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.
The discovery of UV radiation was associated with the observation that silver salts were 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.
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.
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).
|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.|