Watching television hurt eyes? The main reason for analyzing the eyes of the screen

According to the white paper of National Vision Health, the number of nearsighted people in China is now close to 450 million, accounting for one-third of the total number of people in the country. Among them, the primary school’s myopic rate is as high as 46%, and young people aged 10-18 are the hardest hit areas ( The odds of nearsightedness among the junior, middle school, high school, and college students were 45.71%, 74.36%, 83.28%, and 86.36%, respectively. Without effective policy intervention, by 2020, the prevalence of myopia in China's population over 5 years of age will increase to around 51%, and the number of patients suffering from illness will reach 700 million. The problem of myopia among children and adolescents has become a hot issue in society.

The harm of blue light to the eyes In recent years, the rapid growth of myopia among young children and children and our dependence on the screen is inextricably linked. So why does the screen damage the eyes?

We currently use LCD screens whose lighting principle uses sunlight as an example. The light emitted by the sun is white by our naked eye and the sunlight is decomposed by prisms. We can see that the white light consists of red light, green light, and blue light. The composition of the LCD screen is similar to that of our LCD screen. Each pixel consists of three LCD cells. Each cell has a red, green, and blue filter in front of it. Light from different cell filters can show different colors on the screen.

Light is composed of spectra of different colors. Different wavelengths visually present different colors. For example, light with a wavelength of 600-700 nm, we see red light, 500-600 nm light, What we see is yellow light, which is light with a wavelength between 400-500 nanometers. Some manufacturers will increase the proportion of blue light in order to achieve the screen display effect, thereby achieving an increase in the color temperature and brightness of the screen display screen, but this also seriously damages the user's eye health.

Studies have shown that the shorter the wavelength, the higher the energy and the stronger the penetrating power. The blue light, because of its higher energy, can directly penetrate the lens of the human eye and reach the retina directly. When the retina is stimulated by high-energy blue light for a long time, the viability of the cells in the upper layer of the retina will drop or even cause death. This will lead to damage to the retina. Once the damage is increased, it will cause myopia, cataracts, macular degeneration and other diseases, especially the structure of the eye is not yet developed. For children and adolescents, injuries are even more serious.

How to prevent blue light?
Anti-Blu-ray methods currently available in the market are mainly based on anti-Blu-ray films, anti-Blu-ray glasses, software anti-Blu-ray, and replacement of light sources. However, the current Blu-ray anti-Blu-ray film, anti-Blu-ray glasses or anti-Blu-ray mode software, these are to intercept the blue light through external forces, according to the principle of material color, anti-Blu-ray film or anti-Blu-ray glasses, absorb the blue light emitted by the screen, so it appears The complementary color is yellow, and the software anti-blue light mode is based on the principle of RGB coloration, blocking blue light, only emitting red light and green light, and the red-green mixture shows yellow. This does not inherently reduce the production of harmful blue light. It can also cause distorted and yellowish images. Long-term viewing will not only fail to protect the eyes, but will increase the burden on the eyes.

So the display screen fundamentally prevents blue light, and the best solution is to start from the light source. At present, Blu-ray TV products currently on the market are only cool to solve the problem of Blu-ray from the root cause of light emission. Cool open has made many improvements from light source bead and LED chips. From the above, we can see that blue light is mainly concentrated in the 400-500nm wavelength range, in which 450nm peaks, and is also the strongest blue light band. Coolopen uses a translational blue wavelength method to translate the 450nm high-energy shortwave blue light to 460nm, which effectively slows down The blue light damages the retina to achieve anti-blue light, without affecting the normal color of blue light.

Xiao Bian through a professional anti-Blu-ray detector, cool open anti-Blu-ray TV and ordinary TV and computer monitors to do comparison, through the Blu-ray detector can be clearly found, compared to ordinary TVs and monitors, cool anti-Blu-ray TV almost invisible To harmful blue light and ordinary TVs and monitors, harmful blue light is very serious.