Abstract
The field of spectral radiance factor (SRF) measurements
has seen growing interest in recent years. Scale
conformity has so far only been established between the
national metrology institutes (NMIs) of Germany and the
USA. This study aims at a bigger, multilateral scale
comparison. For this purpose, a total of six NMIs
participated in a scale comparison of
goniospectrophotometers based on neutral and colored
diffusely reflecting ceramics samples. In addition, two
universities, providing a home-built gonioreflectometer
and two widely used commercially available color
measurement instruments, respectively, were involved. The
wavelength range of the scale comparison covers the
visible wavelength range from 380 nm to 780 nm. Results
indicate systematic issues and that the uncertainty
evaluation of the NMIs requires further work; although
for the greatest part of the covered spectral range the
agreement is good.
| Original language | English |
|---|---|
| Pages (from-to) | 1996-2006 |
| Journal | Applied Optics |
| Volume | 56 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 1 Mar 2017 |
| MoE publication type | A1 Journal article-refereed |
Funding
This work has been realized within the European Metrology Research Program (EMRP) project JRP-IND52. The EMRP is jointly funded by the EMRP participating countries within EURAMET and the European Union. We thank the European Commission and EURAMET e.V. for financial support.
Keywords
- BRDF
- comparison
- spectral radiance factor