Four major hazards of strobe light in LED lighting
Date: 2016-10-06 10:25:37 Hits: 469

Four hazards: stroboscopic


1. induced photosensitive epilepsy or light


epilepsy: existing research data and industry experts pointed out that the existence of photosensitive epilepsy. Bittencourt and Fisher et al. Proposed photosensitive epilepsy popular theory in 2004 and 2005, Bittencourt pointed out that the photosensitive epilepsy is very low incidence in the whole population, the annual incidence rate of about 0.001%, among the incidence rate is about 0.006%, and epilepsy patients suffering from this disease probability is as high as 10%.


and Fisher by measuring the human body to light stimulation of unusual brain waves that photosensitive epilepsy at the age of 5 to 24 years old in the incidence rate of 0.01%&mdash about the crowd; 0.025%, when patients with epilepsy in 2% flashing light source under the stimulation of the probability that 14% symptoms of epilepsy induced by rapid. The Epilepsy Foundation of the United States points out that the major factors affecting the symptoms of photosensitive epilepsy include flicker frequency, light intensity, modulation depth, spectral components, and some factors related to the visual nervous system.


Bullough et al. The persistence of vision caused by


2. stroboscopic stroboscopic effect of a series of waveform and frequency of solid state light source, discovery driven modulation depth, frequency, duty ratio and waveform visibility of the stroboscopic effect influence. At the same time, industry experts also agreed that harm stroboscopic effect is mainly the visual artifacts will bring a series of problems, SafetyatWork said, although some light strobe eye recognition is not, but will make in the field of fast rotating machines appear slow or static variable visual illusion, this phenomenon is very dangerous. Vulnerable to accidents.



3. headache, migraine, nausea, visual disorders and other physical problems of the American Headache Society pointed out that many migraine patients are more sensitive to light, especially with glare, flashing bright light can cause migraine, and more serious than the high-frequency low-frequency flicker flicker; some flashing fluorescent lamp or television screen will cause similar symptoms of migraine. Many studies have shown that for these flashes evoked EEG responses in patients with migraine, they (EEG) usually is not the same with those without migraine. But the exact cause of the physical discomfort caused by those factors in the flashing light source has not been reached.


4. with eye fatigue, decreased visual acuity


lighting light flashes, tend to affect the working efficiency of the human. In the study found that the impact on people blink fatigue, mental fatigue caused by visible flicker are very small, and the main factors causing human fatigue is the content of the work; the non visible flicker can affect the trajectory of eyeball, effects of reading and eyesight. Studies by Wilkins and others have shown that visual task performance is better than low frequency light sources at higher frequency flashing light sources.



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