What are the hazards of LED strobe?

LED lighting is widely used in various fields, no matter at home, factory or shop, we can see many LED lighting products everywhere, let us feel the benefits brought by LED lighting.
However, when we use some LED lighting lamps in our daily life, we are actually in a not very safe environment. The stroboscopic of LED lamps can damage our vision invisibly. However, when we use LED lighting fixtures, we do not get the attention and correct understanding. At present, the very popular LED lighting fixture in the market is no stroboscopic. Whether you are in a physical store or in a manufacturing factory or online shop, can you really achieve no stroboscopic without reducing the product performance?

The harm of stroboscopic effect of electro-optical source
(1) Cause industrial accidents
When the stroboscopic frequency of the electro-optic source is in integral multiple relationship with the speed of the moving object, the moving state of the moving object will produce the false vision of static, reverse, slow moving speed, and periodic repetition of the above three states, resulting in industrial accidents.
(2) Resulting in inefficient production
Stroboscopic effect can lead to visual nerve fatigue and migraine. Especially high pressure mercury (sodium) lamp and metal halide lamp which have been widely used in machinery industry. T8 (26mm) straight tube fluorescent lamp driven by inductor ballast is widely used in light industry, food, printing, electronics, textile and other industries. The harm of stroboscopic effect seriously results in low production efficiency.
(3) Hurting teenagers' eyes
After 1980s, T8 (26mm) fluorescent lamp driven by inductor ballast was widely used in families, schools and libraries. Because of the serious harm of stroboscopic effect in lighting environment, the growing primary and secondary school students suffered a lot, their eyesight decreased significantly, and myopia increased significantly.
Stroboscopic and stroboscopic effect of electric light source
Stroboscopic effect and stroboscopic effect are two mutual causal physical quantities aiming at the fluctuation depth of electric light source, luminous flux and the resulting harmful effect (called stroboscopic effect). Stroboscopic light refers to the depth of fluctuation of luminous flux of electric light source. The greater the fluctuation depth of luminous flux, the more serious the stroboscopic. The fluctuation depth of the luminous flux of the electric light source is directly related to the technical quality of the electric light source.
The fluctuation depth of luminous flux of electric light source is usually described by percentage. At present, T8 (26mm) straight tube fluorescent lamp, high-pressure mercury lamp, high-pressure sodium lamp and metal halide lamp, which are driven by inductor ballast, have been widely used in electro-optical sources. The fluctuation depth of luminous flux is as high as 55% - 65%. However, some energy-saving lamps with poor technical quality still have a stroboscopic depth of 20% - 30%.
Stroboscopic effect refers to the harmful effect of electric light source caused by the fluctuation of luminous flux, that is, the harmful effect of stroboscopic. The more serious the stroboscopic effect is, the more serious the harm of stroboscopic effect is.

In order to identify and evaluate the stroboscopic and stroboscopic effects of energy-saving lamps, a special gyro for stroboscopic detection is usually used. The identification and evaluation of stroboscopic and stroboscopic effects of energy-saving lamps are based on sunlight. The luminous flux of sunlight is smooth and stable, without the harm of stroboscopic and stroboscopic effect. The smoothness and stability of the luminous flux of the energy-saving lamp, the closer to the sunlight, the smaller the stroboscopic depth of the energy-saving lamp, and the smaller the harm of stroboscopic effect.
The fundamental technical measures to eliminate the stroboscopic and stroboscopic effects of LED lights
The fundamental technical countermeasure to eliminate the stroboscopic and stroboscopic effect of the light source is to increase the driving electric power frequency of the driving electric light source to more than 40KHz. Compared with energy-saving lamps, the technical measures to eliminate stroboscopic and stroboscopic effects are to increase the frequency of electronic ballast and AC-DC-AC converter. Scientific calculation and practical application verification: when the conversion frequency of electronic ballast AC-DC-AC (AC-DC-AC) reaches more than 40 kilocycles (kHz) (40 kilocycles are also specified in CE certification). The stroboscopic depth of the energy-saving lamp can be limited to less than 5%. The luminous flux of energy-saving lamp will form a flat and stable effect in human vision, and no longer produce the harm of stroboscopic effect.
Method and evaluation of distinguishing no stroboscopic
First, select a plane under the sun light, and rotate the special detection gyro on the plane. The pattern on the special detection gyro is a multi-channel black-and-white halo. In the whole process of rotation, the pattern on the top does not change with the speed of rotation, but is stable and fixed. This kind of black-and-white, stable and fixed halo pattern and color phenomenon shows that there is no harm of stroboscopic and stroboscopic effect in sunlight.
2. Select a plane in the room, hang a high-pressure mercury lamp and several energy-saving lamps of different manufacturers vertically above, and number the energy-saving lamps. For high pressure mercury lamp and many energy-saving lamps of different brands, independent switch control is implemented.
3. Turn on the high-pressure mercury lamp, and put the special detection gyro under the high-pressure mercury lamp to rotate. Special detection gyro will produce multi-channel rings with different colors, and each ring will show random changes of rotation direction, rotation speed and color with the change of gyro rotation speed. This phenomenon shows that the stroboscopic effect of high pressure mercury lamp is very serious.
4. Turn on the energy saving lamps and rotate the special detection gyro respectively. Special detection gyro pattern, color, will produce the following changes.
A: If the special detection gyro only produces multi-channel black-and-white halo, and the black-and-white halo changes with the rotation speed of the gyro, its rotation direction, rotation speed and color change, and it is stable and fixed, which is similar to the effect under the sun light, indicating that this energy-saving lamp has no stroboscopic and stroboscopic effects.
B: If the special detection gyro produces multi-channel rings with different colors, and each ring will show random changes of rotation direction, rotation speed and color with the change of gyro rotation speed, only the color is lighter. It shows that this energy-saving lamp still produces stroboscopic and stroboscopic effects.
Among the energy-saving lamps that still produce stroboscopic and stroboscopic effects, those with relatively thick color do more harm. For energy saving lamps with relatively light color, stroboscopic and stroboscopic effects are less harmful.
Scientific and correct understanding of the harm of LED stroboscopic and stroboscopic effect is of great practical significance for the scientific promotion and application of LED lights and the construction of a bright, clear and comfortable lighting environment.