On the use of anti-blue phone protection film What harm can be avoided?

1 What is UV? What does it do harm? Use anti-blue phone protection film products What are the advantages?

A: According to different wavelengths, UV can be divided into four kinds of UVC, UVB, UVA, U-VτMAX so on. UVτMAX a wavelength of 380 to 400 nanometers, which is part of the ultraviolet light has a strong penetrating power, but also throughout the year (including cloudy, sunny, evening) are present. Prolonged exposure to UVτMAX exposure is an important factor in human and animal skin cancer, melanoma lead generation. Blu-ray film is anti-UV400, namely four kinds of UV absorption can all be filtered, but the vast majority of products on the market to meet this requirement, the easiest method is to use paper money identification light detection.

2 What is Blu-ray? How does it hurt the eyes?

A: Blu-ray is the wavelength of the electromagnetic wave in a relatively high energy between 380nm-500nm. LED screens and other artificial light sources to retain a lot of blue, which makes the screen light whiter, brighter. LED screen light does contain a lot of high-energy short-wave blue light.

Modern high-energy short-wave blue light is caused by a variety of human eye symptoms culprit. It can reach the retina through the lens, so that the retina to produce free radicals, these free radicals can cause the decline of the retinal pigment epithelial cells, epithelial cells may lead to the decline of light-sensitive cells lack the nutrient to cause visual impairment, and these injury is irreversible.
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update:2014/8/5, view:
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