In recent years,
More and more children with myopia are.
In order to let children do their homework at home,
The eyes are less damaged,
Many parents have specially prepared LED desk lamps.
But have you ever thought about it,
Is your LED light really safe?
inferior LED lamps are harmful but not good
Parents believe that the desk lamps using LED bulbs are more power-saving and environmentally friendly. More importantly, the lighting effect is much higher than that of ordinary incandescent lamps , which is conducive to protecting children's eyes.
In fact, some LED lights have severe strobes. Learning under such light for a long time will cause visual fatigue, headaches, and even cause photosensitive epilepsy, resulting in vision loss and distraction. has many harms to the child's health but no benefit!
CCTV program
This inferior LED light
Let’s take a look at
different LED lights The strobe difference is huge
Different LED lights The difference between strobes and
strobes. Simply put, when looking at the screen of another electrical appliance on the screen of an electrical appliance, the screen of another electrical appliance will have a bright line from the bottom of the screen to the top and appear from the bottom. If this continues infinitely, gives us the feeling that the image is flickering. The lower the strobe, the less damage it will be to the eyes. But it is actually impossible to have a strobe-free in the absolute sense. The strobe-free requirement of qualified products by Chinese industry standards is 3125Hz.
In the experiment, the two LED lights with almost exactly the same appearance have a huge difference in strobeness under professional testing instruments.
The first desk lamp has a gentle waveform and almost zero strobes.
The second desk lamp has a very large waveform, indicating that the strobe is serious.
Use the mobile phone camera to quickly identify strobe
1 LED lights with such a huge difference in strobe , but there is almost no difference in the naked eye. So in daily life, how should we distinguish the pros and cons of LED light bulbs? Don't worry, I'll give you some advice!
When selecting an LED light bulb, just take out the mobile phone you carry with you, turns on the camera function, point the lens at the lit light bulb, and you can tell the difference at a glance.
strobe low light bulbs, and light bulbs with low strobe high will not be much different from those under the lens and under the naked eye.
Experts introduce that a qualified LED bulb is equipped with a constant current chip inside, which can effectively reduce strobes, which is also the key to determining the quality of it. Generally, light bulbs with constant current chips will be relatively expensive.
Expert reminder:
When consumers buy LED lights,
can use mobile phone camera
quickly distinguish the quality of LED lights,
At the same time, you must not be greedy for cheapness,
Otherwise, you may buy inferior products!
Hurry to test
Whether your light bulb is qualified,
At the same time ZHUAN to family and friends,
to avoid more people being deceived!
Source: CCTV Finance, Internet
