Research and Development

The NASLI products are used in the research of the effect of full spectrum lighting, that has been launched in central Europe several years ago. The experience of our customers is an irreplaceable source of information and inspiration. We have been collecting and processing the experience of our customers since 2006.

The field of sources of light has changed rapidly in the last couple of years. New types of sources have emerged, traditional sources are pushed towards better and better parameters and as a result of the EC "bulb" directive, the situation on the market is changing as well. Luminaire design follows the light source change with a short delay.

The main stream in light sources is focused on efficiency nowadays. We at NASLI focus on quality of light. We study hundreds of articles from the research of light sources, luminaires and ballasts, but also from the are of how light works in physiology, anatomy and psychology.

We work with laboratories and manufacturers from several countries and continents. Our objective is to optimize the traditional light sources for colour quality, but also to develop new light sources and luminaires with colour rendering better than the market mainstream.

We have equipped our own laboratory for testing our own products and for development and evaluation. We can measure power spectral density and calculate Tc and Ra from the spectra measured. In this way, we can verify the colour quality of our own products or we can compare other manufacturers' products.

Holistic Lighting System (HLS®)

We consider the standards on luminaire compliance the legal minimum, and we believe these standards are too benevolent or ignorant of some issues. For this reason we have developed our own stringent system for testing lighting products, which we call HLS.

Extended Electrical Safety (LVD+)

Stringent requirements on insulation, grounding, thermal allowance, mechanical stability and durability. Accurate design and selection of components.

Electromagnetic compatibility (EMC+)

Tighter limits for conducted and radiated noise. Use of selected components, proper layout and the use of additional filters.

Light and its quality (QLI+)

Extended methods for the evaluation of colour rendering quality. Besides the basic Ra and Tc we care about special rendering indices Ri and other qualities to establish their threshold values.

Nonvisual effects of light (NVE+)

Evaluation of light effects on the human nervous system. We introduced Circadian Index Ac to compare the effects of artificial light to D65 daylight.