How to organize a modern photometric laboratory Part 1 – selecting a goniometer system

Many manufacturers of lighting products use external measurement laboratories to verify compliance with standards and assess performance. Some manufacturers or importers rely solely on their suppliers' datasheets and try to avoid having to carry out measurements on their own. This situation is quite common not only among small start-ups but also larger lighting companies in [...]

Modern Lighting Audits. Technology supporting designers and contractors to verify lighting conditions

Available lighting design software tools support architects, engineers, and designers with the calculation and simulation of luminance levels and even correlated color temperature (CCT), but little is available for on-site verification tools. Nevertheless, verification can insure conformance for specific application requirements such as detailed task-work, food inspection, color critical viewing, warehouse isles, safety exit signs, [...]

A system solution for the assessment of photobiological safety of lamps and lamp systems

Optical radiation, including light from artificial sources, may cause so-called photobiological hazards to the eye and skin. This is a problem widely discussed in the lighting industry, which leads to many misunderstandings and doubts. These may result, on the one hand, from the fact that the assessment of these hazards requires specialist knowledge and experience, [...]

Light for colour evaluation in printing and graphic arts industries

Visual evaluation of colours in printing and graphic arts industries is of key importance for the process of colour management and verification of print quality. In order to properly assess colour, it is necessary to ensure proper lighting conditions, as described in ISO 3664:2009 standard. Despite the fact that almost 10 years have passed since [...]

White LED light sources – quality and colorimetric characteristics

Optical radiation in the visible range, primarily white light with correlated colour temperature ranging from 3000 to 6500 K, can be emitted by electroluminescence diodes available in different technologies. For this reasons LED modules, integrated LED lamps and LED luminaries differ with respect to the quantity and quality of emitted radiation. Reliable measurements and comparisons [...]

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