LED lighting quality programme

The main result of the project is the establishment of the LED Positive list, which is available on the home page, http://positivlisten.lednet.dk/. It is a new web-based tool for the dissemination of test results for LED lighting products. The tool allows you to search, sort and compare LED lighting products properties such as light quality and energy consumption. The tool is primarily aimed at professional users. The list includes a variety of LED lighting products to replace, respectively halogen spot light sources and incandescent bulbs and are based on test results for one or more units of each product. The results include testing of a large number of LED-based replacement lamps on the Danish market. These show that most of the products have a warm white color and a good color rendering that meets the requirements of the EU's Quality Charter. However, the energy efficiency of most of the products do not meet the legal requirements.

An included long-term test of 48 products, with over 11,000 hours of operating time of today, gives a good picture of how the light output of these LED lighting products falls and color properties are altered over time. These studies show large variations in the measured fall in light output from the fatal error of a few thousand hours of operation to slightly decrease by 5-10% than the 11,000 hours, which corresponds to the life time of around and over 30,000 hours.

A user testing of selected LED-based replacement lamps shows that skin color is assessed as being more natural with an increased R9 value. The balance between positive and negative evaluations were found to change with R9 values around 20 This was found for LED spots with a comparable color temperature (CCT) between 2909 K and 3056 K and Ra 80 ± 2 and varying R9 from 3 to 27 An important result of the project has been participating in international cooperation on requirements and test methods for LED lighting products, IEA SSL Annex, which to date has resulted in publications of a number of requirements specifications and a new comprehensive test method which work will continue in the coming years.