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Understanding ultraviolet LED applications

0 2018-12-25 14:57:28


Ultraviolet light occurs between the visible and x‐ray spectrums. The Ultraviolet wavelength range is specified as 10 nm to 400 nm; however, many optoelectronic companies also consider wavelengths as high as 430nm to be in the UV range. Ultraviolet light gets its name due to the “violet” color it produces in the visible portion of the spectrum although much of the output of UV light is not visible to the human eye.

UV LEDs have seen tremendous growth over the past several years. This is not only the result of technological advances in the manufacturing of solid state UV devices, but the ever increasing demand for environmentally friendly methods of producing UV light which is currently dominated by mercury lamps.

The current offering of UV LEDs in the optoelectronics market consists of product ranging from approximately 265nm — 420nm with a variety of package styles including through‐hole, surface mount and COB (Chip‐On‐Board). There are many unique applications for UV LED emitters; however, each is greatly dependent on wavelength and output power. In general, UV light for LEDs can be broken down into 3 general areas. These are classified as UV‐A, UV‐B and UV‐C. 

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