Understand stroboscope
Strobe, flashing with frequency, is called stroboscopic when the light changes rapidly and repeatedly with time, which gives people the direct feeling that the image is jumping and unstable.
The reason of stroboscopic is that traditional lamps are powered by alternating current, and their brightness changes with the periodic change of alternating current.
Any light bulb will flash, but to different degrees. Although the less stroboscopic, the better, but absolutely no stroboscopic is actually impossible, on the other hand, the high stroboscopic fluctuation of light bulbs will cause all kinds of harm to human body.
Brief analysis of stroboscopic hazard of LED lamp
How harmful is LED stroboscopic? CCTV 3. 15 party revealed that some lamps may have serious "stroboscopic" problems, and long-term exposure to led lighting stroboscopic environment will bring harm to people.
Mainly reflected in two aspects: human injury and safety injury.
Harm to human body: Long-term exposure of eyes to high-frequency flash environment will cause headache and eye fatigue, burn brain cells, damage visual cells, headache, fatigue, decreased vision, distraction and other problems, as well as nervous system problems such as photosensitive epilepsy.
Safety: just like optical illusion, including rotating machines, road lighting and car lights, it is easy to lead to the release of safety accidents.
Therefore, from the health point of view, it is very important to choose LED lighting that can prevent stroboscopic lighting.
How do you know if the LED strobe is serious or not?
Checking the LED strongpoint is actually very simple, only three steps are needed.
First: Take out your mobile phone and turn on the photo function.
Second: aim at the place where the desk lamp shines.
Third: check whether there is grid deletion in the lens picture. If there is grid deletion, there will be stroboscopic.
Transverse comparison of stroboscopic test of LED lamps
Take the comparison between bull and similar anti-stroboscopic products as an example:
The current fluctuation of bull's-eye LED lamp is less than that of the same industry, within 3%! (within 3%, it is considered that stroboscopic protection can be achieved, the requirements can be met, and the harm to human body is not too great. If it is more than 3%, the stroboscopic protection effect will not be achieved. Reading or studying under the environment of LED lamp with current fluctuation greater than 3% will make your eyes tired easily! )
The competing lamp is also an anti-stroboscopic product, and the current fluctuation is as follows:
The actual test shows that the frequency fluctuation values of different brands of LED lights are completely different. The higher the flicker fluctuation value, the more serious the harm to human body. The flashing problem of lamps exposed in CCTV 3. 15 party is real. Then, when buying lamps, how can we buy lamps that are really anti-stroboscopic? Bian Xiao suggested that you can choose big brands of lamps. After years of market testing, the products of big brands are of excellent quality and can be purchased with confidence. For example, in the experiment, the stroboscopic fluctuation of the bull-like eye LED lamp approaches zero, so you can buy it with confidence.
How to choose strongpoint?
First: look at the outer packaging.
Check whether the product packaging is complete, whether the logo is neat, and whether the instructions are standardized and detailed; Some products don't even have the manufacturer's logo and the national certification related logo.
Second: Look at LED tubes.
High-quality manufacturers' lamps will not have uneven tube surface, and there is a slope between the interface and the spiral port, which is convenient for installation and prevents the installer from getting an electric shock. However, the interface of inferior LED lamps is round, which has potential safety hazards. Pull hard at the turnbuckle. If the joint is loose, it means there is something wrong with the quality.
Third: detect the temperature.
When the LED lamp is powered on for a few minutes, the LED temperature will generally rise slowly, and the temperature will be lower when touched by hand. If the temperature is too high, it will affect the life of LED lamps.
Fourth: interference test
Turn on the radio when the LED lamp is working and put it near the lamp. The lower the noise from the radio, the better the quality of the lamp.
Bian Xiao suggested:
Bull's eyes shine:
There are many product lines of bull's-eye LED lamps, including lamp stickers, lamp strips, ceiling lamps, reading lamps and downlights.
Technically, the bull-like eye LED lamp not only adopts anti-stroboscopic technology, but also increases the LED lamp beads that can practice natural spectrum jointly developed with Fudan University. The spectrum emitted by this lamp bead is more suitable for people's eyes and can reduce the impact of stroboscopic intensity on people's physiology, psychology and emotion.
Recommended products: bull's-eye LED light bar.
Recommended products: bull-like eyes LED downlight.