Ultraviolet

Blue light alone does not have a whitening effect. The purpose of the blue light is to speed up the teeth whitening process. It should be used with a bleaching solution. The combination of chemical and blue light significantly increases the final whiteness level of the teeth.

Light measuring devices called lux meters can measure with high precision in a wide measuring range. But when it comes to LEDs things get a little more complicated. Different brands and models of lux meters may take different measurements at the same point.

With its investment in the California-based UV-C LED specialist Bolb Inc., Osram is further expanding its technological know-how of disinfection applications with UV-C light. The future cooperation between the two companies in the field of research will accelerate the industrialization of highly efficient and high-performance UV-C LEDs.

US-based commercial lighting manufacturer Regency Lighting has published a comprehensive guide with information about ultraviolet (UV) lights used for disinfection. The guide includes the efficiency of UV lights, dose requirements, advantages and disadvantages, product types and application examples.

The ambitions of the lighting industry to be a major supplier of UVC products was given a boost today as 239 scientists declared that airborne transmission of the coronavirus is much more significant than previously thought. The scientists suggest that emphasis should move from surfaces to indoor air as the...

UVC (Ultraviolet C) is an extremely effective technology in inactivating harmful microorganisms. UVC technology makes disinfection easy and inexpensive. However, there are some limitations in its use.

The irradiation of UVC on bacteria, viruses and other microorganisms will damage the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in the cells of microbial body. Thus lead to DNA chain break, nucleic acid and protein cross-link break, resulting in death of growth cell and regenerative cell...

With the current global pandemic on everyone’s minds, more attention is being paid to the role of many useful technologies that have been previously underutilized in controlling the spread of infectious disease. Among these technologies is germicidal UVC technology.

Currently, most deep-UV lamps are mercury-based. They pose a threat to the environment, and are bulky and inefficient. A Cornell research group led by Huili (Grace) Xing and Debdeep Jena, along with collaborators from the University of Notre Dame, has reported progress in creating a smaller, more earth-friendly alternative.