EMPIR project aided the development and publication of novel photometry standard

Power saving concept. Consumer changing compact-fluorescent (CFL) bulbs with new LED light bulb
Power saving concept. Consumer changing compact-fluorescent (CFL) bulbs with new LED light bulb

This standard will help product development and accurate energy efficiency categorisation of established solid-state lighting products

After the phase-out of incandescent light bulbs in 2012 in the European Union, photometry standards became outdated as well and contributed to less accurate measurements of solid-state lighting products, including white light-emitting diodes (LEDs). The EMPIR project Future photometry based on solid-state lighting products (15SIB07, PhotoLED) developed the new reference spectrum L41 based on white LEDs, which decreases the photometric measurement uncertainty of solid-state lighting products by a factor of two, compared to previous standards based on incandescent light source.

In collaboration with the International Commission on Illumination (CIE), this was published as part of the technical report CIE251:2023 LED reference spectrum for photometer calibration. This new technical report will help the development of new LED calibration standards as well as increase the measurement accuracy in classification of consumer lighting products according to their energy efficiency, thus increasing consumer trust.

The project coordinator Tuomas Poikonen (VTT MIKES) comments on the success of the project: 

‘We are delighted to see that the results of the project are taken into use by laboratories and standardisation. The new reference spectrum L41 is a significant achievement and provides a fresh alternative to the conventional CIE standard illuminant A that has been used for decades in calibrations of photometric instruments.’

Further details about the development and publication of the CIE251:2023 technical report can be found here.

This EMPIR project is co-funded by the European Union's Horizon 2020 research and innovation programme and the EMPIR Participating States.

Want to hear more about EURAMET?

Sign up for EURAMET newsletters and other information

Follow us on LinkedIn and Twitter

Select your area of interest
EMPIR project helps deliver new tool in the fight against cancer

FLASH radiotherapy is a new form of cancer treatment promising to minimise damage caused to healthy tissue but requiring metrology for its safe use more

EMPIR project develops new quantum standard along with guides for its use

EMPIR project develops new amplifier for quantum sensitive applications, helping to revolutionise science more

New European Metrology Network for Clean Energy established

A new European Metrology Network for Clean Energy will support collaboration within Europe concerning renewable energy sources more

EMPIR project defines new CIE measurand for visual appearance

The new definition supports traceable measurements needed to quantify the optical properties of different materials more

Page 1 of 222.