Sign up for NPL updates
Sign up for NPL updates

Receive regular emails from NPL to get a glimpse of our activities and see how our experts are informing and influencing scientific debate

Optical measurement

Spectral emission properties

Calibration services in  the ultraviolet, visible and near-infrared (UV-vis-NIR) range

We offer calibration services for spectral radiance and irradiance characteristics of lamps, luminaires and integrating sphere sources over the spectral range 250 nm to 2500 nm. Measurements are traceable to the NPL Spectral Radiance and Irradiance Primary Standard (SRIPS) facility, which uses an ultra-high-temperature blackbody radiator as the reference. The blackbody is directly linked to NPL’s cryogenic radiometer, enabling uncertainties at state-of-the-art levels to be achieved. 

The SRIPS facility can be used directly for the calibration of lamps and integrating sphere sources for customers. In addition, we provide calibration services for the radiance or irradiance responsivity of array spectrometers and other instruments, using our own lamps and sphere sources which are calibrated against the blackbody. Our extensive experience in this area means we are well-placed to advise customers on the optimum calibration approach, so please contact us to discuss your specific requirements.

Don’t see what you are looking for? Our diverse skill set enables us to provide bespoke solutions. Please contact us to discuss your requirements.

Contact us

Work with us

Our research and measurement solutions support innovation and product development. We work with companies to deliver business advantage and commercial success.
Contact our Customer Services team on +44 20 8943 7070