“Killer” is hidden behind healthy lighting
“Killer” is hidden behind healthy lighting
With LED technology rising to the bottleneck, product quality has been mentioned, the industry is still talking about light flux and light effects two years ago, the concept of abnormal hot in recent years, lighting intelligent illumination healthy. We talk about healthy lighting, what kind of lighting is healthy? LED light, what factors will affect screen health to “killer”? This particular problem, we will be a representative product of health lighting lamps as an example, to explore what kind of light that is shared with everyone is a healthy light. “Killer” is hidden behind healthy lighting
Shortly after Nakamura Shuji won the Nobel Prize, the industry solved the question of the high content of blue light on LED products, which caused panic at one time. The human eye, as direct contact with light, is the most sensitive organ, while the table lamp is close to the human eye for a long time. The concept of an eye-protective desk lamp emerges over time. “Natural light is the healthiest,” said R & D director of Shenzhen Kang Feng Industrial Company. The main disadvantages of artificial light are blue light, glare, strobe, and others, and long-term use can threaten the health of the eyes visually. “Killer” is hidden behind healthy lighting
Danger of blue light
Blue is a kind of high energy that looks light, can directly penetrate the cornea and lens, direct the macula area, accelerate macular cell oxidation caused by chemical damage to the retina, retina damage to the child more seriously, Kang Mingsheng D responsible person. says its disadvantages are primarily manifested in the causes of myopia, cataract eye and macular pathology and body rhythms that endanger the disease, has been linked to medical research showing that in three aspects:
One is the loss of structure, the high light of blue LED lights can cause retinal pigment epithelial atrophy and even death, leading to decreased vision and even disappearance altogether, and this is a kind of irreversible damage, can also cause macular degeneration.
The other is eyestrain. Because the wavelength of the blue light is short, the focal point is not at the center of the retina, but near the retina. The ratio of LED light is too high, will let the user spend a long time in a state of tension, causing visual fatigue, can cause myopia, diplopia, easy to read serial symptoms, lack of attention and other symptoms.
Third, sleep is not good, blue light will inhibit melanin secretion, and melanin is an important hormone that affects sleep, the role known today is to promote sleep, adjust the time difference. Long hours of reading with high-lighted LED lights can cause deep sleep and even insomnia.
LED long contact lenses, especially the popularity of smart phones, users are mostly young students, if not in accordance with the physiological rhythm of light when people choose materials and quality, easy to let the user generate visual. fatigue, and can even cause irreparable eye damage. Research and development director Kang Mingsheng said LED desk lamps should try to control color temperatures at 4000K, to reduce the blue light content, and control the color rendering index closely. “Killer” is hidden behind healthy lighting
Strobe, the simplest definition refers to the period of light switching fluctuations. For example, in China, the current is passed through the 50Hz alternating current frequency, the power supply voltage of the lamp in the switching period in the form of a sine wave at the peak through the swing. Therefore, it can generate 2 times to supply flicker frequency, that is 100Hz. If no suitable electronic circuits, such as ballasts, drives or power, can produce a stroboscopic light source.
CCTV 315 this year, the LED light blinking about field exposure, causing great disturbance. Stroboscopic problems also can not be ignored, will cause various damage to the human body, biological and medical research has been attributed to it:
This can cause brain cell damage. According to the researchers, through the observation of EEG findings, even though the light strobe of the environment has quickly let people can not detect, the retinal organism can still tell the frequency of 100-160Hz, even up to 200Hz and respond to light.
May affect reading and sight. Strobe will affect eye movement in reading text, stroboscopic LED light will seriously affect the user’s attention, and more easily produce visual fatigue.
Fluctuations of the stroboscopic problem of the AC grid, so the LED’s eye light on the circuit design should be considered a flicker problem. “Killer” is hidden behind healthy lighting