Due to the fast reference speed, LED lamps do not have the thermal inertia and afterglow effects of traditional lamps, and are deeply affected by the uncertainty of the current. The uncertainty of the current directly affects the output of the luminous flux. The flare of the light source is the external manifestation of the change of the luminous flux, that is, The so-called strobe problem.
Regarding LED stroboscopic, the simple definition is that the light is not constant during the switching cycle. For example, in the United States, the current is transmitted by alternating current with a frequency of 60Hz, and the supply voltage of the lamp is a sine wave from peak to valley during the switching period. The form is not solid, so a strobe pulse at twice the mains frequency, i.e. 120Hz, may occur, assuming there is no suitable electronic circuit such as a ballast, driver or power supply, the LED light source will flicker.
Stadium light manufacturer: LED sports lighting is healthy if it does not flash!
The problem of frequent flashing of LED sports lighting should not be underestimated. It is harmful to people's understanding. Now there are relevant biological and medical researches:
It may cause brain cell damage. Some researchers said that by querying the EEG, they found that even if the stroboscopic light in the environment is too fast to be detected, the retina of the organism can still distinguish the frequency of 100-160Hz or even as high as 200Hz. In animal experiments represented by cats, light with a frequency of 100-120Hz has caused the burning of brain cells. The burning cells belong to the lateral geniculate body tissue and play a role in controlling the eyeball.
May affect reading and vision. Studies have shown that the frequency of fluorescent lamps and CRT monitors can affect people's eye movements when reading text. In addition, in some health check statements, the frequency of fluorescent lamps has also been found to damage eyesight.
Migraine may be triggered, and studies have found that strobe fluorescent lights at a frequency of 100 Hz may double the incidence of headaches in office workers. Of course, this effect is usually considered an exception and only occurs in special populations.
Some level of strobe is not noticeable and no physical discomfort, but some strobes can have serious consequences. In some factories, all lighting equipment is replaced by a low frequency flashing scheme, which improves the production line personnel. In terms of work efficiency, some household desk lamps on the market are also promoting low-frequency flashing products, indicating the importance of protecting eyesight; in other museums or exhibition venues, lighting products without water ripples under safety monitoring are also required to ensure strict and high security at all times monitoring.
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