What is LED stroboscopic? What's the harm?

What is stroboscopic

Stroboscopic refers to the fluctuation of the luminous flux of an electric light source at a certain frequency. Pointing a mobile phone at a light source can often reveal a stripe distribution, which is caused by stroboscopic flashes. Some levels of stroboscopic activity are not noticeable and do not cause physical discomfort; But some stroboscopic things are a real problem.

As early as the 1990s, a large number of studies have found that light source stroboscopic lighting is closely related to neurological diseases such as migraine, headache, autism, visual fatigue and discomfort, and serious illusions can be caused by the human eye, leading to accidents. Do not underestimate the stroboscopic, different frequency and wave depth of the impact on people is not the same!

1. Stroboscopic stroboscopic effect, stroboscopic meaning,stroboscopic light,

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Human eye is a very complex system, individual differences are very large, for the vast majority of people, can detect the light flicker below 80Hz, when the human eye can perceive the change of light and dark, flicker frequency below 80Hz is also known as visible flicker (visible flicker). Visible stroboscopic is unacceptable for normal lighting or display.

2. Stroboscopic effect

For strobe above 80Hz, the human eye is not easy to detect, but it has a greater impact on the spatial perception of the human eye. For example, viewing moving objects as a series of still images is known as the Stroboscopic effect. Because of the stroboscopic effect, people can create the illusion that some fast-moving devices are running slowly or even stationary.

3. Phantom phenomena

Similarly, when the flashing frequency of the light source is 80Hz-2kHz, and the object in the environment remains static, the human eye is moving in the position or direction, the static light source will appear the extended light spot of the system, known as the phantom phenomenon, such as car taillights, or scanning the outdoor LED display.

4. The harm of stroboscopic

Stroboscopic light source has a close relationship with migraine, headache, autism, eye fatigue, blurred vision and other neurological diseases. Studies have shown that low-frequency scintillation light sources of 3-70Hz May cause photosensitive epilepsy for some people; For 100Hz flicker frequency is recognized to cause headache, migraine; For the 120Hz frequency flashing light source may affect people's emotions, boredom, anxiety and so on. The optical illusion caused by the stroboscopic effect in concert with the associated mechanical motion is very dangerous in industrial sites. Therefore, the accurate measurement and evaluation of the strobe characteristics of lighting products is directly related to people's health problems and needs to be solved urgently.