What is strobe and what is the harm to human body?
The concept of healthy lighting is becoming more and more popular, but many people still have misunderstandings about the problem of LED stroboscopic. Today, follow the LED educational lamp manufacturers to understand what is stroboscopic and is it harmful to the human body?
What is strobe?
Because traditional lamps are powered by alternating current, their brightness changes with the periodic change of alternating current. Lamp stroboscopic is formed by the change of light and shade, and is usually divided into two types: one is the frequency of change below 100Hz, and the stroboscopic can be captured by the human eye; the other is the frequency of change above 100Hz , this stroboscopic will not be seen by people, but it has actually caused harm to the human body. The stroboscopic discussed below refers to invisible stroboscopic.
What damage does strobe cause?
1. May cause brain cell damage.
Some researchers say that by observing EEG, even if the stroboscopic light in the environment is too fast to be detected, the retina of the organism can still distinguish and respond to light with a frequency of 100-160Hz, or even as high as 200Hz. , In animal experiments represented by cats, 100-120Hz light has caused burns to its brain cells, and the burned cells belong to the lateral geniculate body tissue, which plays a role in controlling the eyeball.
2. May affect reading and vision
Studies have shown that the stroboscopic brightness of fluorescent lamps and CRT displays will affect the trajectory of people's eye movements when reading text. In addition, some health inspection reports have also found that visual impairment is caused by stroboscopic fluorescent lamps.
3. May induce migraine headaches
Experiments have found that a 100Hz fluorescent light flicker may cause a double the incidence of headaches in office workers. Of course, this effect is usually considered an exception and only occurs in a special population.
4. Reduce work efficiency and cause work-related injuries
In light industry, food, printing, electronics, textile and other industries, straight tube fluorescent lamps are widely used in lighting fields such as assembly lines, visual fatigue and migraine caused by stroboscopic flicker, which will cause problems such as positioning difficulties and low production efficiency; in machinery In the industry, such as crane operators, visual fatigue caused by stroboscopic flicker will cause positioning difficulties, operational errors, and even accidents; when the speed of the moving object and the stroboscopic frequency of the light source are multiples, the motion state of the moving object will be generated. Periodic repetition of wrong vision in three states, static, inverted, and slow moving, is likely to cause work-related accidents.
Due to the easy dimming of LEDs and the ability to integrate multiple chips in one lamp, it can achieve better color reproduction and reduce visual fatigue. Therefore, compared with traditional light sources, LEDs have more advantages in the control of stroboscopic hazards and color reproduction, and are also more energy-saving and environmentally friendly. Therefore, as long as the design is reasonable and scientific, LED lighting will be the best choice as an artificial light source for healthy lighting.
In the campus lighting system project, Mingyang Lighting adopts high-efficiency, energy-saving and high-quality LED light sources, with soft light, no blue light, high illumination, no glare, no stroboscopic, and no glare. In addition, the classroom lighting design comprehensively considers the viewing angles of students and teachers, tries to avoid reflections on the blackboard, and at the same time ensures uniform illumination on the desktop.
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