Intelligent Anti-Aging for LEDs. 21. August 2020 Photonic offers an anti-aging technology designed to stabilise the light output of LED light engines in the long term. Constant brightness throughout the entire product life cycle is a decisive quality characteristic for image processing systems. But image processing is not the only application where reliable lighting is important. ”For instance, if the intensity were to decline over time in the case of disinfection using UV light, one would have to increasingly extend the application time in order to generate the required dose of disinfecting UV radiation“, Photonic Business Developer Joachim Enengl explains. Such examples demonstrate how essential it is to maintain the light output at a constant level. To achieve that, Photonic has developed an anti-aging technology that gives LEDs an even greater competitive edge over other lighting systems. ”It is no secret that LED light engines not only result in lifelong cost savings, but also fare significantly better regarding light intensity. As a rule of thumb, the light output of a xenon lamp can be expected to decline to 60% or less within the first 150 hours. Standard LEDs, on the other hand, last seven times longer than xenon lamps and still deliver at least 10% more light“, Enengl adds. Thanks to its anti-aging technology, Photonic raises the bar even higher and attracts a lot of interest, not only among medical technology manufacturers. The light specialist resorts to two different methods. Where a constant light output is required but minor deviations play a less critical role, the LED current is continuously increased on the basis of a calculated aging curve. This approach is very cost-efficient and is applied, among others, in the latest product generation of Photonic‘s examination light, whose brightness can be manually adjusted by the user at any time. The second method regulates the LED current based on a reference signal provided by a photodiode and is particularly well-suited for image processing. ”In fluorescence diagnostics, for instance, where several wavelengths are involved, it is essential to keep the intensity of the different wavelengths constant in relation to each other. ”Thanks to our anti-aging technology, users have the additional certainty that their diagnosis is not distorted by fluctuations in light quality“, Enengl argues.