The CellBlaster™ is the world's first universal UV cell phone sanitizer!

What is Ultraviolet (UV) Light and what does it do?


Light is a form of electromagnetic energy that moves in measurable waves. The human eye is capable of seeing only a small segment of the spectrum known as visible light; shorter and longer wavelengths are not visible. Therefore, shorter length cosmic rays, gamma rays, X-rays and UV light and the longer length infrared and radio waves are all invisible to humans. To be specific, UV energy radiates between 180 nanometer (nm) to 400nm wavelengths in the narrow region between X-rays and just below the violet end of the visible light spectrum.

More than 3,000 natural and man-made substances can transform invisible radiated UV energy into longer, visible wavelengths that appear in a variety of colors. These substances react to UV because they are composed of easily excitable molecules. When UV light strikes one of these reactive substances, this energy, in the form of photons, causes each molecule to rotate violently. As the molecules slow down, they release this radiated energy in longer, now visible wavelengths that appear to the human eye as a glow in the color of the specific activated material. This phenomenon called fluorescence, is instantaneous and ceases the instant the UV light is removed. Fluorescence lets users detect otherwise invisible traces that indicate various quality defects, diseases and contamination.

Ultraviolet radiation has particular physical characteristics which affect such phenomena as: Luminescence and Phosphorescence and can cause Fluorescence. Short wave UV light is also widely used for sterilization.

Luminescence: the emission of light produced by means other than combustion such as the luminous glow of a watch dial.

Fluorescence: the emission of light produced by certain substances when excited by a UV energy source. This emission ceases when UV source is removed.

This is a characteristic, along with optical contrast and relief, that enables users to see contaminants, etc. with RestAssured lights.

Phosphorescence: the emission of light produced by certain substances when excited by a UV energy source which continues after the energy source is removed.

Black Light: lamp producing UV light in the range between 320-380 nm. This type of long wave light is commonly referred to as "Black Light."

Click Here to see How to Perform a UV Inspection



Short Wave Length
Range: 180-280 nm

UV-C has germicidal power. Eye and skin
protection is required.


Medium Wave Length
Range: 280-320 nm

UV-B is characterized by the ability to cause sunburn. Some eye and skin protection is advisable.


Long Wave Length
Range: 320-380 nm

UV-A waves are commonly called Black Light
or Wood's Light. Long waves can pigment the
skin but do not cause sunburn. Eye protection
is not required, but recommended.