It might interest you to know that the Super Multi Coating which is unique to Pentax was actually developed at OCLI in Santa Rosa. I remember four decades ago when they were offering to dissemble, coat, and reassemble cine lenses for the Hollywood filmmaking industry. Following that, they made a deal with Pentax to coat their lenses. The optical elements were shipped from Japan, coated in California, then reshipped back to the factory for lens assembly. Eventually, OCLI licensed Pentax to do the coating in house.
After that, every manufacturer came out with a multicoating process in an attempt to compete with Pentax. Since the beginning in the late 60s, however, no company has ever beat the OCLI/Pentax process for reducing flare. In 1999 OCLI merged and became a daughter company of JDS Uniphase.