In November 2015, Osram Opto Semiconductors (Osram Opto) announced general lighting will be an integral part of its long term strategic development plan, and that it would be investing EUR 1 billion (US$1.14 billion) in Malaysia to construct a 6-inch LED production site. The news surprised the entire LED industry. Recently, Osram Opto hosted a series of innovative SSL technology forums to unveil its new product line across Asia.

When discussing the properties of LEDs, the word ‘color’ immediately comes to our minds; and there are so many facets to our perception of color! An important one is color consistency, which is really a blanket qualifier for a variety of phenomena. Today, I will discuss color consistency at the level of the LED component (i.e. the white emitter including an LED die and phosphors). Keep in mind, though, that this is only part of the story, and eventually the system-level behavior is what matters.