International. The TENº binary code developed by the company eliminates differences in color vision between different lighting sources.
Osram OptoSemiconductors has applied recent advances in physiological research on color perception in the human eye to solve a scientific challenge of more than 85 years of history: why can the same light in different LED lighting sources, designed to be exactly the same, look different?
Thanks to the TENº binary code, the pioneer in lighting has managed to close the gap between the measurable color coordinates emitted by an LED light source, and the perception that the human eye has about them. The discrepancy between the perception and the actual measurement of color in different lighting sources is well known to scientists, who have studied it for decades. Regarding general lighting, this occurs when there are several white LED lighting sources in the same space, such as spotlights, wallwashers and projectors.
In 2015, the International Commission of Illumination (CIE 170-2:2015), published a new color space based on several years of study. In addition to the axiom found on the psychological meaning of color space, the most important advance is a 10º view of the observer. Osram has applied both discoveries to the general lighting market with significant success.
Alexander Wilm, Applications Manager at Osram OptoSemiconductors explained how color discrepancies appear in white light LED units: color coordinates in general illumination are measured with the CIE 1931 2º color space. It is also known that blue, green and red cells, which are responsible for the perception of color in our eyes, are equally distributed, and that the perception of color over the angle of vision is constant. Actually, this is not the case, since the pigment density varies significantly over the dimension of the field of view.
In addition, he added that, most of us have had this peculiar experience, which has a great impact on various markets, without realizing it. In applications made for museums and retail for example, color discrepancy is unacceptable, since it does not show a costume or object with the best possible light discrepancy. The world's most renowned artists also want their works to look as intended.
Osram has solved the problem by complementing the CIE 1931 2º xy color space with the CIE 2015 10º u'v'. By assessing color uniformity under real conditions not only in a 2nd field of view, but also with a significant increase of 10º, binary measurement and coding provide a much more detailed assessment of color discrepancies. Tenº binary coding has been implemented in the new Soleriq S13 LED, achieving an unprecedented color discrepancy in LED lighting.
