
联邦贸易委员会要求所有灯泡包装上的照明事实标签上的内容可以很容易的帮助消费者对节能灯泡进行比较。标签内容包括：
•亮度，实际测试所得到的流明值。
•估计每年可节省的能源价值
•寿命
•光色（由暖色到冷色），是通过相关色温度测量值（CCT）单位是开尔文（K），从低色温的暖色到高色温的冷色。
就像营养品上的标签的一样，照明参数标签可以帮助您准确地了解您所购买的灯泡以及怎样购买到最适合您的灯泡。
流明值：挑选灯具的新方法
以前，我们买灯泡是基于消耗多少能量或者所消耗的瓦特数来衡量。用一个灯泡能发出多少光通量来辨别不是更有意义吗？当你准备买一个灯泡，你可以基于亮度来选择你想要买的灯泡，而不是灯的瓦数。流明值是衡量一个灯泡亮度的单位——流明数越高，灯泡就越亮。如果你替代以前低能效100W的灯泡，选择可以输出1600流明光通量的节能灯泡就可以了。取代60W，购买一个可以输出800流明灯泡即可。所以当你正在准备买新的灯泡，关注流明值——多亮的灯泡。这是一个很好的办法！
看到美国能源部网站上的这条信息，很直观的告诉消费者如何挑选，在做消费这培训的事情。如果国内的产业联盟也能这么实在的为消费者考虑，将我们的产业将会发展的更好！当然了，如何挑选灯泡不仅仅是依靠光通量量判断。
