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UVA VS UVB VS UVC Light

Views: 0     Author: Site Editor     Publish Time: 2021-08-18      Origin: Site

UV Light rerefers to ultraviolet light which cosists of UVA, UVB and UVC. You may have a question, what is the difference between UVA , UVB and UVC rays?



Different wavelength UVA VS UVB VS UVC

UVA: from 320nm to 400nm

UVB: from 290nm to 320nm

UVC: from 200nm to 280nm

Different wavelength of UVA UVB and UVC


UVA application,

UV curing lamps for  cure adhesives, coatings, inks, varnishes, decorative glazes and lacquers.

UV lamps also are used for tanning and backlighting.

Products UV LED strip, UV LED strip light


Different degrees of damage to the skin

While UVB radiation is widely recognized for its harmful effects on human skin and links to skin cancer, each of the UV bands (UVA, UVB and UVC) create different risks for humans. 

UVA is harmful to skin, UVB is risk to skin cancer, UVC can cause serious damage to skin, but we can not be touched by natural ultraviolet light, only by artificial ultraviolet light please see picture below:

UV to skin effects



Knowledge about UVC:

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 LED 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.


Acute (short-term) effects include redness or ulceration of the skin. At high levels of exposure, these burns can be serious. For chronic (long-term) exposures, there is also a cumulative risk, which depends on the amount of exposure during your lifetime. The long-term risk for large cumulative exposure includes premature aging of the skin and skin cancer.

UVC can damage the skin cell's DNA structure ,rendering them incapable of reproduction


ultraviolet light damages skin's DNA



With deep ultraviolet LED UVC technology development, now we have SMD3535 UVC LED chip that can supply this particular wavelength.

UVC LED Application such as water disinfection, air sterilizer , air purification, surface disinfection.

Mostly used for Active water or air, not static water nor air. 


UVC LED application:

Disinfection water, destroying harmful micro-organisms in other liquids, on surfaces, on food products and in 'air'.  

Products such as UVC LED strip, UVC LED rigid bar light, UVC LED lamp 



Regarding UVC LED chip:


UVC LED chip LG



UVC LED chip SMD3535






UV products from Suntech you may be interested in:

Please click on the images in the table below to view product details.


Image

Wave-

length(nm)

Radiant flux

Radiant flux

Dimension L*W*H(mm)

Germicidal UVC LED Bar Module

Germicidal UVC LED Bar Module

265-285nm

15-20mw

280*60mm

250nm 254nm 255nm UVC Disinfection LED Module

250nm 254nm 255nm UVC Disinfection LED Module

250-255nm

300mw/m

280*40mm

UVC Disinfection LED Module

 

UVC Disinfection LED Module

265-278nm

20mw

240*40mm

UVC LED Bulb 265nm 275nm Germicidal Light

UVC LED Bulb 265nm 275nm Germicidal Light

265-278nm

900/1350mw

135×200mm

Germicidal UVC LED Strip

Germicidal UVC LED Strip

265-278nm

90mw

/

High Power UVC LED Chip

High Power UVC LED Chip

270-280nm

380.87 mW

45*65mm

Deep UVC LED Chip Diode

Deep UVC LED Chip Diode

254nm 255nm

10mw ~ 15mw

36*36mm

Far UVC Led Chip Strip Light

207nm-220nm-222nm-Far-UVC-Led-Chip-Strip-Light-Inactivate-Bacteria-Without-Harm-Skin-400-400

207nm 220nm 222nm

2.5mw

65*45mm

Far UVC Led Light 

Far UVC Led Light

207nm

220nm

222nm

2.5mw

36*36mm

Far UVC 222nm LED Tube Light

 

Far UVC 222nm LED Tube Light

222nm

/

28*120mm


UVC articles you may be interested in:


Disinfection-&-Sterilization-Standards-of-UV-Products-Application

Disinfection & Sterilization Standards of UV Products Application

Frequently-Asked-Questions-About-UVC

Frequently Asked Questions About UVC

Top-10-Things-to-Know-Before-Buying-a-UV-Black-Light-LED-Strip

Top 10 Things to Know Before Buying a UV Black Light LED Strip

UVA-UVB-and-UVC-Radiation---Everything-You-Need-to-Know

UVA UVB and UVC Radiation - Everything You Need to Know

What-is-UV-C

What is UV-C

Knowledge-and-application-of-UVC-ultraviolet-rays


Knowledge and application of UVC ultraviolet rays

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