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Does UVC Light kill virus?

Release time:2020/4/7 15:11:50

What's UVC Light?

UV light covers a wavelength spectrum from 100 to 380 nm and is subdivided into three regions by wavelength: UVA (320 to 400 nm), UVB (280 to 320 nm), and UVC (200 to 280 nm) (1). Among them, UVC has the strongest germicidal effect and is widely used in the form of mercury lamps to inactivate microorganisms.

Why is UVC used in lamps? 

Actually artificially-produced UVC has been used successfully as a germicide and bactericide for decades. It can kill or disable the growth of micro-organisms like bacteria, viruses and other pathogens, and it provides a chemical-free alternative to other disinfection methods, like using chlorine. Due to its effectiveness and advantages, UVC is being used for an increasing range of applications. It is used, for example, for disinfection in wastewater treatment plants, laboratories, air-conditioning systems and even pools and aquariums as well as in various stages of food and beverage industrial processes. UVC is also used in medical and hospital settings to sterilise instruments, work surfaces and the air. Usually, mercury-vapor lamps are used for generating germicidal UVC.  Technological advances have now made it has UVC light emitting diodes (LEDs) as well, which has led to an even larger number of applications, including in medical devices.

Does UVC Light hurt our skin? 

UVC radiation refers to wavelengths shorter than 280 nm. These wavelengths are entirely absorbed by our atmosphere and no natural UVC radiation reaches the surface of the earth. These wavelengths are available to us through artificial sources, such as UVC LEDs or mercury lamps. The intensity from point sources like UVC LEDs falls off as 1 over distance squared, and once it gets past the scattering length, it falls off exponentially. This means that 1) the further away the UVC source from a human, the lesser dose he is exposed to, and 2) the absorption length of UVC radiation in human skin is extremely short so that almost no UVC radiation can reach the living cells in the skin; all the absorption occurs in the dead cell layers.

In rare instances of prolonged direct exposure to UVC light, temporary eye and skin damage has been exhibited, such as cornea injury (sometimes referred to as “welder’s eye”) although this generally heals after a couple of days.


NEWSTAR LED UVC light comes with LED wavelength 270-280nm which is the strongest sterilization effect(only 10 seconds, sterilization up to 99.99%). In order to effectively avoid the eye hurts, we added flip-start device which makes sure that the light will not turn on when it's facing up. 

UVC LED deep ultraviolet sterilization technology is an efficient and safe physical sterilization technology. It uses deep ultraviolet light waves with a specific wavelength of 280nm to penetrate the virus shell and the cell walls of fungi, spores and microorganisms, directly destroying the DNA or RNA molecular structure of the cell and causing cell death Or can not reproduce, to achieve the purpose of physical sterilization.

At present, UVC-LED deep ultraviolet sterilization technology has developed into a safe, reliable, efficient and environmentally friendly sterilization technology.

Please visit following link for more details about NEWSTAR'S UVC Light.

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