LED street light manufacturers also have to face their new problems. Perhaps in the shop windows, the new led lighting has been abandoned. With the rapid improvement in SSL, the listed time is critical. Although the actual design time is shorter, but to obtain the required certificate from the US takes a few months.
Design engineers to select those that may take several years manufactured LED must remain cautious. Because LED products use the same package, LED manufacturers can easily release a higher flux of lighting. With the rapid development of LED chips, LED packing technology keeps the pace. And the LED performance improvements will have an equally important role. LED manufactures are extremely clear, and subsequently extended the life cycle of their products. In addition, if possible, it will make new led lighting with the previous model and the same PCB.
The color quality is perhaps the most difficult problem. The industry has spent a lot of time and money in the color variability of measurement and control. For manufacturers, chroma storage, like OSRAM ANSI, spend more and more. But the color temperature and compact chroma isn’t the all problems, because with the same chromaticity coordinates of light source may have different optical wavelength. If the spectral differences, the two different non-white surface will come into being.
Typically, the LED light has the same chromaticity coordinates, which is not a problem, because their spectra are very similar. That is to replace incandescent with an new led lighting. This is a potential problem. Because the great difference of the LED spectrum and incandescent spectrum.
Color efining index (CRI Color Rendering, the Index) is a measure of the closeness of the perceived color of a surface lighting with the same surface in a given lighting of color under incandescent indicators. CRI of 100 is a perfect match. While CRI of 80 is good, but the more discriminatory consumer may not think so.
OSRAM introduced by the increase red LED products Brilliant,Mix in the green – white LED. When the red with green-white mixed, it will produce white spectrum incandescent spectrum to match more white spectrum. Especially in the end of the red LED. Because usually here the conventional white LED bulbs color will drop. The result is a higher efficiency of lighting and refined color index.