Features of protective film against blue light:
1, the blue light protection film is a product developed based on reducing the harm of blue light to people. Compared with the emerging screen protective film on the market, the blue light protective film has the functions of explosion-proof, fingerprint elimination, scratch prevention, sterilization and so on, and its most distinctive function is blue light blocking.
2. By absorbing and converting the blue light emitted by mobile phones, computers, televisions, LED lamps and other light sources, the blue light protection film can greatly reduce the irritation of blue light to the eyes and control the deepening of myopia; In addition to preventing myopia, the blue protective film can also absorb and convert ultraviolet rays, and prevent skin dryness caused by ultraviolet reflection from causing skin spots, chloasma and other problems.
Extended data
With the increasing search volume of keywords such as anti-blue light, the harm of blue light, anti-blue glasses and anti-blue film, and the increasing proportion of smart phones and tablet computers in people's lives, the public began to pay more and more attention to various eye health problems in the "third screen era". Although smart phones bring a lot of convenience to people's lives, the biggest harm caused by electronic products is the harm of blue light to our eyes.
Blue light is a kind of short wave radiation. The wavelength of visible light in nature is from 400 nm to 700 nm, and from 400 nm to 500 nm. The color that our human eyes feel is blue, so this band is called blue light. There will be a lot of blue light in the mobile phone, which can make the screen light whiter and brighter;
This high-energy blue light is close to the well-known ultraviolet light, which can penetrate the lens and reach the retina, causing retinal pigment epithelial cells to die, thus causing visual damage. And these injuries are irreversible. Harvard University research shows that if you use a mobile phone before going to bed, the high-energy blue light emitted by the screen is enough to stimulate the brain, making the brain in an excited state, causing insomnia symptoms such as falling asleep for too long and waking up many times during sleep.
In view of the potential hidden threat of blue light radiation, WHO like eyes Association also issued an orange warning, calling on the public to pay attention to prevent blue light in their daily lives.
How to choose anti-blue film: Anti-blue film is a kind of protective film, which has the function of blocking blue light. The most important technical parameter is the blocking rate of high-energy blue light, so as to reduce the stimulation of blue light on the screen to the eyes and achieve the effect of protecting the eyes and resisting eye fatigue. You can refer to the following aspects to buy anti-blue film:
1, blue light protection value; Formal and effective products, the blue light protection rate standard is greater than 99.9% ultraviolet protection, which can effectively filter and inhibit the high-energy blue light scattered by the screen and reduce the fatigue of eyes looking at the screen for a long time.
2. Thickness; The thicker the blue film, the better. General professional polarization manufacturers, such as AP brand blue light protection film, can achieve a film thickness of 0. 1mm under the premise of 99% blue light protection, which is no different from ordinary mobile phone protection film.
3. Material; Pay attention to whether the product details describe HD ultra-high definition technology, preferably optical grade PET material, with a light transmittance of over 90%.
4. Visual distortion; This is a standard that is often ignored. Anti-blue light film produced by professional polarizing manufacturers can reduce the color cast and color distortion rate, and it is not necessary to adjust the screen brightness after pasting.
5. Others; The surface is resistant to scratching and hardening, and it is not easy to scratch. High-tech nano-coating on the surface has good oleophobic function, fingerprints and oil stains can be wiped off, and the installation is convenient.
Baidu Encyclopedia-Anti-Blu-ray Mobile Phone Film
People's Network-It is urgent to prevent blue light. "Low-headed people" need to be vigilant