“节能灯伤眼睛损视力，护眼效果还不如白炽灯！”的说法在消费者中很有“市场”，很多人因此抵制“淘汰白炽灯”。这种说法对吗？
"Energy-saving light eye damage eyesight, eye effect is worse than incandescent lamp!" That is the "market" in the consumer, because many people "do". This statement right?
复旦大学电光源研究所副所长张善端指出，白炽灯是热辐射光源，靠高温钨丝发光，温度会达到2500摄氏度到2700摄氏度，发出的光以红外光为主，可见光较少，产生许多电能损失。相反，节能灯温度低，通过低气压汞蒸气放电产生的紫外线激发荧光粉发出可见光，光效更高。
Fudan university institute of electric light source Zhang Shanduan points out, the deputy director of the incandescent light bulb is thermal radiation light source, by high temperature tungsten wire, temperature can reach 2500 degrees to 2700 degrees Celsius, the light is given priority to with infrared and visible light is less, produce many electric energy loss. Energy-saving lamps, on the other hand, low temperature, low pressure mercury vapor discharge to produce ultraviolet excitation of phosphor emit visible light, the higher light efficiency.
张善端认为：“节能灯伤眼的说法是没有科学根据的。荧光灯包括直管荧光灯和紧凑型荧光灯。直管荧光灯自1938年进入市场，使用已快80年了；紧凑型荧光灯（俗称节能灯）于1977年出现，进入市场也快40年的时间。荧光灯是历史上产生光通量最多的光源，如果有问题是不可能用这么久的。高品质的节能灯显色性高，高频工作消除频闪，灯管表面亮度适中，常用于台灯光源。”
Zhang Shanduan said: "the energy-saving lamps eyes there is no scientific basis. Fluorescent lamp includes straight tube fluorescent lamp and compact fluorescent lamps. Straight tube fluorescent lamp into the market since 1938, has used for nearly 80 years; compact fluorescent lamps (commonly known as CFLS) appeared in 1977, to enter the market is almost 40 years. Fluorescent lamp is produced in the history of one of the most luminous flux source, if there is a problem is impossible for so long. High quality energy-saving lamp high color rendering, high frequency work to eliminate stroboscopic, tube surface brightness moderate, often used in lamp light source."
目前“节能灯伤眼”的争论焦点，主要集中在节能灯的频闪和蓝光上。对此，张善端指出，一般情况下，节能灯使用的是电子镇流器，电压和电流的工作频率为20~50千赫兹；对应的光频率加倍，为40~100千赫兹，人眼睛是无法觉察到这么高频率的光信号变化的。不过从工频到高频需要经过直流转换，50赫兹的工频整流滤波后成为100赫兹的脉动直流，再由脉动直流产生的高频交流电使灯发出的光会出现100赫兹的波动，但是这个波动深度对节能灯来说一般在15%以内，波动幅度并不明显。而好的节能灯能够将光波动深度控制在5%以内，频闪无法觉察，不会对眼睛健康造成影响。作为对比，60瓦磨砂白炽灯的光波动深度约为10%。对于LED灯来说，光色跟节能灯差不多，直流工作可消除频闪，用扩散板控制亮度后也可以做成很好的台灯。
The "energy-saving light injury eye" contention, mainly focus on energy-saving light stroboscopic and blu-ray. The Zhang Shanduan pointed out that, in general, energy-saving lamps use electronic ballast, the work frequency of the voltage and current of 20 ~ 50000 hz. The corresponding frequency doubling light, is 40 ~ 100000 hz, people eyes cannot be aware of such a high frequency of optical signal changes. But need to pass the dc from power frequency to high frequency conversion, 50 hz power frequency rectifier filter after become a pulsating dc 100 Hertz, again the high frequency alternating current generated by the pulsating dc light from the lamps will be 100 hz fluctuations, but the fluctuations in depth for energy-saving lamps, generally within 15%, volatility is not obvious. And good energy-saving lamps to light wave depth control within 5%, stroboscopic undetectable, will not affect eye health. In contrast, 60 watts frosted incandescent light wave depth of about 10%. For LED lights, light color with energy-saving lamps, dc work can eliminate stroboscopic, after using diffusion plate control brightness can also make it a good desk lamp.
中国中医科学院眼科医院教授接传红也表示，目前没有确切的临床依据证明“节能灯伤眼”。而对于节能灯蓝光问题，接传红解释，蓝光被认为是除紫外线外，对眼睛伤害最大的高能量可见光，而人眼感觉最舒适的是中波的绿光。蓝光存在的范围非常广，包括手机、电脑的屏幕或多或少都会有蓝光，但存在的剂量不足以对眼睛造成非常大的伤害。当下主要还是由于人们不健康的用眼习惯，导致流泪、眼干等问题。不过，专家提醒，九游J9
最应该警惕的是市场上一些“山寨”企业生产的节能灯，存在粗制滥造等问题，可能会危害视力。
Chinese academy of sciences professor eye hospital of traditional Chinese medicine by the red, also said there is no exact clinical evidence that hurt an eye to "" energy-saving lamps. For the energy-saving light blue light problem, pick up the red, blue is considered to be in addition to the ultraviolet, the biggest energy to eye damage visible light, and the human eye is the most comfortable feeling of medium wave green light. Blu-ray existing range is very wide, including mobile phones, computer screen more or less will have a blue light, but the existence of dose not enough to cause great harm to the eyes. The present mainly because people unhealthy habits with the eye, in tears, dry eye problems. However, the expert reminds, we should be alert to most is some "shanzhai" enterprises in the production of energy-saving lamps on the market, some problems such as manufactured, could harm to eyesight.
