It must be less than 45 unique views and they smear between them.
http://graphics.stanford.edu/projects/lightfield/leslie-hold...
http://real-eyes.eu/wp-content/uploads/2015/05/Technologie_0...
I guess in their case the microlenses aren't even round, since 45 is 5*9. I guess they have 9 horizontal X 5 vertical pixels per microlens.