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UV LED Technology

What is UV LEDs?

Ultraviolet LEDs. Ultraviolet electromagnetic radiation, commonly known as UV, is currently employed in many industries and applications.

The emerging UV LEDs will be an enabling, competitive technology that drives new and innovative applications.

Visible LED market makes a giant leaf with expanding its application to BLU, lighting and automotive etc. With the UV LED power increasing(increment), the technology is also used in a wider range of applications.

Discovery of UV

The discovery of UV radiation was associated with the observation that silver salts was darkened when exposed to sunlight. In 1801, the German physicist Johann Wilhelm Ritter made the hallmark observation that invisible rays just beyond the violet end of the visible spectrum darkened silver chloride-soaked paper more quickly than violet light itself.

Origin of the term “UV”

The name means “beyond violet” (from Latin ultra, “beyond”), violet being the color of the shortest wavelengths of visible light. UV lights have shorter wavelengths than violet light.

Classification of UV

The electromagnetic spectrum of ultraviolet light can be subdivided in a number of ways. The draft ISO standard on determining solar irradiances(ISO-DIS-21348) describes the UVA(400~315nm), NUV(400~300nm), UVB(315~280nm), MUV(300~200nm) , UVC(280~100nm).

 

 

Nane

Wavelength (nm)

Application

Near UV

UV-A

315-400

UV Curing of polymers and Printer Inks, Blood Gas measurements, Nitrogen urea measurements, Bug zapper, Lighting, Optical Sensing and imaging of dyes, inks and markers and etc.

UV-B

280-315

UV curing, Phototherapy, Optical Sensing and imaging of dyes, inks and markers. Forensic Analysis, Protein analysis, DNA sequencing, Drug discovery and etc.

Deep UV

UV-C

100-280

Disinfection, Ozone Monitoring, Decontamination of surface and water Forensic Analysis, Protein analysis, DNA sequencing, Drug discovery, Optical sensing and Imaging of dyes, inks and markers and etc