Search Menu
Photonics Media Photonics Marketplace Photonics Spectra BioPhotonics Vision Spectra Photonics Showcase Photonics ProdSpec Photonics Handbook

LED System Simulates Sunlight Indoors

Facebook Twitter LinkedIn Email
COMO, Italy, April 28, 2014 — Reaping the benefits of sunlight without windows? It’s possible.

In a project funded by the European Commission Horizon 2020 program, CoeLux Srl has developed CoeLux, a new product that simulates sunlight indoors.

The system consists of LEDs that reproduce the sunlight spectrum, an optical system designed to recreate “a sensation of distance between the sky and the sun”, and nanostructures that recreate the Rayleigh scattering process that occurs in the atmosphere.

CoeLux has the capacity to bring the benefits of natural sunlight indoors. Courtesy of the European Commission.

“Many areas of our lives, from energy, transportation, medicine, food safety, health and well-being, are being enhanced and even revolutionized by nanotechnology,” said Michael Jennings, a spokesman for the European Research, Innovation and Science Commissioner Maria Geoghehan-Quinn. “CoeLux is a great example of how science can turn a simple idea that is difficult to achieve — replicating sunlight — into a reality.”

CoeLux creates the same atmospheric effects that produce the color variety that exists within transmitted sunlight, as well as the blue that exists under diffused sky light, developers said.

The new system can reproduce sunlight in morning, midday and sunset modes, and can replicate the light of Northern Europe, the Mediterranean and the tropics. It is compatible with low-energy-consumption fluorescent lamps and LEDs.

Scientists from the University of Insubria who developed the system said it was originally designed with a focus on the health care industry, but that it can be applied virtually anywhere, from apartments, industrial buildings and malls, to railway stations and enclosed stadiums.

The system could also benefit those working or living underground, or close to the Arctic or Antarctic where natural light is scarce several months out of the year, the scientists said.

“You can experience sunny skies anytime, anywhere,” said Paolo Di Trapani, a professor and physicist at the University of Insubria and coordinator of the CoeLux project.

CoeLux is the result of collaboration between CoeLux Srl, Next Limit Technologies and Ekspobalta, and research partners Griffin Software Srl, ETH Zurich, Bartenbach GmbH, Aldrans and Comonext Scpa.

For more information, visit:
Apr 2014
rayleigh scattering
Scattering by particles very small compared with the wavelength of the radiation being considered. A feature of Rayleigh scattering is that the scattered flux is inversely proportional to the fourth power of the wavelength. Thus in the visible region, blue light is scattered more strongly by the molecules of the air than longer wavelengths, accounting for the blue color of the sky.
7th Framework programConsumerETH ZurichEUEuropeEuropean CommissionindustrialItalylight sourcesnanostructured materialsopticsRayleigh scatteringResearch & Technologysunlight6th Framework ProgramCoeLux SrlCoeLuxResearch Innovation and ScienceUniversity of InsubriaNext Limit TechnologiesEkspobaltaGriffin Software SrlBartenbach GmbHAldransComonext ScpaLEDs

back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2023 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA, [email protected]

Photonics Media, Laurin Publishing
x We deliver – right to your inbox. Subscribe FREE to our newsletters.
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.