The transmittance of the mobile phone film will affect the brightness of the phone and even hurt the eyes. The saying that "the danger of mobile phone foil is a big danger and it is a visual killer" has always been a concern. In various discussions, the transmittance of the film is considered to be the main cause of eye damage.
It is understood that none of the relevant national standards are related to mobile phone stickers. Ophthalmologists believe that the transmittance of cell phone film is generally not more than 90%, not to mention the laboratory optical glass transmittance is also 97%.
Professor He Guanghua of Chengdu Aidi Eye Hospital stated that if there is no problem with the quality of mobile phone film, it should not cause harm to the eyes. “Now some glasses will also have a film treatment to make the light softer.” Professor Ho said that currently there is no Exposure to patients with eye discomfort due solely to cell phone stickers. “But if the quality of the film is not good, the molecules will not be even, and the light will not be uniform. In the long term, the eyes will be fatigued.” The object has a attenuating effect on light, and the mobile phone film is no exception. After the light on the mobile phone screen is reduced, or Or less will affect the visual effect. The film will also have an impact on the resolution of the phone, such as reducing the screen resolution, resulting in lower resolution, and it will be more eye-pleasing for a long time. However, in general, the additional damage caused by the film to the eyes is not great, the biggest damage is the phone itself. Such as the mobile phone screen light flashes, the font is too small, blue light stimulation, eye muscles and other tension, so do not stare at the phone for a long time.
Mobile phone film knowledge
1. Do not buy with light transmittance above 97%
Many mobile phone packaging will be marked on the packaging, "light transmittance of 99%", but the experiment proved that this figure is to deceive consumers, because the highest light transmittance of optical glass transmittance is only 97%. If the film is marked with a light transmittance of over 97%, purchase it with caution.
2. Change the phone film often
Long-term use of mobile phone film more scratches, affecting the light transmission rate resulting in visual fatigue. It is recommended to replace the phone's film frequently to reduce eye fatigue.
3. Mobile phone foil re-stick
Mobile phones have bubbles that can easily cause visual fatigue.
4. It is best not to stick plastic film
The disadvantage of plastic film is easy to scratch, it is best not to use. Plastic film includes HD film, frosted film, mirror film, diamond film, etc., because the hardness is not easy to be scratched.
5. It is recommended to use tempered glass film
It is best to choose high-quality tempered glass film, because it is the same scratch resistance as the screen of the mobile phone, texture and light transmittance are closer, and the effect of anti-fingerprint and oil stain is better. In addition, due to its high hardness, even if the phone is dropped, it can also play a buffer role to prevent the phone screen from breaking.