Speaking of tempered film, I believe many people are familiar with it. It mainly refers to a specific toughened glass film with strong wear resistance, which can help us better protect the mobile phone screen, and has the characteristics of scratch resistance and no air bubbles. In the mobile phone film market, there is an anti-blue light tempered film. Is it really useful? Some friends may not be very familiar with the concept of blue light. What is blue light? What is the harm? If you want to buy blue light tempered film In the case of membranes, how do we identify them?
1. What is blue light? What is the harm?
The wavelength of visible light in nature is between 400 nanometers and 700 nanometers, and from 400 nanometers to 500 nanometers, the color that our human eyes perceive is blue, so we call this wavelength blue light. The blue light we are exposed to most in our daily life comes from all kinds of LCD screens, from mobile phones, tablets to computers to TV sets, all of which emit blue light from LEDs. It can easily pass through the lens of the eye to reach the retina, causing permanent damage to the retina of the eye. Long-term exposure to blue light (playing with mobile phones, computers, watching TV, etc.) will cause oxidation and disease in the macular area of the eye. , And cause great damage to the eyes, the chance of macular degeneration is doubled.
2. Is the anti-blue light tempered film really useful?
The real anti-blue light tempered film can block high-energy short-wave blue light (400nm~470nm band) harmful to the eyes, care for the eyes and protect eyesight. Anti-blue light tempered film, using thousand-layer nano-layer technology, combined with the principle of light refraction and reflection, developed by imported ultra-thin nano glass and top optical grade materials. It has good scratch resistance, anti-drop, anti-fingerprint, waterproof, Anti-radiation, anti-oil and other characteristics, while protecting the eyes, protect the safety of the mobile phone screen.
Third, how to identify the anti-blue light tempered film?
1. With a 90° field of view, looking directly at the phone screen, the anti-blue light tempered film presents a light blue and slightly purple light.
2. Tilt the field of view at 30° to the left and look directly at the screen of the mobile phone. The anti-blue light tempered film will appear colorless and transparent.
3. Tilt the field of view at 30° to the right and look directly at the screen of the mobile phone. The anti-blue light tempered film will still appear colorless and transparent.
In fact, for Blu-ray, the simplest understanding is that it will imply that we should not sleep yet. And our main sources of blue light exposure are mobile phones and computers. If we stay in blue light for a long time, it will cause great damage to our human body, especially the retina. Therefore, many mobile phone manufacturers have introduced anti-blue light tempered film. Although it can effectively reduce the damage of blue light to the eyes, the editor still recommends that you usually use the main mobile phone frequency, do not face the mobile phone screen for a long time, work and rest, use After a long time, go look at the green plants and let your eyes rest.
Post time: Aug-23-2021