[Brightcolours]

Yes, but I don't see why Olympus couldn't use it in order to reduce the size of their lens, especially given the hefty price tag.

Apparently it takes a lot of time/knowledge to develop this technology. Canon more than a decade ago introduced it in a 400mm f4 (2001) lens and a 70-300mm lens (2004). It took Nikon till 2015 to introduce a lens with comparable technology.

 

So, in order for Olympus to use lenses like this, they have to invest a lot of money and time to develop the knowledge and manufacturing ability of such refractive optics.