Articles

IEC embraces multi-junction PV devices

The IEC has added to its 60904 series a new standard, IEC 60904-8-1:2017, "Photovoltaic devices - Part 8-1: Measurement of spectral responsivity of multi-junction photovoltaic (PV) devices". This provides important information on...

Categories: Solar & Photovoltaics

Bye-bye CRI?

The CIE Colour Rendering Index (CRI) (CIE 13.3-1995) and the general colour rendering index, Ra, has for many years been the standard metric for the colour rendition performance of light sources, included in a wide array of...

Categories: General & Specialty Lighting, Consumer products & Textile

The IEC addresses characterisation of the blue light hazard

Researchers around the world have raised concerns about the safety of LED lighting on a regular basis, with focus ranging from the impact of blue light to issues such as disability glare. In a multipart series of articles that...

Introduction to IEC TR 62778 (LS16 Poster and Presentation)

Driven by the desire to circumvent issues encountered in applying IEC/EN 62471, and to reduce the measurement burden of luminaire manufacturers, a new approach to the evaluation of the photobiological safety of luminaires is now...

Photobiological Safety of Lamps - History and Overview of Standards

Whilst the potential hazards associated with optical radiation have been long understood, up until recently, consideration of this has been mainly limited to a number of specific applications using intrinsically harmful lamps,...

Categories: General & Specialty Lighting

FDA Guidance- Laser Illuminated Projectors

The FDA have in February 2015 published guidelines on the classification and requirements of Laser Illuminated projectors (LIPs). In such projectors, lasers are used as the light source in lieu of conventional lamps. LIPs may be...