The long-term serious damage caused by ultraviolet radiation to the human body is more and more recognized by people, and strengthening the defense against ultraviolet rays in the sun has also been paid attention to. With the widespread application of full UV protection window film, people are beginning to worry about whether the benefits of ultraviolet rays will also be shielded. The following is an explanation of the sterilization and disinfection effects of ultraviolet rays.
The thermal energy in the natural environment is mainly solar radiant energy, and 97% of its energy is distributed between 300nm and 2500nm wavelength. According to its wavelength, it can be divided into: ultraviolet band: wavelength between 0-380nm, which is characterized by strong penetration, which can deposit melanin in human skin and deepen its color. Excessive ultraviolet radiation can cause skin cancer, and can lead to carpets and curtains. , Fabric and furniture paint faded.
According to the ISO-DIS-21348 standard, ultraviolet rays can be divided into four bands in turn: UV-C band (wavelength 100nm～280nm), UV-B band (wavelength 280nm～315nm), UV-A band (wavelength 315nm～380nm) and In the UV-τmax band (wavelength 380nm～400nm), the impact of the four-band ultraviolet rays on the human body is mainly as follows:
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