Long-term research abroad shows that long-term exposure to blue light will cause eye spot diseases, so the concept of preventing blue light is put forward. However, there is no exact data on how much and how long blue light will cause harm, so there should be no excessive "blue light panic", but it is necessary to prevent blue light. After all, it is really harmful to the eyes, and prevention is greater than treatment.
In recent years, various anti-blue products have appeared in the market, such as anti-blue glasses and anti-blue mobile phone film, but the relevant standards are not perfect.
Needless to say, the problem of blue light discoloration, but I think everyone wants to know whether the anti-blue light mobile phone film is useful. Here, Mr. An wants to tell you a cruel fact: the anti-Blu-ray mobile phone film is really useless.
Some people have tested some anti-blue toughened films on the market. In this way, these films have little filtering effect on blue light, which is similar to those without blue light protection function.
Matters needing attention
1, high transmittance is a fool.
Many films say "light transmittance of 99%", but the optical glass with the highest light transmittance is only 97%, and the mobile phone film can't reach such high light transmittance at all. If merchants use this as a gimmick to sell high prices, try not to buy it. ...
2. Don't use luminous/fluorescent film.
This luminous film is made by adding fluorescent powder to ordinary film. After long-term use, fluorescent powder is easy to be inhaled into the human body, which will cause certain harm to the skin. ...
3. Try not to buy matte film.
Some merchants claim that matte film feels good, but the difference between this film and other films is not as great as that, and it will affect the screen definition.