Ultraviolet light is a general term for radiation in the electromagnetic spectrum with wavelengths ranging from 0.40 to 0.01 microns, which cannot cause people to see. According to the different biological effects, UV light is divided into four wavelengths: UVA, UVB, UVC, UVD.
1, UVA band, wavelength 320 ~ 420nm, also known as long-wave black spot effect UV. It has a strong penetrating power and can penetrate most transparent glass and plastic. More than 98% of the long-wave ultraviolet contained in sunlight can penetrate the ozone layer and clouds to reach the earth’s surface, UVA can directly reach the dermis layer of the skin, destroying elastic fibers and collagen fibers and tanning our skin. 360nm wavelength UVA ultraviolet meets the phototropic response curve of insects and can be used to make insect trapping lamps. 300-420nm wavelength UVA ultraviolet can penetrate through the completely cut off Visible light of the special coloring glass lamp, only radiation to 365nm as the center of the near-ultraviolet light, can be used for ore identification, stage decoration, money inspection and other places.
2, UVB band, wavelength 275 ~ 320nm, also known as the medium-wave red spot effect UV .UVB has an erythematic effect on the human body and can promote the metabolism of minerals and the formation of vitamin D. However, long-term or excessive exposure will cause skin tanning and redness and peeling.
3, UVC band, wavelength 200 ~ 275nm, also known as short-wave sterilization of ultraviolet light. It has the weakest penetrating ability and cannot penetrate most of the transparent glass and plastic. The short-wave UV contained in sunlight is almost completely absorbed by the ozone layer. The common perception is that short-wave UV is very harmful to human beings and can burn the skin in a short period of time, while long-term or high-intensity exposure can also cause skin cancer. But with the development of new technology, authoritative research shows that: 222nm wavelength of far-ultraviolet radiation is not only harmless to human skin and eyes, more and more research shows that: 222nm wavelength for many pathogens are also effective, and this light does not pose a threat to the human body. UVC germicidal lamps emitted is UVC short-wave ultraviolet radiation.
At present, the UVC 222NM band has a good sterilization effect and is harmless to the human body. 222nm far uvc lamp safe wavelength and mercury-free. safe and effective.
Shenzhen Best Bright Electronic Technology Co., Ltd. (BBT) is a professional LED lamp and UV lamp manufacturer with ten years of industry experience, professional R&D, and after-sales team, providing OED and ODM and serving global customers. The 222nm UV Light developed by BBT is equipped with a filter, which effectively filters out harmful clutter, is safer in use, and has a stronger sterilization effect. It is widely used in homes, hotels, airports, theaters, gyms, hospitals, and other indoor places.
4、UVD band, wavelength 100-200nm, also known as vacuum UV. The penetration ability is extremely weak. It can oxidize the oxygen in the air into ozone, called ozone generation line. Oxygen (O2) in the air is irradiated by UV light and photolysis occurs to produce ozone (O3). Ozone is an effective oxidizer that kills bacteria and viruses in water or air, and can be used for disinfection of vegetable washing and air, etc.
As the new coronavirus is still affecting the world, it is very important to choose the right LED disinfection product, how should we choose the right disinfection equipment? Be sure to choose a product from a company with relevant qualifications and a qualified test report.