The harm of anti-blue light tempered film

Now everyone has a mobile phone, so basically everyone will use a tempered glass screen protector. There are many types of tempered films on the Internet. However, the quality of many tempered films cannot be guaranteed. What has become popular online recently is the anti-blue light tempered film. The main function of the blue light tempered film is to protect the eyes. In fact, if you buy a fake tempered glass, the harm is very great.

Anti-blue light tempered film mainly blocks the high-energy short-wave blue light emitted by LCD/LED screens. Its principle is to absorb and refract excessive short-wave blue light in the screen, greatly reducing the stimulation of blue light to the eyes, effectively relieving dry eyes, red eyes, eye pain, and eye fatigue, thereby better protecting eyesight.

1. Before applying, pick up the anti-blue light tempered film and observe it from different angles. Some angles will reflect blue-purple light. 2. Place the anti-blue light tempered film on white A4 paper. You can see a slightly yellowish-green color through the tempered film.

3. After putting the anti-blue light tempered film on the phone, the screen clearly reflects blue-purple light when it is in black state.

4. After turning on the phone screen, the screen feels clearer than usual to the naked eye, and the light is softer.

The actual light transmittance of a brand new tempered glass film for mobile phones is only about 90%, and the light transmittance will decrease during long-term use. What’s more important is that the uniformity of light transmittance is different, which causes the display effect of the mobile phone to deteriorate and makes the eyes very tired.