Over the past decade, LED technology has experienced significant advancements, and as a result, LED lighting has been increasingly adopted.
In order to determine a good luminous environment when employing LED lighting, it is suggested that the Gamut Area Index (GAI) be used as a measurement.
In principle, GAI is usually calculated from the area of the polygon defined by the chromaticity of the eight colour swatches used in CRI definition for a light source (R1~ R8), the same reference samples used to calculate colour rendering index (CRI) in CIE 1976 colour space when illuminated by a given light source.
In the past, people had to take an expensive spectroradiometer for spectral measurements and a computer installed with data-analyzing software to get accurate TLCI values. Now, you have a much more convenient and smart choice: the world’s first handheld and SMART spectrometer, “Lighting Passport” and the SMART APP “Spectrum Genius" series.
The area of the polygon created by this plot is that source’s GAI, so the larger the area, the higher the GAI. High GAI is characteristic of a source with good colour discrimination and saturation of colours, or vividness. GAI can be over 100, but this usually means colours appear over-saturated. Generally, architects, lighting specialists, industrial designers, and theatrical lighting designers recommend choosing a source with a high CRI (85 or greater) and a high GAI (80-100).
Through the creation of the cutting-edge SMART spectrometer “Lighting Passport” and the professional “Spectrum Genius Mobile (SGM)” or “Spectrum Genius Essence (SGE)”, your smart device will provide complete light source measurement information anytime, anywhere, Asensetek allowing users to work at the forefront of industry.