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Introduction of Pulsed Light Sterilization Technology

Mar. 12, 2020

Pulse light sterilization is a new type of cold sterilization technology that is safe (mercury-free), powerful and energy-saving.

As a new sterilization technology, broad-spectrum "white light" is often used to kill microorganisms on food and packaging.

The new method uses a powerful flash of bactericidal power, like sunlight, to extend the shelf life of food and kill microorganisms on packaging materials. This process was created by California's Pure Pulse Technology, Inc., and its commercial name is Pure Bright.

1.pulsed light technology

Pulsed strong light is produced by engineering process, which increases the force by many multiples. In an energy storage capacitor, the stored electricity is amplified over a relatively long period of time (fractions of a second) and the stored energy is released for a very short period of time (thousandths of a second or millionths of a millionth of a second) to perform its work.The result is an extremely high force (power) of the utility cycle and a consumption amount that is just not excessively average power consumption. For food and packaging applications, the stored energy pulse is an inert gas lamp that can produce intense flashes that last only a few hundred microseconds (one millionth of a second).

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Although the amplitude, duration, and intensity of the pulsed spectrum are extremely useful for processing food and packaging, the currently created pulsed light is focused on the wide-area spectrum. The "white" light flash contains wavelengths from 200nm in ultraviolet to about .1mm in near infrared. This spectral distribution resembles sunlight, with peak emission between 400 and 500 nm, but each pulse of light flash is about 20,000 times the intensity of ultraviolet wavelengths after the filtering effect of sunlight at sea level through the Earth's atmosphere. Because the length of the pulsed light is too long, small molecules cannot be ionized, but in the "non-ionized" part of the electromagnetic spectrum.


The optical energy density (Fiuenc) on the surface can be detected, or the incident light energy per unit area, that is, Joules per square centimeter (Joule; abbreviation J). 1Joule is less than 1/4 cal, so raising 1g water to 1°C requires more than 4 joules of energy.


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