So with that, I’ll turn it over to Bill Weissman. Thanks.
William F. Weissman
Thanks, Jed. Good afternoon, everyone. So Rubicon is the world’s leading provider of sapphire products as Jed mentioned. One of the main applications for Sapphire is in the LED market. It uses the substrates of choice in the LED market. But there are also a couple of other key markets we served, the SoS market and the optical market. And I’ll talk more about each one of those.
We are one of the really only fully vertically-integrated sapphire producers in the marketplace, meaning we produced very high grade large-diameter sapphire products from the very base materials of aluminum oxide powder and I’ll explain that a little bit more as well.
Our real strength is in our ability to produce these materials in very large diameters with very tight tolerances, which has enabled several leading industries, the SoS market is one application, which I’ll talk about, which is growing rapidly right now and which has really start out at large-diameter wafers and we’re also helping the LED market progress to larger and larger diameter wafers, which is helping that market kind of lower cost and address the strong demand.
The LED market is the biggest market by far. It is historically been got 80% of our revenue stream, we’re a little less from that right now, but clearly the biggest user of sapphire. The SoS market, which I’ll talk about more, is really the fastest growing segment, we started serving right now and the optical market is our third major market.
Within the LED market, I think everybody is familiar with the main applications, historically, it’s been mostly display, backlighting, signage and that’s been driving the growth for the past couple of years. Of course the Holy Grail in industry is general lighting.